You searched for subject:(Sediment).
Showing records 1 – 30 of
2733 total matches.
◁ [1] [2] [3] [4] [5] … [92] ▶
University of Georgia
1.
Eason, James Louis.
Sediment and phorphorus changes in an impaired stream before and during a stream restoration project.
Degree: MS, Environmental Engineering, 2011, University of Georgia
URL: http://purl.galileo.usg.edu/uga_etd/eason_james_l_201112_ms 
► Water quality impairment of the nation’s streams has become a major topic of importance for both research and regulatory agencies over the past few decades.…
(more)
▼ Water quality impairment of the nation’s streams has become a major topic of importance for both research and regulatory agencies over the past few decades. This highlighted importance has led to research on stream restoration to improve water quality impairments. For this study, monitoring of a stream in Demorest, GA began 4 months prior to construction of a stream restoration project and continued throughout the construction phase of the project until vegetation was reestablished. Manual grab samples were analyzed for suspended
sediment and total phosphorus concentrations and results from pre-construction and construction time periods were compared. This study found that the construction activities added a significant amount of
sediment to the stream but these changes were not sustained for long periods of time. There were no significant changes seen in total phosphorus. In-situ, bedload, substrate and cross-sectional changes during construction are also discussed.
Advisors/Committee Members: Mark Risse.
Subjects/Keywords: Sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Eason, J. L. (2011). Sediment and phorphorus changes in an impaired stream before and during a stream restoration project. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/eason_james_l_201112_ms
Chicago Manual of Style (16th Edition):
Eason, James Louis. “Sediment and phorphorus changes in an impaired stream before and during a stream restoration project.” 2011. Masters Thesis, University of Georgia. Accessed October 22, 2018.
http://purl.galileo.usg.edu/uga_etd/eason_james_l_201112_ms.
MLA Handbook (7th Edition):
Eason, James Louis. “Sediment and phorphorus changes in an impaired stream before and during a stream restoration project.” 2011. Web. 22 Oct 2018.
Vancouver:
Eason JL. Sediment and phorphorus changes in an impaired stream before and during a stream restoration project. [Internet] [Masters thesis]. University of Georgia; 2011. [cited 2018 Oct 22].
Available from: http://purl.galileo.usg.edu/uga_etd/eason_james_l_201112_ms.
Council of Science Editors:
Eason JL. Sediment and phorphorus changes in an impaired stream before and during a stream restoration project. [Masters Thesis]. University of Georgia; 2011. Available from: http://purl.galileo.usg.edu/uga_etd/eason_james_l_201112_ms
University of Georgia
2.
White, William James.
Retention of sediment and phosphorus in forested streamside management zones of the Georgia Piedmont under simulated overland flow conditions.
Degree: MS, Forest Resources, 2003, University of Georgia
URL: http://purl.galileo.usg.edu/uga_etd/white_william_j_200308_ms
► To protect stream water quality, foresters have implemented Best Management Practices (BMPs) which include streamside management zones (SMZs) within which harvesting and site disturbance are…
(more)
▼ To protect stream water quality, foresters have implemented Best Management Practices (BMPs) which include streamside management zones (SMZs) within which harvesting and site disturbance are limited. Significant stream protection may be achieved by filtering of
sediment and phosphorus in forest litter layers and organic matter rich surface horizons. This project investigated the retention of
sediment and phosphorus in 5m (wide) x 10m (deep) plots to which simulated overland flow was applied from a tank and dispenser system. Plots were located on five slopes ranging from 2%-20% and either had an undisturbed forest floor or had the forest floor removed. Surface water samples were collected at 0, 2, 4, 6, and 10 meters within the SMZ during a 1-hour overland flow simulation.
Advisors/Committee Members: Lawrence A. Morris.
Subjects/Keywords: sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
White, W. J. (2003). Retention of sediment and phosphorus in forested streamside management zones of the Georgia Piedmont under simulated overland flow conditions. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/white_william_j_200308_ms
Chicago Manual of Style (16th Edition):
White, William James. “Retention of sediment and phosphorus in forested streamside management zones of the Georgia Piedmont under simulated overland flow conditions.” 2003. Masters Thesis, University of Georgia. Accessed October 22, 2018.
http://purl.galileo.usg.edu/uga_etd/white_william_j_200308_ms.
MLA Handbook (7th Edition):
White, William James. “Retention of sediment and phosphorus in forested streamside management zones of the Georgia Piedmont under simulated overland flow conditions.” 2003. Web. 22 Oct 2018.
Vancouver:
White WJ. Retention of sediment and phosphorus in forested streamside management zones of the Georgia Piedmont under simulated overland flow conditions. [Internet] [Masters thesis]. University of Georgia; 2003. [cited 2018 Oct 22].
Available from: http://purl.galileo.usg.edu/uga_etd/white_william_j_200308_ms.
Council of Science Editors:
White WJ. Retention of sediment and phosphorus in forested streamside management zones of the Georgia Piedmont under simulated overland flow conditions. [Masters Thesis]. University of Georgia; 2003. Available from: http://purl.galileo.usg.edu/uga_etd/white_william_j_200308_ms
University of Georgia
3.
Waller, Jordia Phillips.
Analysis of Georgia's regulation of NPDES storm water discharges associated with construction activities: policies and practices.
Degree: MS, Forest Resources, 2004, University of Georgia
URL: http://purl.galileo.usg.edu/uga_etd/waller_jordia_p_200408_ms
► Nonpoint-source (NPS) pollution is a major source of water quality impairment in Georgia's waters. With rapid development in Georgia, turbid storm-water discharges from construction sites…
(more)
▼ Nonpoint-source (NPS) pollution is a major source of water quality impairment in Georgia's waters. With rapid development in Georgia, turbid storm-water discharges from construction sites has become the leading cause of NPS pollution. From August 1, 2000, to the present the Georgia Environmental Protection Division (EPD) has accumulated turbidity data from storm-water discharges associated with land-disturbing activities at construction sites. A small sample of these data (20 sites) were used here to evaluate whether variations in turbidity can be explained by the type of disturbance (spatial vs. linear), magnitude of the disturbance area, the time of year, or the amount of precipitation. Recommendations were made to EPD on their current National Pollutant Discharge Elimination Systems (NPDES) permit based on these data plus an analysis of similar programs in three other Southeastern states.
Advisors/Committee Members: Todd Rasmussen.
Subjects/Keywords: Sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Waller, J. P. (2004). Analysis of Georgia's regulation of NPDES storm water discharges associated with construction activities: policies and practices. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/waller_jordia_p_200408_ms
Chicago Manual of Style (16th Edition):
Waller, Jordia Phillips. “Analysis of Georgia's regulation of NPDES storm water discharges associated with construction activities: policies and practices.” 2004. Masters Thesis, University of Georgia. Accessed October 22, 2018.
http://purl.galileo.usg.edu/uga_etd/waller_jordia_p_200408_ms.
MLA Handbook (7th Edition):
Waller, Jordia Phillips. “Analysis of Georgia's regulation of NPDES storm water discharges associated with construction activities: policies and practices.” 2004. Web. 22 Oct 2018.
Vancouver:
Waller JP. Analysis of Georgia's regulation of NPDES storm water discharges associated with construction activities: policies and practices. [Internet] [Masters thesis]. University of Georgia; 2004. [cited 2018 Oct 22].
Available from: http://purl.galileo.usg.edu/uga_etd/waller_jordia_p_200408_ms.
Council of Science Editors:
Waller JP. Analysis of Georgia's regulation of NPDES storm water discharges associated with construction activities: policies and practices. [Masters Thesis]. University of Georgia; 2004. Available from: http://purl.galileo.usg.edu/uga_etd/waller_jordia_p_200408_ms
University of Georgia
4.
Ssegane, Herbert.
Tools for remotely assessing riparian buffers protecting streams from sediment pollution.
Degree: MS, Biological Engineering, 2007, University of Georgia
URL: http://purl.galileo.usg.edu/uga_etd/ssegane_herbert_200708_ms
► The study evaluated tools for remotely assessing the impact of riparian buffers protecting streams from sediment pollution by integrating Google Earth Pro and USLE to…
(more)
▼ The study evaluated tools for remotely assessing the impact of riparian buffers protecting streams from
sediment pollution by integrating Google Earth Pro and USLE to predict site specific soil erosion and integrating GIS, remote sensing, and USLE to estimate erosion distribution within Nzoia basin (Kenya).
Sediment deposition along the buffer was estimated using USFS SDR. Paired t test comparison between GPS and Google Earth derived elevations showed difference between the elevations but within the GPS error margin. Ground truthing results from ten small watersheds yielded a mean absolute error of 0.76 tons ha yr with a coefficient of determination of 0.95. For
sediment deposition, USFS method overestimated the amount of
sediment deposited in riparian buffers. The integration of GIS, remote sensing, and USLE yielded a soil erosion distribution map for the Nzoia basin with most of the basin under slight erosion (0 5 tons ha yr) with some erosion hotspots. Therefore, Google Earth Pro, GIS, and remote sensing technologies can be integrated with erosion,
sediment yield, and nutrient transport prediction models to asses the effectiveness of riparian buffers.
Advisors/Committee Members: E. W. Tollner.
Subjects/Keywords: Sediment yield
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ssegane, H. (2007). Tools for remotely assessing riparian buffers protecting streams from sediment pollution. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/ssegane_herbert_200708_ms
Chicago Manual of Style (16th Edition):
Ssegane, Herbert. “Tools for remotely assessing riparian buffers protecting streams from sediment pollution.” 2007. Masters Thesis, University of Georgia. Accessed October 22, 2018.
http://purl.galileo.usg.edu/uga_etd/ssegane_herbert_200708_ms.
MLA Handbook (7th Edition):
Ssegane, Herbert. “Tools for remotely assessing riparian buffers protecting streams from sediment pollution.” 2007. Web. 22 Oct 2018.
Vancouver:
Ssegane H. Tools for remotely assessing riparian buffers protecting streams from sediment pollution. [Internet] [Masters thesis]. University of Georgia; 2007. [cited 2018 Oct 22].
Available from: http://purl.galileo.usg.edu/uga_etd/ssegane_herbert_200708_ms.
Council of Science Editors:
Ssegane H. Tools for remotely assessing riparian buffers protecting streams from sediment pollution. [Masters Thesis]. University of Georgia; 2007. Available from: http://purl.galileo.usg.edu/uga_etd/ssegane_herbert_200708_ms
NSYSU
5.
Li, Ji-yu.
Sand layer moved on slope bed and breaking wave characteristic of experimental study.
Degree: Master, Marine Environment and Engineering, 2008, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0725108-120229
► This experimental technique (doctoral dissertation rough draft) designs the construction by Liao, the affiliation observation sand bed section plane change situation seeks has been moving…
(more)
▼ This experimental technique (doctoral dissertation rough draft) designs the construction by Liao, the affiliation observation sand bed section plane change situation seeks has been moving
sediment, reference for nearshore drifted sand quantity appraisal.
A series of hydraulic model experiments in wave flume are used to investigate the relationships between sand bed section migration and wave condition. Lays down the uniform slope of 1/30 movable-bed in wave flume, and uses two kinds easily to differentiate the nature close sand particle constitution bottom bed. After the wave action, we can find the moved bed section and unmoved part by observed the situation which is mixed by the wave action. From the sand body section plane change situation understood the wave washes the deep degree to the bottom bed.
According to Liao (doctoral dissertation rough draft) parameter of the construction: The movable parameter with the breaking wave eddy current coefficient, with has separately moved the granulated substance quantity on its significance to compare.
Advisors/Committee Members: Yung-Fang Chiu (chair), Tai-wen Hsu (chair), I-fan Tsey (chair), Chung-pan Lee (committee member), Yang-ih Chen (chair).
Subjects/Keywords: sediment; breaker
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, J. (2008). Sand layer moved on slope bed and breaking wave characteristic of experimental study. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0725108-120229
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Li, Ji-yu. “Sand layer moved on slope bed and breaking wave characteristic of experimental study.” 2008. Thesis, NSYSU. Accessed October 22, 2018.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0725108-120229.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Li, Ji-yu. “Sand layer moved on slope bed and breaking wave characteristic of experimental study.” 2008. Web. 22 Oct 2018.
Vancouver:
Li J. Sand layer moved on slope bed and breaking wave characteristic of experimental study. [Internet] [Thesis]. NSYSU; 2008. [cited 2018 Oct 22].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0725108-120229.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Li J. Sand layer moved on slope bed and breaking wave characteristic of experimental study. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0725108-120229
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
6.
Schon, Samuel C.
Clues to Martian Paleoclimate: Ice Reservoirs, Sediment
Transport, and Depositional Environments.
Degree: PhD, Geological Sciences, 2012, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:297648/
► The history of Mars’ paleoclimate is explored using sedimentary records from both the Noachian and Amazonian periods. Sedimentary structures indicative of a progradational delta are…
(more)
▼ The history of Mars’ paleoclimate is explored using
sedimentary records from both the Noachian and Amazonian periods.
Sedimentary structures indicative of a progradational delta are
described in a Noachian-aged paleolake basin. Studies of gullies on
Mars and the development of a chronostratigraphic marker show that
gullies have been active in the recent geologic past. Ice-rich
latitude-dependent mantling deposits are a likely source of
meltwater for gully activity. These mantling deposits date from a
recent obliquity-controlled ice age, are younger at high latitudes,
and extend equatorially to approximately 30 degrees north and south
latitude.
Advisors/Committee Members: Head, James (Director), Russell, James (Director), Herbert, Timothy (Reader), Pieters, Carle (Reader), Marchant, David (Reader).
Subjects/Keywords: sediment deposition
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Schon, S. C. (2012). Clues to Martian Paleoclimate: Ice Reservoirs, Sediment
Transport, and Depositional Environments. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:297648/
Chicago Manual of Style (16th Edition):
Schon, Samuel C. “Clues to Martian Paleoclimate: Ice Reservoirs, Sediment
Transport, and Depositional Environments.” 2012. Doctoral Dissertation, Brown University. Accessed October 22, 2018.
https://repository.library.brown.edu/studio/item/bdr:297648/.
MLA Handbook (7th Edition):
Schon, Samuel C. “Clues to Martian Paleoclimate: Ice Reservoirs, Sediment
Transport, and Depositional Environments.” 2012. Web. 22 Oct 2018.
Vancouver:
Schon SC. Clues to Martian Paleoclimate: Ice Reservoirs, Sediment
Transport, and Depositional Environments. [Internet] [Doctoral dissertation]. Brown University; 2012. [cited 2018 Oct 22].
Available from: https://repository.library.brown.edu/studio/item/bdr:297648/.
Council of Science Editors:
Schon SC. Clues to Martian Paleoclimate: Ice Reservoirs, Sediment
Transport, and Depositional Environments. [Doctoral Dissertation]. Brown University; 2012. Available from: https://repository.library.brown.edu/studio/item/bdr:297648/
University of Waterloo
7.
Hufnagel, John.
Flume Construction and RFID Tracking Techniques for Fluvial Sediment Transport Studies.
Degree: 2016, University of Waterloo
URL: http://hdl.handle.net/10012/10952
► Sediment transport studies incorporating radio frequency identification (RFID) tracers are becoming a key component in understanding sediment transport dynamics due to the data they provide…
(more)
▼ Sediment transport studies incorporating radio frequency identification (RFID) tracers are becoming a key component in understanding sediment transport dynamics due to the data they provide on spatial and temporal variability. This technique involves inserting small glass cylindrical transponders into stones then seeding those stones in the river bed. Existing methods of using RFID tracers involve either manually sweeping the channel bed after a hydrologic event or placing a series of fixed antennas along the channel to detect when sediment containing a RFID tracer passes that point. The first method is limited because it does not correlate the hydrodynamic conditions with the movement of the sediment, while the second method is limited by spatial resolution afforded by the fixed antennas.
The goal of this research is to develop a flume with the capacity to accurately measure sediment inputs, transport, and export in real time. This is accomplished by automating the sediment supply, using a sediment trap with a light table to monitor sediment leaving the flume, and implementing an RFID sediment tracking system to provide real time tracking of the movement of individual clasts over the course of an experiment.
A tilting flume with sediment supply and capture systems was designed and built with an integrated RFID tracking system to enable sediment transport experiments to be conducted in the flume while continuously tracking the position of RFID tagged sediment. The RFID tracking system, located under the floor of the flume, consists of a carriage containing the antennas, tuners, multiplexing RFID readers, batteries, and rollers to enable the carriage to roll along the flanges of the beam supporting the flume. The carriage is transported back and forth the length of the flume using cogged belts and pulleys powered by a DC motor and controlled by a PLC with limit switches. The identification of RFID tags detected by the carriage is transmitted Bluetooth to a stationary computer that also receives carriage position information from a laser range finder.
Validation tests were conducted with vertically oriented RFID tags to establish the detection range and accuracy of estimating RFID tag positions. When no steel cross members were present, an RFID tag could be detected up to 21 cm above the flume floor with streamwise position estimation accurate within 1 cm. When steel cross members or multiple RFID tags were present, the detection range and position estimation accuracy decreased. Further refinement to this technique could be achieve by experimenting with different antenna designs which may provide a larger detection range and by using different type of PIT tags to enable tracking of smaller sized sediment. The developed flume and tracking system will allow us to obtain new and better information about sediment transport which should improve fundamental understanding and aid in the design of channel restoration projects.
Subjects/Keywords: Sediment Transport
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hufnagel, J. (2016). Flume Construction and RFID Tracking Techniques for Fluvial Sediment Transport Studies. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/10952
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Hufnagel, John. “Flume Construction and RFID Tracking Techniques for Fluvial Sediment Transport Studies.” 2016. Thesis, University of Waterloo. Accessed October 22, 2018.
http://hdl.handle.net/10012/10952.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hufnagel, John. “Flume Construction and RFID Tracking Techniques for Fluvial Sediment Transport Studies.” 2016. Web. 22 Oct 2018.
Vancouver:
Hufnagel J. Flume Construction and RFID Tracking Techniques for Fluvial Sediment Transport Studies. [Internet] [Thesis]. University of Waterloo; 2016. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/10012/10952.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hufnagel J. Flume Construction and RFID Tracking Techniques for Fluvial Sediment Transport Studies. [Thesis]. University of Waterloo; 2016. Available from: http://hdl.handle.net/10012/10952
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
8.
Liu, Cenwei Jr.
Spatial and temporal variation in size and shape of sediment particles in the Tobacco Creek Watershed.
Degree: Soil Science, 2015, University of Manitoba
URL: http://hdl.handle.net/1993/30239
► Particle size and shape are important characteristics of the sediment which affects the adsorption of sediment-associate contaminants and nutrients onto the surface of sediment. This…
(more)
▼ Particle size and shape are important characteristics of the
sediment which affects the adsorption of
sediment-associate contaminants and nutrients onto the surface of
sediment. This thesis characterized the spatial and temporal variation in size and shape of
sediment particles in the Tobacco Creek Watershed. A strong correlation between the particle size of suspended
sediment and stream discharge was observed. Spatial and temporal variation in size of suspended and channel bed
sediment showed that particle size was significantly coarser at the upper reaches and following the rainfall events, but finer at the lower reaches and following the snowmelt events. Image analysis of coarser particles showed that rock fragments are not becoming rounded in short distances, but they reduced in size. The coarser materials from bedrock outcrops can be sources of fine-sized particle during transport. These findings have important implications for understanding suspended
sediment dynamics transport in the study watershed.
Advisors/Committee Members: Lobb,David (Soil Science) (supervisor), Li, Sheng (Soil Science) Kuzyk, ZouZou (Geological Sciences) (examiningcommittee).
Subjects/Keywords: sediment
…107
APPENDICES
Appendix A: Sediment and water quality data during 1963-1977… …108
Appendix B: Particle size analysis of suspended sediment… …Creek Watershed......21
Figure 2.2 Particle size distribution of the suspended sediment… …Figure 2.4 Temporal variations in annual sediment load during 1963-1977 at IS1... 27
Figure… …2.5 Seasonal variation in log water discharge and log sediment load from 1967
to 1977…
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Liu, C. J. (2015). Spatial and temporal variation in size and shape of sediment particles in the Tobacco Creek Watershed. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/30239
Chicago Manual of Style (16th Edition):
Liu, Cenwei Jr. “Spatial and temporal variation in size and shape of sediment particles in the Tobacco Creek Watershed.” 2015. Masters Thesis, University of Manitoba. Accessed October 22, 2018.
http://hdl.handle.net/1993/30239.
MLA Handbook (7th Edition):
Liu, Cenwei Jr. “Spatial and temporal variation in size and shape of sediment particles in the Tobacco Creek Watershed.” 2015. Web. 22 Oct 2018.
Vancouver:
Liu CJ. Spatial and temporal variation in size and shape of sediment particles in the Tobacco Creek Watershed. [Internet] [Masters thesis]. University of Manitoba; 2015. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/1993/30239.
Council of Science Editors:
Liu CJ. Spatial and temporal variation in size and shape of sediment particles in the Tobacco Creek Watershed. [Masters Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/30239
University of Manitoba
9.
Kimiaghalam, Navid.
Investigating the effect of applied shear stress on cohesive riverbank erosion.
Degree: Civil Engineering, 2015, University of Manitoba
URL: http://hdl.handle.net/1993/31519
► Morphological changes along several channels have raised concerns in the Province of Manitoba. This thesis presents a comprehensive study of fluvial morphological processes in open…
(more)
▼ Morphological changes along several channels have raised concerns in the Province of Manitoba. This thesis presents a comprehensive study of fluvial morphological processes in open channels. Due to the recent concerns in the Province of Manitoba, the study mainly focused on the Red River in the city of Winnipeg, and two diversion channels in northern Manitoba. Morphodynamic conditions of these channels have become more complicated due to the cohesive nature of the channels bed and bank material and significant effects of subaerial processes. Several field measurement techniques, experimental setups, and numerical models were used to gain a better understanding of these complicated processes within the study reaches. Field measurements include soil sampling, water sampling, hydrometric surveys using an ADCP; the experimental setup includes several standard soil properties tests as well as an erosion measurement test; numerical modelling includes hydrodynamic and thermal modelling to quantify applied shear stress and seasonal freeze-thaw processes. Moreover, the effect of deposition processes on the final geomorphology of the study areas is discussed.
Advisors/Committee Members: Clark, Shawn (Civil Engineering) (supervisor), Biron, Pascale (Concordia University) Tachie, Mark (Mechanical Engineering).
Subjects/Keywords: Cohesive sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kimiaghalam, N. (2015). Investigating the effect of applied shear stress on cohesive riverbank erosion. (Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/31519
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kimiaghalam, Navid. “Investigating the effect of applied shear stress on cohesive riverbank erosion.” 2015. Thesis, University of Manitoba. Accessed October 22, 2018.
http://hdl.handle.net/1993/31519.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kimiaghalam, Navid. “Investigating the effect of applied shear stress on cohesive riverbank erosion.” 2015. Web. 22 Oct 2018.
Vancouver:
Kimiaghalam N. Investigating the effect of applied shear stress on cohesive riverbank erosion. [Internet] [Thesis]. University of Manitoba; 2015. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/1993/31519.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kimiaghalam N. Investigating the effect of applied shear stress on cohesive riverbank erosion. [Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/31519
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Waikato
10.
Merrett, Nicola G.
An ecological survey on the effect of the dump ground on benthos in Poverty Bay
.
Degree: 1997, University of Waikato
URL: http://hdl.handle.net/10289/10668
► An investigation of the sediments and ecology of the dump ground was conducted in March 1995. The primary purpose of the investigation was to analyse…
(more)
▼ An investigation of the sediments and ecology of the dump ground was conducted in March 1995. The primary purpose of the investigation was to analyse factors which may be affecting the benthic biota on the dump ground. These include heavy metal content of the sediments, grain size characteristics of the sediments, and population distribution of the benthic biota on and surrounding the dump ground. It was intended that information obtained could be utilised in future investigations on the ecology of the dump ground, noting changes that have occurred over time.
Heavy metal analysis of Cadmium, Chromium, Copper, Mercury, Lead, and Zinc from the dump ground, turning basin, and inner harbour area indicate that concentrations of all heavy metals were all very low and well within resource consent limits.
Sediment and ecological samples from 25 sites on and surrounding the dump ground were taken. Two other sites were also surveyed, one from the turning basin, another from the inner harbour area (dredged material). Examination of the sediments has shown that although the dredged material consists solely of mud sized particles the sediments of the dump ground are mainly sand sized sediments. This suggests that during the dumping process dispersion of mud occurs. Mud is transported off the dump ground in a southeasterly direction.
Ecological evaluation indicates benthic species diversity and abundance of macrofauna is high, with no species in particular dominating the species assemblage. Comparison between this study and a 1993 survey shows increased diversity over the dump ground. Increased population abundance was evident and larger sized bivalves are indicative of an ageing population.
Field experiments examining the kelp beds indicate a decline in the population of Ecklonia radiata from 1993 to 1996. It is thought that this decline may be due to suspended
sediment load from the Turanganui River, as the kelp beds are situated in the direction of discharge from the River.
Advisors/Committee Members: Healy, Terry R (advisor).
Subjects/Keywords: sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Merrett, N. G. (1997). An ecological survey on the effect of the dump ground on benthos in Poverty Bay
. (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/10668
Chicago Manual of Style (16th Edition):
Merrett, Nicola G. “An ecological survey on the effect of the dump ground on benthos in Poverty Bay
.” 1997. Masters Thesis, University of Waikato. Accessed October 22, 2018.
http://hdl.handle.net/10289/10668.
MLA Handbook (7th Edition):
Merrett, Nicola G. “An ecological survey on the effect of the dump ground on benthos in Poverty Bay
.” 1997. Web. 22 Oct 2018.
Vancouver:
Merrett NG. An ecological survey on the effect of the dump ground on benthos in Poverty Bay
. [Internet] [Masters thesis]. University of Waikato; 1997. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/10289/10668.
Council of Science Editors:
Merrett NG. An ecological survey on the effect of the dump ground on benthos in Poverty Bay
. [Masters Thesis]. University of Waikato; 1997. Available from: http://hdl.handle.net/10289/10668
University of Georgia
11.
McKinley, Robert Ashley.
Investigating spatial variations in sediment origin using a streamlined sediment fingerprinting approach in a southern Piedmont watershed.
Degree: MS, Crop and Soil Sciences, 2011, University of Georgia
URL: http://purl.galileo.usg.edu/uga_etd/mckinley_robert_a_201108_ms
► Sediment fingerprinting is a relatively recent technique capable of determining the origin of suspended sediment. The objective of this study was to examine spatial variations…
(more)
▼ Sediment fingerprinting is a relatively recent technique capable of determining the origin of suspended
sediment. The objective of this study was to examine spatial variations in the origin of suspended sediments and to test a streamlined fingerprinting approach which would reduce the cost. Samples were collected from three tributaries, the outlet of the main stem, and at the middle of the main stem. Two methods to collect suspended
sediment samples were compared: a mobile continuous flow centrifuge and automated samplers. A relatively small initial tracer suite consisting of 15N, 13C, TN, and TC was employed in tracer selection. Results using a multivariate mixing model showed that banks contributed the majority of
sediment throughout all locations sampled. The use of the streamlined approach should allow for the adoption of
sediment fingerprinting as an operational tool for state agencies in the Southern Piedmont wishing to utilize it in TMDL/BMP evaluations.
Advisors/Committee Members: David E. Radcliffe.
Subjects/Keywords: Sediment Fingerprinting; TMDL; Sediment Load; Uncertainty Analysis
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
McKinley, R. A. (2011). Investigating spatial variations in sediment origin using a streamlined sediment fingerprinting approach in a southern Piedmont watershed. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/mckinley_robert_a_201108_ms
Chicago Manual of Style (16th Edition):
McKinley, Robert Ashley. “Investigating spatial variations in sediment origin using a streamlined sediment fingerprinting approach in a southern Piedmont watershed.” 2011. Masters Thesis, University of Georgia. Accessed October 22, 2018.
http://purl.galileo.usg.edu/uga_etd/mckinley_robert_a_201108_ms.
MLA Handbook (7th Edition):
McKinley, Robert Ashley. “Investigating spatial variations in sediment origin using a streamlined sediment fingerprinting approach in a southern Piedmont watershed.” 2011. Web. 22 Oct 2018.
Vancouver:
McKinley RA. Investigating spatial variations in sediment origin using a streamlined sediment fingerprinting approach in a southern Piedmont watershed. [Internet] [Masters thesis]. University of Georgia; 2011. [cited 2018 Oct 22].
Available from: http://purl.galileo.usg.edu/uga_etd/mckinley_robert_a_201108_ms.
Council of Science Editors:
McKinley RA. Investigating spatial variations in sediment origin using a streamlined sediment fingerprinting approach in a southern Piedmont watershed. [Masters Thesis]. University of Georgia; 2011. Available from: http://purl.galileo.usg.edu/uga_etd/mckinley_robert_a_201108_ms
Boston College
12.
Dow, Samantha.
Measuring 20th century fluvial response to 18-19th century
anthropogenic activity using two generations of damming in the
South River, western Massachusetts.
Degree: MS, Earth and Environmental Sciences, 2018, Boston College
URL: http://dlib.bc.edu/islandora/object/bc-ir:107924
► Centuries-long intensive land use change in the northeastern U.S. provides the opportunity to study the response timescale of geomorphic processes to anthropogenic perturbations. In this…
(more)
▼ Centuries-long intensive land use change in the
northeastern U.S. provides the opportunity to study the response
timescale of geomorphic processes to anthropogenic perturbations.
In this region, deforestation and the construction of dams
following European settlement drastically altered the landscape,
leading to the impoundment of
sediment in mill ponds. This legacy
sediment continues to be released into transport decades after a
dam has been removed or breached. Geochemical tracers can help
distinguish
sediment sources and understand how
sediment moves
through a watershed. The South River in western MA is located in a
formerly glaciated watershed, and these surficial deposits compose
98% of the area. It experienced two generations of damming,
beginning with smaller mill dams in the 18th-19th centuries,
followed by the construction of the Conway Electric Dam (CED), a 17
m tall hydroelectric dam in the early 20th century. Legacy
sediment
deposits from
sediment stored behind mill dams cover 1.5% of the
watershed area. The CED is located near the outlet of the river,
providing a century-long depositional record for the watershed,
during reforestation. I hypothesize that
sediment mobilized from
human activity will contain a different geochemical signature than
glacial material, that recent erosion in the watershed is primarily
from anthropogenic legacy deposits rather than from glacial age
landforms, and channel widening is occurring in reaches of the
channel composed of legacy
sediment, rather than in glacially
confined reaches. These hypotheses were tested through a two part
investigation, consisting of a
sediment tracing study using Hg, and
a Geographic Information Systems (GIS) analysis of channel changes
using aerial photographs from 1940 and 2014. Samples were collected
from river bank exposures of 11 glacial deposits and four mill pond
legacy sites. Two vibracores measuring 476 and 500 cm were
collected in reservoir
sediment stored behind the CED in 2013 and
2017, respectively. Hg concentrations range from 1-4 ppb in glacial
sediment, 3-380 ppb in legacy
sediment, and 2-18 ppb and 7-50 ppb
in the two CED cores. I used Hg as a tracer to estimate percent
contributions to the CED reservoir from each watershed source
during the 20th century. Results from a
sediment mixing model
suggest glacial sources contributed 32 ± 15%, and legacy
sediment
deposits contributed 68 ± 15% during the 20th century. Based on
137Cs dates on the cores, high amounts of legacy
sediment filled in
behind the CED prior to 1953 (74 ± 35 %), and background erosion
from glacial deposits dominated from 1953 until the reservoir was
filled in the 1980s (63 ± 14%). GIS analyses using aerial
photographs from 1940 and 2014 indicate that the channel did not
significantly widen along any section of the river, however,
increases in sinuosity (up to 12%) occurred in the legacy
sediment
dominated reaches of the channel, and minor increases (1-2%)
occurred in the glacial reaches. Overall, these analyses show an
increase in the amount of
sediment released in…
Advisors/Committee Members: Noah P. Snyder (Thesis advisor).
Subjects/Keywords: Legacy sediment; LiDAR; Sediment fingerprinting; Stream restoration
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Dow, S. (2018). Measuring 20th century fluvial response to 18-19th century
anthropogenic activity using two generations of damming in the
South River, western Massachusetts. (Masters Thesis). Boston College. Retrieved from http://dlib.bc.edu/islandora/object/bc-ir:107924
Chicago Manual of Style (16th Edition):
Dow, Samantha. “Measuring 20th century fluvial response to 18-19th century
anthropogenic activity using two generations of damming in the
South River, western Massachusetts.” 2018. Masters Thesis, Boston College. Accessed October 22, 2018.
http://dlib.bc.edu/islandora/object/bc-ir:107924.
MLA Handbook (7th Edition):
Dow, Samantha. “Measuring 20th century fluvial response to 18-19th century
anthropogenic activity using two generations of damming in the
South River, western Massachusetts.” 2018. Web. 22 Oct 2018.
Vancouver:
Dow S. Measuring 20th century fluvial response to 18-19th century
anthropogenic activity using two generations of damming in the
South River, western Massachusetts. [Internet] [Masters thesis]. Boston College; 2018. [cited 2018 Oct 22].
Available from: http://dlib.bc.edu/islandora/object/bc-ir:107924.
Council of Science Editors:
Dow S. Measuring 20th century fluvial response to 18-19th century
anthropogenic activity using two generations of damming in the
South River, western Massachusetts. [Masters Thesis]. Boston College; 2018. Available from: http://dlib.bc.edu/islandora/object/bc-ir:107924
NSYSU
13.
Huang, Bo-Shen.
Design of an Automatic Push Corer.
Degree: Master, Institute of Undersea Technology, 2018, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-214011
► The method of using a remotely underwater vehicle (ROV) equipped with push corers to collect marine sediments has fundamental advantages, including precise localization of coring…
(more)
▼ The method of using a remotely underwater vehicle (ROV) equipped with push corers to collect marine sediments has fundamental advantages, including precise localization of coring sites, visual recognition assistance from seafloor images, and high-density sampling within a small area. Currently, an ROV that aims to collect marine sediments is always equipped with robotic arms, which are manipulated by a pilot on the surface vessel to carry out
sediment sampling through push corers. However, a well-trained pilot is required to assure sampling efficiency. Even to a well-trained pilot, it is still challenging to perform
sediment sampling by manipulating robotic arms under bad weather. Moreover, it is essentially infeasible to install robotic arms with high degrees of freedom on small and medium-sized ROVs, causing that
sediment sampling is typically excluded from the to-do list of those ROVs. Inspired by the automatic tool changer (ATC) and tool spindle of a computer numerical control (CNC) machine, this research develops a single actuator automatic push corer (APC) that can be integrated with an ROV as a payload device for
sediment sampling purposes. The APC has four subsystems, including a vertical sampler, a rotating tube changer, a protective frame, and an electric power and communication medium. The vertical sampler consists of a transmission gear set, a rack, and a clamp. The rotating tube changer consists of a bevel gear pair, a Geneva mechanism, a shaft, and a turntable. The protective frame consists of a motor base and a supporting frame. The electric power and communication medium is a watertight cable that connects the APC actuator to the ROV junction box. Through the combination of the vertical sampler and rotating tube changer, the APC actuator can simultaneously drive these two subsystems to perform the sampling and tube changing sequentially. The APC actuator and components of the vertical sampler and rotating tube changer are all mounted on the motor base. The supporting frame protects the turntable and sampling tubes and allows the APC to firmly settle on the seafloor during
sediment sampling. The watertight cable allows the operating voltage and control signals for the APC actuator to be transmitted to the APC from a mother ship through the ROV; it also allows the feedback signals of the APC actuator to be returned back to the mother ship through the ROV.
Advisors/Committee Members: Yu-Cheng Chou (committee member), Hsin-Hung Chen (chair), Sheng-Chih Shen (chair).
Subjects/Keywords: Sediment sampling; Automatic sediment sampling; Push corer
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Huang, B. (2018). Design of an Automatic Push Corer. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-214011
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huang, Bo-Shen. “Design of an Automatic Push Corer.” 2018. Thesis, NSYSU. Accessed October 22, 2018.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-214011.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huang, Bo-Shen. “Design of an Automatic Push Corer.” 2018. Web. 22 Oct 2018.
Vancouver:
Huang B. Design of an Automatic Push Corer. [Internet] [Thesis]. NSYSU; 2018. [cited 2018 Oct 22].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-214011.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huang B. Design of an Automatic Push Corer. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-214011
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Linnaeus University
14.
Karlsson, Niklas.
Identifiering av åtgärder som kan bidra till att förbättra analysen av miljökemiska sedimentundersökningar : En studie på provtagningsdata från Kalmarsund och Oskarshamns hamn.
Degree: Biology and Environmental Science, 2013, Linnaeus University
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-28307
► Föroreningar av metaller är ett problem längs med kusterna, vilket har en negativ inverkan på vattenlevande organismer och miljön. Orsaken till detta beror till…
(more)
▼ Föroreningar av metaller är ett problem längs med kusterna, vilket har en negativ inverkan på vattenlevande organismer och miljön. Orsaken till detta beror till stor del på pågående utsläpp från tätorter, hamnar, industrier och på ”gamla synder (då det inte fanns några detaljerade miljölagar som reglerade spridningen av föroreningar från exempelvis industriprocesser)”. Utsläpp av föroreningar behöver inte bara komma lokalt utan kan också transporteras via avrinningsområdena och via atmosfäriskt nedfall. Idag arbetar länsstyrelsen med att invertera och sanera förorenade områden, men för att kunna ta reda på hur det ligger till med kusterna och hamnarna är sedimentprovtagningar ett måste. Att analysera data från sedimentprover kan vara speciellt utmanande eftersom det finns många olika faktorer som kan ha betydelse när data skall analyseras. Det kan vara faktorer som bottentyper, utspädning, kornstorlekar mm i en miljö som är speciellt utsatt för omrörningar. Syftet med detta arbete är att identifiera åtgärder som kan bidra till att förbättra analysen av föroreningar från sedimentundersökningar då det finns faktorer som kan påverka föroreningssignalen. Till detta arbete har data från Sveriges Geologiska Undersökning (SGU) använts. Provtagningarna genomfördes längs med kusten i Kalmarsund under åren 1998, 2003 och 2008. Dessa data har tidigare studerats med fokus på metallkoncentrationer. I detta arbete ligger fokus istället på att göra fördjupande jämförelser genom att studera morän, organiskt material, samt tillämpningen av normaliseringar och elementförhållanden. Även data från Structor Miljö Göteborg AB som tagit prover i Oskarshamns hamn under 2011 med hjälp av sedimentfällor har använts. Syftet är att göra en jämförelse med SGU:s provtagningar, samt att undersöka miljögiftsbelastningen och sedimentationshastigheten i Oskarshamns hamn och ytterområde. Resultatet visar att spridningen av metaller kan förbättras genom att studera koncentrationerna tillsammans med organiskt material, normalisering mot organiskt material och naturliga utsläpp av metaller ifrån morän. Resultatet visar också att sedimentfällor är ett utmärkt komplement till vanliga sedimentprovtagare.
Subjects/Keywords: sediment trap; sediment sampling; sedimentfälla; sedimentprovtagning
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Karlsson, N. (2013). Identifiering av åtgärder som kan bidra till att förbättra analysen av miljökemiska sedimentundersökningar : En studie på provtagningsdata från Kalmarsund och Oskarshamns hamn. (Thesis). Linnaeus University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-28307
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Karlsson, Niklas. “Identifiering av åtgärder som kan bidra till att förbättra analysen av miljökemiska sedimentundersökningar : En studie på provtagningsdata från Kalmarsund och Oskarshamns hamn.” 2013. Thesis, Linnaeus University. Accessed October 22, 2018.
http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-28307.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Karlsson, Niklas. “Identifiering av åtgärder som kan bidra till att förbättra analysen av miljökemiska sedimentundersökningar : En studie på provtagningsdata från Kalmarsund och Oskarshamns hamn.” 2013. Web. 22 Oct 2018.
Vancouver:
Karlsson N. Identifiering av åtgärder som kan bidra till att förbättra analysen av miljökemiska sedimentundersökningar : En studie på provtagningsdata från Kalmarsund och Oskarshamns hamn. [Internet] [Thesis]. Linnaeus University; 2013. [cited 2018 Oct 22].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-28307.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Karlsson N. Identifiering av åtgärder som kan bidra till att förbättra analysen av miljökemiska sedimentundersökningar : En studie på provtagningsdata från Kalmarsund och Oskarshamns hamn. [Thesis]. Linnaeus University; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-28307
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Kashmir
15.
Ahanger, Manzoor Ahmad.
Hysteresis effect on sediment transport rate in Alluvial
channels;.
Degree: 2015, University of Kashmir
URL: http://shodhganga.inflibnet.ac.in/handle/10603/50925
► The main aim of the present study is to evolve a procedure for finding out the sediment discharge q during an unsteady flow newlineFor this…
(more)
▼ The main aim of the present study is to evolve a
procedure for finding out the sediment discharge q during an
unsteady flow newlineFor this purpose a number of experiments have
been carried out on a feed type tilting flume of 1m width and 24 m
long using two uniform sizes of sand
Advisors/Committee Members: Asawa, G.L. and Lone, M.A..
Subjects/Keywords: Sediment-Alluvial-Hysteresis
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ahanger, M. A. (2015). Hysteresis effect on sediment transport rate in Alluvial
channels;. (Thesis). University of Kashmir. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/50925
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ahanger, Manzoor Ahmad. “Hysteresis effect on sediment transport rate in Alluvial
channels;.” 2015. Thesis, University of Kashmir. Accessed October 22, 2018.
http://shodhganga.inflibnet.ac.in/handle/10603/50925.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ahanger, Manzoor Ahmad. “Hysteresis effect on sediment transport rate in Alluvial
channels;.” 2015. Web. 22 Oct 2018.
Vancouver:
Ahanger MA. Hysteresis effect on sediment transport rate in Alluvial
channels;. [Internet] [Thesis]. University of Kashmir; 2015. [cited 2018 Oct 22].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/50925.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ahanger MA. Hysteresis effect on sediment transport rate in Alluvial
channels;. [Thesis]. University of Kashmir; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/50925
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Kashmir
16.
Ahanger, Manzoor Ahmad.
Hysteresis effect on sediment transport rate in Alluvial
channels; -.
Degree: Engineering, 2006, University of Kashmir
URL: http://shodhganga.inflibnet.ac.in/handle/10603/49092
► The main aim of the present study is to evolve a procedure for finding out the sediment discharge q during an unsteady flow newlineFor this…
(more)
▼ The main aim of the present study is to evolve a
procedure for finding out the sediment discharge q during an
unsteady flow newlineFor this purpose a number of experiments have
been carried out on a feed type tilting flume of 1m width and 24 m
long using two uniform sizes of sand
Bibliography given
Advisors/Committee Members: Asawa, G L. and Lone, M A.
Subjects/Keywords: Alluvial; Hysteresis; Sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ahanger, M. A. (2006). Hysteresis effect on sediment transport rate in Alluvial
channels; -. (Thesis). University of Kashmir. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/49092
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Ahanger, Manzoor Ahmad. “Hysteresis effect on sediment transport rate in Alluvial
channels; -.” 2006. Thesis, University of Kashmir. Accessed October 22, 2018.
http://shodhganga.inflibnet.ac.in/handle/10603/49092.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ahanger, Manzoor Ahmad. “Hysteresis effect on sediment transport rate in Alluvial
channels; -.” 2006. Web. 22 Oct 2018.
Vancouver:
Ahanger MA. Hysteresis effect on sediment transport rate in Alluvial
channels; -. [Internet] [Thesis]. University of Kashmir; 2006. [cited 2018 Oct 22].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/49092.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ahanger MA. Hysteresis effect on sediment transport rate in Alluvial
channels; -. [Thesis]. University of Kashmir; 2006. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/49092
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
17.
Wu, Zhe-yu.
Historical changes and speciation of heavy metals in sediments collected from the southwestern coast off Taiwan.
Degree: Master, Marine Geology and chemistry, 2010, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0208110-200636
► This research collected surface (<15 cm) sediments from estuarine and coastal zones off southwestern Taiwan. Basic sediment parameters, including grain size, and total organic carbon…
(more)
▼ This research collected surface (<15 cm) sediments from estuarine and coastal zones off southwestern Taiwan. Basic
sediment parameters, including grain size, and total organic carbon (TOC) and total inorganic carbon (TIC) concentrations were analyzed. For heavy metals (Fe, Mn, Cd, Cu, Ni, Pb, and Zn), total metal concentrations and metal fractions separated by sequential extraction techniques were determined. This study also obtained several previously collected
sediment cores in the Gaoping Canyon area that had been dated by other researchers. Results obtained in this study are used in order to understand the distribution patterns of heavy metals in coastal sediments off southwestern Taiwan, and related to regional environmental changes regarding heavy metals.
The distribution of heavy metal fractions and their geochemical
significances were studied.
Results obtained in this study indicate that physicochemical characteristics of sediments largely affected heavy metal distribution in coastal sediments off southwestern Taiwan. Regional flow patterns contributed to the observed distribution patterns. Higher heavy metal concentrations were found in sediments collected near the Gaoping river mouth, the Gaoping Canyon and its nearby continental slope, and a narrow banded offshore region off the Anping-Tainan urban areas. These results reflect the distribution of fine-grained sediments in the studied area.
Vertical profiles of heavy metals in four dated cores showed drastic increases of heavy metal concentrations since 1995-2000, and some extent of decreases during 2003-2006 in two of the cores. Although actions of environmental protection regarding heavy metal pollution had taken place in this region, decreases in
sediment heavy metals were mostly attributed to episodic typhoon and possibly
sediment slumping events. With the recently intensified landslides and mud flows in the upper reaches of the river that would bring upstream soils and particles to the estuarine region, leading to the decrease of metal concentrations in the Gaoping estuarine sediments, a more significant decreasing trend in
sediment metal concentrations can be speculated for the future.
Advisors/Committee Members: Tsu-Chien Liu (chair), Kuo-Tung Jiann (committee member), Hui-Ling Lin (chair), Liang-Saw Wen (chair).
Subjects/Keywords: heavy metal; sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wu, Z. (2010). Historical changes and speciation of heavy metals in sediments collected from the southwestern coast off Taiwan. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0208110-200636
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wu, Zhe-yu. “Historical changes and speciation of heavy metals in sediments collected from the southwestern coast off Taiwan.” 2010. Thesis, NSYSU. Accessed October 22, 2018.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0208110-200636.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wu, Zhe-yu. “Historical changes and speciation of heavy metals in sediments collected from the southwestern coast off Taiwan.” 2010. Web. 22 Oct 2018.
Vancouver:
Wu Z. Historical changes and speciation of heavy metals in sediments collected from the southwestern coast off Taiwan. [Internet] [Thesis]. NSYSU; 2010. [cited 2018 Oct 22].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0208110-200636.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wu Z. Historical changes and speciation of heavy metals in sediments collected from the southwestern coast off Taiwan. [Thesis]. NSYSU; 2010. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0208110-200636
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
18.
Guannel, Gregory E.
Observations of cross-shore sediment transport and formulation of the undertow.
Degree: PhD, Civil Engineering, 2009, Oregon State University
URL: http://hdl.handle.net/1957/13007
► A new set of data from a large-scale sand bar migration experiment is presented. During this experiment, two sandbars were generated. One of the bar…
(more)
▼ A new set of data from a large-scale sand bar migration experiment is presented. During this experiment, two sandbars were generated. One of the bar was generated by the action of undertow, and
sediment moved offshore. The other bar was generated by the shoreward movement of
sediment coming from the first bar. The principal mechanism responsible for shoreward movement is associated with effects of velocity asymmetry. Analysis of bathymetric surveys and suspended
sediment concentration data reveals that suspended load contributed to a large extent to the formation of the first bar. Bed load was also important, and was moving in the same direction as suspended load. For the second bar, shoreward
sediment movement occurred as bedload. Suspended load was moving in the opposite direction as bed load. This difference in
sediment movement is explained by the predominance of the undertow in the suspended
sediment flux. Two models were tested to reproduce the observed
sediment transport, a wave-averaged (energetics) model and a wave-resolved model. After proper calibration, both models yielded satisfactory results. Calibration efforts highlighted the need for robust models of
sediment pickup functions and
sediment eddy diffusivity. They also showed the need for a deterministic undertow models. Formulations of the undertow are presented. These formulations are valid for all relative water depths, and include mean current advective terms. These formulations show that the forcing of the undertow is depth-uniform, assuming linear water wave theory. The model is tested against four datasets to evaluate the possibility of a deterministic model. Although a constant eddy viscosity would yield such a model, no universal parametrization could be determined.
Advisors/Committee Members: Ozkan-Haller, H. Tuba (advisor), Cox, Daniel (committee member).
Subjects/Keywords: undertow; Sediment transport
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Guannel, G. E. (2009). Observations of cross-shore sediment transport and formulation of the undertow. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/13007
Chicago Manual of Style (16th Edition):
Guannel, Gregory E. “Observations of cross-shore sediment transport and formulation of the undertow.” 2009. Doctoral Dissertation, Oregon State University. Accessed October 22, 2018.
http://hdl.handle.net/1957/13007.
MLA Handbook (7th Edition):
Guannel, Gregory E. “Observations of cross-shore sediment transport and formulation of the undertow.” 2009. Web. 22 Oct 2018.
Vancouver:
Guannel GE. Observations of cross-shore sediment transport and formulation of the undertow. [Internet] [Doctoral dissertation]. Oregon State University; 2009. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/1957/13007.
Council of Science Editors:
Guannel GE. Observations of cross-shore sediment transport and formulation of the undertow. [Doctoral Dissertation]. Oregon State University; 2009. Available from: http://hdl.handle.net/1957/13007
University of Aberdeen
19.
Limmer, David.
Sediment transport processes on the Mid-Pleistocene to Recent Indus Shelf.
Degree: PhD, 2012, University of Aberdeen
URL: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=192321
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569631
► Continental shelves mark the zone between the terrestrial environment and deep marine realm and so are important for understanding sediment transport to the deep ocean.…
(more)
▼ Continental shelves mark the zone between the terrestrial environment and deep marine realm and so are important for understanding sediment transport to the deep ocean. This study investigates the storage and potential record of the terrestrial environment on the Indus Shelf in the North Arabian Sea. The Indus Shelf records the development of clinoform sequences responding to sea level rise since at least the Mid Quaternary. Mapping of sedimentary and structural features established a clear link between sediment transport, deformation and sediment facies. Dome structures in the nearshore zone provide accommodation space on the slope for clinoform development through relative subsidence of neighbouring strata. All clinoforms contain partially eroded topsets formed during sea level fall. Multi-proxy analyses of two cores from the western shelf failed to establish a clear link between the continental record of provenance and weathering from the subaerial Indus Delta and the Indus Shelf system during the Holocene. The dominant source of sediment to the Indus Shelf appears to be erosion of Indus Delta sediments deposited during previous lowstands. During the Early Holocene some sediment is supplied to the north-west shelf from the Makran region due to the strengthening of the Asian Monsoon initiating the northwest to southeast longshore current and mixes with the Indus sediment. Estimates of mineral composition through a six end member algorithm further suggest very little relationship between provenance, weathering and published climatic records before sea level reached present levels. This thesis suggests that the Indus shelf, a high energy, a high sediment supply shelf, stores significant quantities of sediment derived from terrigenous sources. However, erosion and reworking processes mean that the record is not a good indicator of conditions in the terrestrial environment at the time of deposition.
Subjects/Keywords: 551; Sediment transport
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Limmer, D. (2012). Sediment transport processes on the Mid-Pleistocene to Recent Indus Shelf. (Doctoral Dissertation). University of Aberdeen. Retrieved from http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=192321 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569631
Chicago Manual of Style (16th Edition):
Limmer, David. “Sediment transport processes on the Mid-Pleistocene to Recent Indus Shelf.” 2012. Doctoral Dissertation, University of Aberdeen. Accessed October 22, 2018.
http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=192321 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569631.
MLA Handbook (7th Edition):
Limmer, David. “Sediment transport processes on the Mid-Pleistocene to Recent Indus Shelf.” 2012. Web. 22 Oct 2018.
Vancouver:
Limmer D. Sediment transport processes on the Mid-Pleistocene to Recent Indus Shelf. [Internet] [Doctoral dissertation]. University of Aberdeen; 2012. [cited 2018 Oct 22].
Available from: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=192321 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569631.
Council of Science Editors:
Limmer D. Sediment transport processes on the Mid-Pleistocene to Recent Indus Shelf. [Doctoral Dissertation]. University of Aberdeen; 2012. Available from: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=192321 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569631
Hong Kong University of Science and Technology
20.
Chen, Botao.
Experimental study of bore-driven swash-swash interactions on an impermeable rough beach slope.
Degree: 2015, Hong Kong University of Science and Technology
URL: https://doi.org/10.14711/thesis-b1514731
;
http://repository.ust.hk/ir/bitstream/1783.1-78884/1/th_redirect.html
► Detailed hydrodynamics within the swash-swash interactions are studied based on experimental measurements. Two bores are generated using a double dam-break mechanism and interact on a…
(more)
▼ Detailed hydrodynamics within the swash-swash interactions are studied based on experimental measurements. Two bores are generated using a double dam-break mechanism and interact on a 1:10 impermeable sand-rough beach. Two series of experiments are conducted. The first series is carried out to explore the overall features of swash-swash interaction. The water levels in the reservoirs and opening times between the two gates of the dam break mechanism are varied to generate a large number of different swash-swash interactions. Experimental flow depth data is measured using acoustic displacement sensors. The results are combined with estimated times of flow reversal, obtained from a model based on the nonlinear shallow water equation, to determine the type of swash-swash interaction. Two types of interactions are identified: wave capture interaction, when the interaction with the second bore occurs during the uprush of the first bore, and weak wave-backwash interactions when interaction happens during the backwash of the first bore. The second series of experiments investigates the detailed hydrodynamics of these two types of swash-swash interaction by using a combined particle image velocimetry and laser induced fluorescent system, which enables comparisons to be made between wave capture interaction, weak wave-backwash interaction and the single swash event. The results of the first series of experiments show that the relative strength of the bores at the initial shoreline and time between their arrivals determines the initial type of interaction, however the type as well as the intensity of the interaction may vary throughout the swash-zone for the same swash event. The results of the second series of experiment show that during wave capture and weak wave-backwash interactions, the fluid of the first bore is advected upwards, then mixed with the fluid of the second bore by highly turbulent vortices generated at the front of the second bore because of the relative velocity differences between the two bores. Discussions of the results obtained in the experimental study highlights that swash-swash interaction results in large shoreward local fluid accelerations and strong turbulence intensities in particular with a large vertical fluctuating component. In addition, the velocity gradients indicate that the bed shear stress also increases during interaction. All these factors indicate that swash-swash interactions have the potential to enhance shoreward sediment transport in the swash zone.
Subjects/Keywords: Sediment transport; Hydrodynamics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chen, B. (2015). Experimental study of bore-driven swash-swash interactions on an impermeable rough beach slope. (Thesis). Hong Kong University of Science and Technology. Retrieved from https://doi.org/10.14711/thesis-b1514731 ; http://repository.ust.hk/ir/bitstream/1783.1-78884/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chen, Botao. “Experimental study of bore-driven swash-swash interactions on an impermeable rough beach slope.” 2015. Thesis, Hong Kong University of Science and Technology. Accessed October 22, 2018.
https://doi.org/10.14711/thesis-b1514731 ; http://repository.ust.hk/ir/bitstream/1783.1-78884/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Botao. “Experimental study of bore-driven swash-swash interactions on an impermeable rough beach slope.” 2015. Web. 22 Oct 2018.
Vancouver:
Chen B. Experimental study of bore-driven swash-swash interactions on an impermeable rough beach slope. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2015. [cited 2018 Oct 22].
Available from: https://doi.org/10.14711/thesis-b1514731 ; http://repository.ust.hk/ir/bitstream/1783.1-78884/1/th_redirect.html.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen B. Experimental study of bore-driven swash-swash interactions on an impermeable rough beach slope. [Thesis]. Hong Kong University of Science and Technology; 2015. Available from: https://doi.org/10.14711/thesis-b1514731 ; http://repository.ust.hk/ir/bitstream/1783.1-78884/1/th_redirect.html
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universiteit Utrecht
21.
Stoutjesdijk, J.
Fine sediment transport and storage in a gravel bed river, a pilot study in the Geul River, the Netherlands.
Degree: 2013, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/278664
► This pilot study investigates the storage of fine sediments in the river bed of the Geul River, the Netherlands. The sediment infiltration into the gravel…
(more)
▼ This pilot study investigates the storage of fine sediments in the river bed of the Geul River, the Netherlands. The
sediment infiltration into the gravel bed is measured at four locations in the Geul River using two different methods: a gravimetric method and a metal concentration-based method. Both methods concerned the placement of
sediment traps in the gravel bed, consisting of cylindrical mesh cages with a diameter of 15 cm and a height of 10 cm. In the first method, the cage was filled with clean gravel larger than 12.5 mm (the size of the mesh openings) collected from the local river bed (with a mean gravel size of 19 mm). After two to sixty-five days, the
sediment traps were removed. In the second method, the
sediment traps were filled with clean gravel and 700 grams of fine sand with low metal concentrations. During the sampling period, this fine sand was contaminated by deposition of metal-contaminated fine
sediment from the Geul River. After four to eight days, the
sediment traps were removed. For both methods the trap is placed in a bag. The bag was pulled to the bottom of the trap when the trap was placed and was pulled up when the traps were removed to retain the fine
sediment. The fine
sediment was washed from the
sediment traps and subsequently dried and weighed. For the second method, the zinc concentrations of the fine sand and the fine
sediment collected from the
sediment traps were measured using a handheld XRF analyser. The
sediment flux was then calculated from the differences between the zinc concentrations in the
sediment samples and the fine sand. The amount of gravel-stored fine
sediment was measured with a resuspension cylinder. It was found that the mean and variation of the fine
sediment deposition rates increased with stream discharge during the sampling period. Changes in the trapped fine
sediment weight were related to changes in discharge. The average fine
sediment flux was determined by fitting a mass balance to the measurements. Based on this flux-discharge relation and resuspension measurements, average
sediment residence times were calculated. A travel time model for suspended and bed load
sediment based on the probability of
sediment having a certain residence time was made. It was found that it takes bed load on average 13 days to travel through a river reach of 20 km and suspended
sediment 126 days.
Advisors/Committee Members: van der Perk, Dr M..
Subjects/Keywords: Geowetenschappen; sediment storage, sediment flux, sediment travel time, gravel bed river
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Stoutjesdijk, J. (2013). Fine sediment transport and storage in a gravel bed river, a pilot study in the Geul River, the Netherlands. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/278664
Chicago Manual of Style (16th Edition):
Stoutjesdijk, J. “Fine sediment transport and storage in a gravel bed river, a pilot study in the Geul River, the Netherlands.” 2013. Masters Thesis, Universiteit Utrecht. Accessed October 22, 2018.
http://dspace.library.uu.nl:8080/handle/1874/278664.
MLA Handbook (7th Edition):
Stoutjesdijk, J. “Fine sediment transport and storage in a gravel bed river, a pilot study in the Geul River, the Netherlands.” 2013. Web. 22 Oct 2018.
Vancouver:
Stoutjesdijk J. Fine sediment transport and storage in a gravel bed river, a pilot study in the Geul River, the Netherlands. [Internet] [Masters thesis]. Universiteit Utrecht; 2013. [cited 2018 Oct 22].
Available from: http://dspace.library.uu.nl:8080/handle/1874/278664.
Council of Science Editors:
Stoutjesdijk J. Fine sediment transport and storage in a gravel bed river, a pilot study in the Geul River, the Netherlands. [Masters Thesis]. Universiteit Utrecht; 2013. Available from: http://dspace.library.uu.nl:8080/handle/1874/278664
University of Manitoba
22.
Boudreault, Monica.
Sediment source apportionment under different spatial frameworks in an agricultural watershed in atlantic Canada.
Degree: Soil Science, 2016, University of Manitoba
URL: http://hdl.handle.net/1993/31603
► Sediments negatively impact the quality of surface waters and are a significant source of contaminants, such as nutrients and pesticides in agricultural watersheds. Sediment fingerprinting…
(more)
▼ Sediments negatively impact the quality of surface waters and are a significant source of contaminants, such as nutrients and pesticides in agricultural watersheds.
Sediment fingerprinting is a relatively recent technique capable of determining the origin of suspended
sediment. In this thesis, we investigated the sources of suspended sediments in a predominantly rural watershed in Atlantic Canada. Our first objective was to determine
sediment source apportionment estimates by treating the watershed as a single catchment, and making the assumption that conditions affecting source production and transport, from the land to the stream, were uniform across the watershed. For the first objective, suspended sediments were collected at a single target location for
sediment apportionment (main outlet) and used to represent
sediment dynamics throughout the entire catchment. For the second objective, we examined not only the whole watershed but also sub-watersheds within it, to better understand processes affecting
sediment dynamics.
Advisors/Committee Members: Lobb, David (Soil Science) (supervisor), Sheng, Li (Agriculture and Agri-Food Canada) Genevieve, Ali (Geological Sciences) Philip, Owens (University of Northern British Columbia) (examiningcommittee).
Subjects/Keywords: Sediment fingerprinting; Sediment source tracing; Tracers; Water quality; Sediment properties
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Boudreault, M. (2016). Sediment source apportionment under different spatial frameworks in an agricultural watershed in atlantic Canada. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/31603
Chicago Manual of Style (16th Edition):
Boudreault, Monica. “Sediment source apportionment under different spatial frameworks in an agricultural watershed in atlantic Canada.” 2016. Masters Thesis, University of Manitoba. Accessed October 22, 2018.
http://hdl.handle.net/1993/31603.
MLA Handbook (7th Edition):
Boudreault, Monica. “Sediment source apportionment under different spatial frameworks in an agricultural watershed in atlantic Canada.” 2016. Web. 22 Oct 2018.
Vancouver:
Boudreault M. Sediment source apportionment under different spatial frameworks in an agricultural watershed in atlantic Canada. [Internet] [Masters thesis]. University of Manitoba; 2016. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/1993/31603.
Council of Science Editors:
Boudreault M. Sediment source apportionment under different spatial frameworks in an agricultural watershed in atlantic Canada. [Masters Thesis]. University of Manitoba; 2016. Available from: http://hdl.handle.net/1993/31603
Virginia Tech
23.
Utley, Barbra Crompton.
Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration.
Degree: Biological Systems Engineering, 2009, Virginia Tech
URL: http://hdl.handle.net/10919/29570
► According to the US Environmental Protection Agency (USEPA) sediment is a leading cause of water quality impairment (US EPA, 2002). The annual costs of sediment…
(more)
▼ According to the US Environmental Protection Agency (USEPA)
sediment is a leading cause of water quality impairment (US EPA, 2002). The annual costs of
sediment pollution in North America alone are estimated to range between 20 and 50 billion (Pimentel et al., 1995; Osterkamp et al, 1998, 2004). Due to the large spatial and temporal variations inherent in
sediment transport, suspended
sediment measurement is challenging.
The overall goal of this research was to develop and test an inexpensive sensor for continuous suspended
sediment monitoring in streams. This study was designed to determine if the gain and phase components of permittivity could be used to predict suspended
sediment concentrations (SSC). A bench-scale suspension system was designed and tested to guarantee that there were no significant differences in the
sediment suspension vertically or horizontally within the system. This study developed prediction models for SSC with input variables of temperature, specific conductivity, and gain and/or phase at multiple frequencies. The permittivity sensor is comprised of an electrode, power source, and a control box or frequency generator.
Fixed and mixed effect, multiple, linear regression models were created and compared for target frequencies. However, it was not possible to meet the normality requirements for prediction accuracy. Partial Least Squares (PLS) regression techniques were also applied to gain and phase data for 127 of the 635 frequencies. The three models with the lowest error between predicted and actual values of SSC for validation were further tested with nine levels of independent validation data. The largest model error (error>50%) occurred for the top three models at 0 and 500 mg/L. At the higher concentrations error varied from 1-40%.
Once the treatment levels, of the independent validation data set, were near 1000 mg/L the prediction accuracy increased for the top three models. Model 3A, a phase based model, preformed the best. Model 3A was able to predict six of the nine independent validation treatment levels within 300 mg/L. Future research will provide additional laboratory and field testing of the prototype sensor.
Advisors/Committee Members: Theresa Wynn (committeechair), Zipper, Carl E. (committee member), Panos Diplas (committee member), W. Cully Hession (committee member), Naiqian Zhang (committee member), Naraine Persaud (committee member).
Subjects/Keywords: streams; sediment transport; permittivity; suspended sediment concentration; sediment
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Utley, B. C. (2009). Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration. (Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/29570
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Utley, Barbra Crompton. “Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration.” 2009. Thesis, Virginia Tech. Accessed October 22, 2018.
http://hdl.handle.net/10919/29570.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Utley, Barbra Crompton. “Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration.” 2009. Web. 22 Oct 2018.
Vancouver:
Utley BC. Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration. [Internet] [Thesis]. Virginia Tech; 2009. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/10919/29570.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Utley BC. Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration. [Thesis]. Virginia Tech; 2009. Available from: http://hdl.handle.net/10919/29570
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Kyoto University / 京都大学
24.
CHUTACHINDAKATE, CHADIN.
INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION : 統合的な流砂アプローチと気候変動がダム堆砂に及ぼす影響.
Degree: 博士(工学), 2009, Kyoto University / 京都大学
URL: http://hdl.handle.net/2433/85392
;
http://dx.doi.org/10.14989/doctor.k14934
► Nowadays the sediment becomes one significant problem to reservoir watershed and it is effect and related to reservoir operation system. As the research topic, an…
(more)
▼ Nowadays the sediment becomes one significant problem to reservoir watershed and it is effect and related to reservoir operation system. As the research topic, an integrated sediment approach and impacts of climate change on reservoir sedimentation, there are three main parts demonstrated in this research that all parts are related together with sediment point of view. Annual sediment depositing volume in reservoir was estimated by general soil loss equation but the efficiency was not acceptable. The first part of this study shows that the efficiency is improved by using general soil loss equation with sediment transport model. The second part is about monitoring the sediment inflow to reservoir. The important parameter to operate the reservoir is turbidity concentration of flow into dam, in the second part the suspended sediment concentration was predicted by real time therefore the reservoir operation to release turbid flow will get more efficiency. For last part, in the next future year sediment yield and water resources on the study area were investigated by extrapolated temperature and rainfall data then the results will be useful for long term reservoir operation system. First part, the integrated sedimentation was used to model an annual depositing sediment volume in reservoir. Sediment system in watershed includes not only sediment yield but also sediment transportation along the rivers. In this study, the Geographic Information System (GIS) incorporated with sediment yield model can be assisted to enhance the evaluation estimation of soil erosion. Surface erosion on Managawa river basin is then computed with the Modified Universal Soil Loss Equation (MUSLE) and it is verified to reflect the hydrological processes to which it will be able to estimate soil losses. In the sediment transport routing module, total load equation is applied to carry sediment from soil surface erosion to deposit in Managawa dam. According to annual accumulation sediment volume data in Managawa reservoir during 1981 – 2004, the establish model and simulation results are satisfied. The efficiency of the Modified Universal Equation with sediment routing in rivers is more than the simple Modified Universal Equation. Second part, the real time suspended sediment concentration forecasting was used for monitoring the turbidity flow on the upstream of reservoir. The sediment flow into the reservoir is a factor for decision support in real time reservoir operation therefore the serious area of sediment erosion of Managawa river basin, Japan is monitored by suspended sediment gauge. The hourly suspended sediment concentration at Okumotani station; the upstream of Managawa reservoir, was monitored and estimated by the artificial neural network (ANN) model that the input data were rainfall data and its products. This artificial neural network (ANN) was calibrated and validated by using recently suspended sediment data on heavy rainfall events from December 2006 to January 2008. Choosing an appropriate neural network structure and providing…
Subjects/Keywords: Sediment Yield; Sediment Transport; Sediment Prediction; Reservoir Sedimentation; Climate Change
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
CHUTACHINDAKATE, C. (2009). INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION : 統合的な流砂アプローチと気候変動がダム堆砂に及ぼす影響. (Thesis). Kyoto University / 京都大学. Retrieved from http://hdl.handle.net/2433/85392 ; http://dx.doi.org/10.14989/doctor.k14934
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
CHUTACHINDAKATE, CHADIN. “INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION : 統合的な流砂アプローチと気候変動がダム堆砂に及ぼす影響.” 2009. Thesis, Kyoto University / 京都大学. Accessed October 22, 2018.
http://hdl.handle.net/2433/85392 ; http://dx.doi.org/10.14989/doctor.k14934.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
CHUTACHINDAKATE, CHADIN. “INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION : 統合的な流砂アプローチと気候変動がダム堆砂に及ぼす影響.” 2009. Web. 22 Oct 2018.
Vancouver:
CHUTACHINDAKATE C. INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION : 統合的な流砂アプローチと気候変動がダム堆砂に及ぼす影響. [Internet] [Thesis]. Kyoto University / 京都大学; 2009. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/2433/85392 ; http://dx.doi.org/10.14989/doctor.k14934.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
CHUTACHINDAKATE C. INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION : 統合的な流砂アプローチと気候変動がダム堆砂に及ぼす影響. [Thesis]. Kyoto University / 京都大学; 2009. Available from: http://hdl.handle.net/2433/85392 ; http://dx.doi.org/10.14989/doctor.k14934
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Kyoto University
25.
CHUTACHINDAKATE, CHADIN.
INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION
.
Degree: 2009, Kyoto University
URL: http://hdl.handle.net/2433/85392
► Nowadays the sediment becomes one significant problem to reservoir watershed and it is effect and related to reservoir operation system. As the research topic, an…
(more)
▼ Nowadays the
sediment becomes one significant problem to reservoir watershed and it is effect and related to reservoir operation system. As the research topic, an integrated
sediment approach and impacts of climate change on reservoir sedimentation, there are three main parts demonstrated in this research that all parts are related together with
sediment point of view. Annual
sediment depositing volume in reservoir was estimated by general soil loss equation but the efficiency was not acceptable. The first part of this study shows that the efficiency is improved by using general soil loss equation with
sediment transport model. The second part is about monitoring the
sediment inflow to reservoir. The important parameter to operate the reservoir is turbidity concentration of flow into dam, in the second part the suspended
sediment concentration was predicted by real time therefore the reservoir operation to release turbid flow will get more efficiency. For last part, in the next future year
sediment yield and water resources on the study area were investigated by extrapolated temperature and rainfall data then the results will be useful for long term reservoir operation system. First part, the integrated sedimentation was used to model an annual depositing
sediment volume in reservoir.
Sediment system in watershed includes not only
sediment yield but also
sediment transportation along the rivers. In this study, the Geographic Information System (GIS) incorporated with
sediment yield model can be assisted to enhance the evaluation estimation of soil erosion. Surface erosion on Managawa river basin is then computed with the Modified Universal Soil Loss Equation (MUSLE) and it is verified to reflect the hydrological processes to which it will be able to estimate soil losses. In the
sediment transport routing module, total load equation is applied to carry
sediment from soil surface erosion to deposit in Managawa dam. According to annual accumulation
sediment volume data in Managawa reservoir during 1981 – 2004, the establish model and simulation results are satisfied. The efficiency of the Modified Universal Equation with
sediment routing in rivers is more than the simple Modified Universal Equation. Second part, the real time suspended
sediment concentration forecasting was used for monitoring the turbidity flow on the upstream of reservoir. The
sediment flow into the reservoir is a factor for decision support in real time reservoir operation therefore the serious area of
sediment erosion of Managawa river basin, Japan is monitored by suspended
sediment gauge. The hourly suspended
sediment concentration at Okumotani station; the upstream of Managawa reservoir, was monitored and estimated by the artificial neural network (ANN) model that the input data were rainfall data and its products. This artificial neural network (ANN) was calibrated and validated by using recently suspended
sediment data on heavy rainfall events from December 2006 to January 2008. Choosing an appropriate neural network structure and providing…
Advisors/Committee Members: 角, 哲也 (advisor), 田村, 武 (advisor), 藤田, 正治 (advisor).
Subjects/Keywords: Sediment Yield;
Sediment Transport;
Sediment Prediction;
Reservoir Sedimentation;
Climate Change
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
CHUTACHINDAKATE, C. (2009). INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION
. (Thesis). Kyoto University. Retrieved from http://hdl.handle.net/2433/85392
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
CHUTACHINDAKATE, CHADIN. “INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION
.” 2009. Thesis, Kyoto University. Accessed October 22, 2018.
http://hdl.handle.net/2433/85392.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
CHUTACHINDAKATE, CHADIN. “INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION
.” 2009. Web. 22 Oct 2018.
Vancouver:
CHUTACHINDAKATE C. INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION
. [Internet] [Thesis]. Kyoto University; 2009. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/2433/85392.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
CHUTACHINDAKATE C. INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION
. [Thesis]. Kyoto University; 2009. Available from: http://hdl.handle.net/2433/85392
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
EPFL
26.
Battisacco, Elena.
Replenishment of sediment downstream of dams: erosion and transport processes.
Degree: 2016, EPFL
URL: http://infoscience.epfl.ch/record/223451
► Dams on rivers alter the sediment continuum, trapping water and sediment in the upstream reservoirs. River reaches downstream are affected by several negative effects, such…
(more)
▼ Dams on rivers alter the
sediment continuum, trapping water and
sediment in the upstream reservoirs. River reaches downstream are affected by several negative effects, such as bed incision, reduction of the river morphological variability, development of an armoured layer and depletion of ecological habitat for fish. The replenishment of
sediment technique has been used since the 1970s to mitigate the lack of
sediment transport in the downstream reaches of dams. The method is mainly used to re-establish a
sediment continuum, restore a natural bed morphology and to recover spawning grounds for fish. Even if both experimental and field tests have been performed in the past, there is still a lack of knowledge regarding the necessary flow released from the bottom outlet of the dam, the amount of
sediment and the configuration of the replenished deposits. This research aims at filling these gaps by means of experimental tests at the Laboratory of Hydraulic Constructions at Ecole Polytechnique Fédérale de Lausanne (EPFL). The main characteristics of an alpine stream were reproduced in a channel facility in terms of grain size distribution, slope and hydraulic conditions. The
sediment replenishment technique was investigated as an influence to the geometrical configurations and volume of deposits, as well as applied discharge. The experiments showed that the bed morphological pattern created by the eroded replenishment material was linked to the initial geometrical arrangement of the replenishment volumes. When applying parallel configurations of replenishment volumes, a general bed fining was obtained with material spread over the entire channel width. Alternating replenishment positioning lead, in turn, to the creation of bed morphological patterns. The wavelength of these bed forms was seen to be related to the replenishment length. Both constant discharge and transient flow were investigated. Three submergence conditions of the replenishment were tested: unsubmerged, completely submerged and over-submerged. A complete submergence was optimal to obtain a complete erosion of the volumes with transport of the material along the channel and persistence of the material on the channel bed. Four slopes for the increasing and decreasing limb of triangular-shaped hydrographs, having the same maximum discharge, were tested and the results compared with the constant discharge cases. A discharge having a triangular distribution in time is similar to the operational condition of dams when releasing an artificial flood. Transient flows with steep rising limbs lead to a reduction of 70% of water consumption compared to a constant flow, although achieving the erosion of the replenished material. The application of the complete hydrographs showed to be counter-productive in terms of local effect of the
sediment replenishment. These hydrographs may be useful for reaching longer distance impacts in
sediment replenishment. Lastly, the effect of consecutive replenishment of sediments was investigated. A second replenishment can…
Advisors/Committee Members: Schleiss, Anton, Rodrigues Pereira Da Franca, Mário Jorge.
Subjects/Keywords: sediment continuum; flume experiments; sediment replenishment; sediment transport; hydrograph; river morphology; gravel augmentation
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Battisacco, E. (2016). Replenishment of sediment downstream of dams: erosion and transport processes. (Thesis). EPFL. Retrieved from http://infoscience.epfl.ch/record/223451
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Battisacco, Elena. “Replenishment of sediment downstream of dams: erosion and transport processes.” 2016. Thesis, EPFL. Accessed October 22, 2018.
http://infoscience.epfl.ch/record/223451.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Battisacco, Elena. “Replenishment of sediment downstream of dams: erosion and transport processes.” 2016. Web. 22 Oct 2018.
Vancouver:
Battisacco E. Replenishment of sediment downstream of dams: erosion and transport processes. [Internet] [Thesis]. EPFL; 2016. [cited 2018 Oct 22].
Available from: http://infoscience.epfl.ch/record/223451.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Battisacco E. Replenishment of sediment downstream of dams: erosion and transport processes. [Thesis]. EPFL; 2016. Available from: http://infoscience.epfl.ch/record/223451
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
ETH Zürich
27.
Martín Sanz, Eduardo Javier.
Flow Sediment Interactions in Managed Rivers: Influence on Ecosystem Structure and Function.
Degree: 2017, ETH Zürich
URL: http://hdl.handle.net/20.500.11850/140
► Flow and sediment regimes are two of the main abiotic factors driving riverine ecosystems, interacting at different temporal and spatial scales. These interactions have a…
(more)
▼ Flow and
sediment regimes are two of the main abiotic factors driving riverine ecosystems, interacting at different temporal and spatial scales. These interactions have a strong influence on habitat composition, ecosystem processes and community composition. Nowadays, flow and
sediment regimes are highly altered due to anthropogenic modifications of rivers and floodplains, such as dams or river channelization, which disrupt the main properties of both regimes.
The primary goal of this thesis was to understand the role of flow and
sediment interactions on ecosystem structure and function in managed rivers and evaluate different techniques that mitigate the impact of rivers regulation. Hyporheic
sediment respiration, periphyton biomass and chlorophyll-a were used as indicators of ecosystem function, whereas macroinvertebrates assemblages were used as a structural indicator.
The first chapter studied the variability of different indicators of ecosystem structure and function under different flow and geomorphology conditions. The study took place in a section of the river Thur, where a widening restoration was implemented by removing 1 km of lateral protections. This widening section characterized by newly established habitats such as gravel bars is fringed upstream and downstream by channelized sections. Channelized sites showed higher rates of
sediment respiration, periphyton and macroinvertebrates compared to restored sites. Restored sites showed a greater temporal and spatial variability in the measured indicators due to the influence of flow disturbance, which was lower in channelized sites. Overall,
sediment respiration and macroinvertebrate richness were related to flow variability and geomorphology, whereas periphyton and macroinvertebrate density was influenced mainly by flow variability.
The second chapter investigated the influence of flow regulation (residual flows and hydropeaking) on aquatic life stages that can persist in sediments during dry phases (i.e. macroinvertebrate seedbanks). Gravel bars affected by hydropeaking showed greater densities of organisms due to the high frequency of inundations, which increased the drift of animals onto gravel bars. The opposite trend was found in residual flow rivers, where there is a lack of flood occurrence.
The third chapter assessed the ecological impact of a
Sediment Bypass Tunnel, a structure that routes upstream
sediment input around dams, reducing the accumulation of sediments in the dam. Operations of the tunnel create a general decrease in measured indicators (
sediment respiration, periphyton and macroinvertebrates), the decrease being related to the magnitude of flow and
sediment released at the tunnel.
The fourth chapter described the interactions of flow and
sediment inputs in two rivers with contrasting management programs (experimental floods and
sediment bypass tunnel).
Sediment lateral inputs caused local interactions with flow, generating morphological and biotic heterogeneity in the streambed, whereas upstream
sediment inputs…
Advisors/Committee Members: Robinson, Christopher T., Jokela, Jukka, Jähnig, Sonja.
Subjects/Keywords: Flow regime; Sediment regime; Macroinvertebrates; Reservoirs; Enviromental Impact; Sediment Respiration; Sediment Bypass Tunnel
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Martín Sanz, E. J. (2017). Flow Sediment Interactions in Managed Rivers: Influence on Ecosystem Structure and Function. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/140
Chicago Manual of Style (16th Edition):
Martín Sanz, Eduardo Javier. “Flow Sediment Interactions in Managed Rivers: Influence on Ecosystem Structure and Function.” 2017. Doctoral Dissertation, ETH Zürich. Accessed October 22, 2018.
http://hdl.handle.net/20.500.11850/140.
MLA Handbook (7th Edition):
Martín Sanz, Eduardo Javier. “Flow Sediment Interactions in Managed Rivers: Influence on Ecosystem Structure and Function.” 2017. Web. 22 Oct 2018.
Vancouver:
Martín Sanz EJ. Flow Sediment Interactions in Managed Rivers: Influence on Ecosystem Structure and Function. [Internet] [Doctoral dissertation]. ETH Zürich; 2017. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/20.500.11850/140.
Council of Science Editors:
Martín Sanz EJ. Flow Sediment Interactions in Managed Rivers: Influence on Ecosystem Structure and Function. [Doctoral Dissertation]. ETH Zürich; 2017. Available from: http://hdl.handle.net/20.500.11850/140
University of Georgia
28.
Martin, John Kirkwood.
Sediment flux and storage in a southeastern piedmont river system.
Degree: MS, Forest Resources, 2001, University of Georgia
URL: http://purl.galileo.usg.edu/uga_etd/martin_john_k_200108_ms
► A sediment budget was developed for a representative rural southeastern Piedmont watershed to provide information on the relative importance of sediment sources. Sediment is the…
(more)
▼ A
sediment budget was developed for a representative rural southeastern Piedmont watershed to provide information on the relative importance of
sediment sources.
Sediment is the single most important water quality problem and the largest contributor by volume of Non Point Source Pollution (NPSP) in the United States (Neary et al.), and Georgia is currently required by court order to develop
sediment Total Maximum Daily Loads (TMDLs) for several of the states' waterways that are not meeting designated uses. One way to evaluate the relative contribution of various land use activities to total
sediment load is to calculate a basin wide
sediment budget. This project attempts to evaluate relative contributions of
sediment by estimating storage, export and contributions of
sediment from various sources. Results indicate, when compared to stored historical
sediment, relative contributions of
sediment from silvilcultural activities is minimal. To allocate equitable TMDLs for various industries this stored historical
sediment must be considered.
Advisors/Committee Members: C. Rhett Jackson.
Subjects/Keywords: Sediment Budget
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Martin, J. K. (2001). Sediment flux and storage in a southeastern piedmont river system. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/martin_john_k_200108_ms
Chicago Manual of Style (16th Edition):
Martin, John Kirkwood. “Sediment flux and storage in a southeastern piedmont river system.” 2001. Masters Thesis, University of Georgia. Accessed October 22, 2018.
http://purl.galileo.usg.edu/uga_etd/martin_john_k_200108_ms.
MLA Handbook (7th Edition):
Martin, John Kirkwood. “Sediment flux and storage in a southeastern piedmont river system.” 2001. Web. 22 Oct 2018.
Vancouver:
Martin JK. Sediment flux and storage in a southeastern piedmont river system. [Internet] [Masters thesis]. University of Georgia; 2001. [cited 2018 Oct 22].
Available from: http://purl.galileo.usg.edu/uga_etd/martin_john_k_200108_ms.
Council of Science Editors:
Martin JK. Sediment flux and storage in a southeastern piedmont river system. [Masters Thesis]. University of Georgia; 2001. Available from: http://purl.galileo.usg.edu/uga_etd/martin_john_k_200108_ms
University of British Columbia
29.
Tunnicliffe, Jon Francis.
Holocene sedimentary history of Chilliwack Valley, Northern Cascade Mountains
.
Degree: 2008, University of British Columbia
URL: http://hdl.handle.net/2429/526
► I seek to reconstruct the balance between sediment storage and yield across multiple drainage basin scales in a large (1 230 km2) watershed in the…
(more)
▼ I seek to reconstruct the balance between sediment storage and yield across multiple drainage basin scales in a large (1 230 km2) watershed in the Northern Cascade range, British Columbia and Washington. Chilliwack Valley and surrounding area has been the site of numerous studies that have detailed much of its Quaternary sedimentary history. In the present study this information is supplemented by reconstruction of the morphodynamic trajectory of the river valley though the Holocene Epoch, and development of a sediment transfer model that describes the relaxation from the Fraser glaciation. The total Holocene sediment yield is estimated from basins across several scales using field and remotely sensed evidence to constrain the historical mass balance of delivery to higher order tributary basins. Rates of hillslope erosion are estimated using a diffusion-based relation for open slopes and delimitating the volume evacuated from major gully sources. Digital terrain models of paleo-surfaces are constructed to calculate total sediment erosion and deposition from tributary valleys and the mainstem. Chilliwack Lake has effectively trapped the entire post-glacial sediment load from the upper catchment (area = 334 km2), allowing to compare this "nested" system with the larger catchment. Rates of lake sediment accumulation are estimated using sediment cores and paleomagnetism. These are compared with accumulation rates in the terminal fan inferred from radiocarbon dating of fossil material, obtained by sonic drilling in the apex gravels. A sediment budget framework is then used to summarize the net transfer of weathered material and glacial sediments from the hillslope scale to the mainstem. The long-term average sediment yield from the upper basin is 62 +/- 9 t/km2/yr; contemporary yield is approximately 30 t/km2/yr. It is found that only 10-15% of the material eroded from the hillslopes is delivered to mouths of the major tributaries; the remaining material is stored at the base of footslopes and within the fluvial sedimentary system. Since the retreat of Fraser Ice from the mouth of the valley, Chilliwack River delivered over 1.8 +/- 0.21 km3 of gravel and sand to Vedder Fan in the Fraser Valley. In the sediment budget developed here, roughly 85% of that material is attributed to glacial sources, notably the Ryder Uplands and glacial valley fills deposited along the mainstem, upstream of Tamihi Creek. In tributary valleys, local base-level has fallen, leading to the evacuation of deep glacial sedimentary fills. Many of the lower reaches of major tributaries in upper Chilliwack Valley (e.g. Centre and Nesakwatch Creeks) remain primarily sediment sinks for slope-derived inputs, since base-level fall has not been initiated. In distal tributaries (Liumchen, Tamihi and Slesse creeks), paraglacial fans have been incised or completely eroded, entrained by laterally active channels. A transition from transport-limited to supply-limited conditions has been effected in many of these reaches. Slesse Creek has struck an intermediate…
Subjects/Keywords: Fluvial geomorphology;
Sediment transport models
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tunnicliffe, J. F. (2008). Holocene sedimentary history of Chilliwack Valley, Northern Cascade Mountains
. (Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/526
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Tunnicliffe, Jon Francis. “Holocene sedimentary history of Chilliwack Valley, Northern Cascade Mountains
.” 2008. Thesis, University of British Columbia. Accessed October 22, 2018.
http://hdl.handle.net/2429/526.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Tunnicliffe, Jon Francis. “Holocene sedimentary history of Chilliwack Valley, Northern Cascade Mountains
.” 2008. Web. 22 Oct 2018.
Vancouver:
Tunnicliffe JF. Holocene sedimentary history of Chilliwack Valley, Northern Cascade Mountains
. [Internet] [Thesis]. University of British Columbia; 2008. [cited 2018 Oct 22].
Available from: http://hdl.handle.net/2429/526.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Tunnicliffe JF. Holocene sedimentary history of Chilliwack Valley, Northern Cascade Mountains
. [Thesis]. University of British Columbia; 2008. Available from: http://hdl.handle.net/2429/526
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Wollongong
30.
Strom, David.
Development of a robust sediment quality guideline for copper.
Degree: PhD, Department of Chemistry, 2011, University of Wollongong
URL: ;
http://ro.uow.edu.au/theses/3369
► Sediments have been recognised as an important source and repository for many contaminants that enter the aquatic environment. In addition to influencing surface water…
(more)
▼ Sediments have been recognised as an important source and repository for many contaminants that enter the aquatic environment. In addition to influencing surface water quality, contaminated sediments also represent a potential hazard to benthic biota and the aquatic food chain. Accurately defining the extent of environmental risk posed by sediment-associated contaminants is becoming an important priority for regulators and industries worldwide.
Sediment quality guidelines (SQGs) are intended to delineate between sediments that cause adverse biological effects and those which do not. In the case of metals, however, an absence of toxicity is frequently observed in sediments with metal concentrations many times greater than the SQG trigger values. Factors that modify metal partitioning between dissolved and particulate phases in sediments (e.g. particle size, organic carbon, sulfide, pH) and thereby influence metal bioavailability and toxicity are believed to be responsible for the disparity. Further, the significance of exposure pathways (dietary particle ingestion and dissolved metal uptake) to a range of representative benthic organisms must also be understood to derive SQGs that offer protection for a full range of organism behaviours and benthic habitats.
Laboratory-based experimentation was undertaken to assess the sensitivity of benthic organisms to copper in sediments and the appropriateness of current SQGs for copper. Detailed information was obtained on the equilibration of copper-spiked sediments and the influence of sediment properties on the partitioning of copper between different sediment compartments (solid phases and dissolved copper in the pore water and overlying water) before and during tests. The research focused primarily on acute toxicity to sediment-dwelling estuarine and marine organisms, including the epibenthic amphipod, Melita plumulosa and the bivalve, Spisula trigonella, for numerous sediments with varying metal-binding properties.
The 10-day acute EC50s of the particle-ingesting amphipod varied from 200 to 20,000 mg/kg for sediments with copper-binding affinities ranging from low (sandy) to very high (mineralised). Similar patterns of acute toxicity across the varying sediment types were observed for the bivalve, despite having a dissolved metal uptake exposure pathway. Of the factors expected to influence copper binding, elevated acid-volatile sulfide, was demonstrated to temporarily ameliorate the bioavailability of copper, and sediment pH had a minor effect on dissolved copper toxicity. Far more influential were the sediment particle size and organic carbon content. Concentration-response relationships based on the total particulate copper and organic carbon (POC) concentrations of the less than 63 μm sediment fraction effectively normalised the influence of sediment properties on the measured copper effects threshold for all sediment-types tested. Acute and chronic effect thresholds were derived (14 and 3.6 mg Cu/g POC, respectively) using a…
Subjects/Keywords: sediment; copper; bioavailability; guidelines
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Strom, D. (2011). Development of a robust sediment quality guideline for copper. (Doctoral Dissertation). University of Wollongong. Retrieved from ; http://ro.uow.edu.au/theses/3369
Chicago Manual of Style (16th Edition):
Strom, David. “Development of a robust sediment quality guideline for copper.” 2011. Doctoral Dissertation, University of Wollongong. Accessed October 22, 2018.
; http://ro.uow.edu.au/theses/3369.
MLA Handbook (7th Edition):
Strom, David. “Development of a robust sediment quality guideline for copper.” 2011. Web. 22 Oct 2018.
Vancouver:
Strom D. Development of a robust sediment quality guideline for copper. [Internet] [Doctoral dissertation]. University of Wollongong; 2011. [cited 2018 Oct 22].
Available from: ; http://ro.uow.edu.au/theses/3369.
Council of Science Editors:
Strom D. Development of a robust sediment quality guideline for copper. [Doctoral Dissertation]. University of Wollongong; 2011. Available from: ; http://ro.uow.edu.au/theses/3369
◁ [1] [2] [3] [4] [5] … [92] ▶
. 
Open Access Theses and Dissertations
