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You searched for subject:(Floodplain sedimentation). Showing records 1 – 2 of 2 total matches.

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1. Reminga, Katy Nicole. Historical Land Use Influence on Fine-Grained Sedimentation in Channel and Floodplain Deposits in a Forested Missouri Ozark Watershed.

Degree: MSin Geospatial Sciences, Geography, Geology, and Planning, 2019, Missouri State University

Hydrologic disturbances due to land use and climate effects can disrupt river form and increase sediment transport. Ozark streams have been experiencing the effects of accelerated channel erosion on coarse sediment delivery and gravel bar deposition since the onset of early European settlement in the late 1800’s. Little attention has focused on understanding the fate of fine-grained sediment released by upland soil and headwater channel erosion and the potential for storage as legacy deposits on floodplains. Legacy deposits are attributed to human disturbances as the result of land clearing and agriculture that increase runoff, soil erosion, flooding, and sediment supply in watersheds. Big Barren Creek (BBC) watershed (191 km2) drains the Salem Plateau in the Ozark Highlands in south eastern Missouri. The watershed was heavily logged between 1880 and 1920 and stream channelization practices on farmland in the area began as early as 1950. Today about ¾ of the watershed area is within the Mark Twain National Forest. This study assesses the occurrence of fine-grained alluvial deposits along BBC and its tributaries and characterizes the spatial distribution and history of legacy sedimentation on alluvial landforms. There were four conclusions: (i) Fine-grained legacy deposits occur in BBC and are distributed non-uniformly upon channel, floodplains, and terrace landforms; (ii) Rates of post-settlement deposition from 1890-1950 were highest in upper BBC (~0.45 cm/yr) where the effects of historical timber harvest were most prevalent and decreased downstream to 0.29 cm/yr in middle BBC; (iii) Rates of post-1950 sedimentation were highest in lower BBC (~0.80 cm/yr) due to increased sediment supply from upstream head-cutting, channelization, and lateral bank erosion in disturbance zones; and (iv) In response to human-induced watershed disturbance, BBC has generally undergone a transition from a multi-threaded channel to a single channel form over the past century. Advisors/Committee Members: Robert Pavlowsky.

Subjects/Keywords: legacy sediment; disturbance; fluvial geomorphology; sedimentation rates; cesium-137; buried a-horizon; buried root crown dendrochronology; floodplain; Geology; Geomorphology

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Reminga, K. N. (2019). Historical Land Use Influence on Fine-Grained Sedimentation in Channel and Floodplain Deposits in a Forested Missouri Ozark Watershed. (Masters Thesis). Missouri State University. Retrieved from https://bearworks.missouristate.edu/theses/3434

Chicago Manual of Style (16th Edition):

Reminga, Katy Nicole. “Historical Land Use Influence on Fine-Grained Sedimentation in Channel and Floodplain Deposits in a Forested Missouri Ozark Watershed.” 2019. Masters Thesis, Missouri State University. Accessed December 01, 2020. https://bearworks.missouristate.edu/theses/3434.

MLA Handbook (7th Edition):

Reminga, Katy Nicole. “Historical Land Use Influence on Fine-Grained Sedimentation in Channel and Floodplain Deposits in a Forested Missouri Ozark Watershed.” 2019. Web. 01 Dec 2020.

Vancouver:

Reminga KN. Historical Land Use Influence on Fine-Grained Sedimentation in Channel and Floodplain Deposits in a Forested Missouri Ozark Watershed. [Internet] [Masters thesis]. Missouri State University; 2019. [cited 2020 Dec 01]. Available from: https://bearworks.missouristate.edu/theses/3434.

Council of Science Editors:

Reminga KN. Historical Land Use Influence on Fine-Grained Sedimentation in Channel and Floodplain Deposits in a Forested Missouri Ozark Watershed. [Masters Thesis]. Missouri State University; 2019. Available from: https://bearworks.missouristate.edu/theses/3434

2. van Denderen, Robert Pepijn. Side channel dynamics.

Degree: 2019, University of Twente

Side channels are commonly constructed to increase the discharge capacity of a river during peak flow conditions or to increase the ecological value of the river. Observations show that large aggradation occurs in the side channels. Therefore, such channels require regular and costly maintenance. The aim of this research is to better understand the mechanisms that drive the morphodynamic development of side channels and thereby, improve the design of side channels and reduce their maintenance needs. We studied the development of side channel in various ways and found that mechanisms such as a length difference between the downstream channels, sediment sorting at the bifurcation and varying hydrodynamic conditions have a large effect on the morphodynamic development of a side channel system. The mechanisms that are important are not the same for each side channel and can vary in time. Therefore, we propose three categories of side channel based on how the sediment that is deposited in the side channel is transported in the main channel: (1) bed load supplied, (2) suspended bed-material load supplied and (3) wash load supplied side channels. These categories can help in determining the main mechanisms that affect the development of a side channel system. In addition, we propose a method based on the categorization that can aid the design, operation and maintenance of side channels. Advisors/Committee Members: Hulscher, Suzanne J.M.H., Schielen, Ralph Mathias Johannes, Marine and Fluvial Systems.

Subjects/Keywords: Side channel; Bifurcation; Morphodynamic modelling; River morphodynamics; Bifurcation sediment sorting; Floodplain sedimentation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

van Denderen, R. P. (2019). Side channel dynamics. (Doctoral Dissertation). University of Twente. Retrieved from https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; 972ad003-f084-4ac3-84a0-cf33e150c32c ; 10.3990/1.9789036547437 ; urn:isbn:978-90-365-4743-7 ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html

Chicago Manual of Style (16th Edition):

van Denderen, Robert Pepijn. “Side channel dynamics.” 2019. Doctoral Dissertation, University of Twente. Accessed December 01, 2020. https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; 972ad003-f084-4ac3-84a0-cf33e150c32c ; 10.3990/1.9789036547437 ; urn:isbn:978-90-365-4743-7 ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html.

MLA Handbook (7th Edition):

van Denderen, Robert Pepijn. “Side channel dynamics.” 2019. Web. 01 Dec 2020.

Vancouver:

van Denderen RP. Side channel dynamics. [Internet] [Doctoral dissertation]. University of Twente; 2019. [cited 2020 Dec 01]. Available from: https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; 972ad003-f084-4ac3-84a0-cf33e150c32c ; 10.3990/1.9789036547437 ; urn:isbn:978-90-365-4743-7 ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html.

Council of Science Editors:

van Denderen RP. Side channel dynamics. [Doctoral Dissertation]. University of Twente; 2019. Available from: https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; 972ad003-f084-4ac3-84a0-cf33e150c32c ; 10.3990/1.9789036547437 ; urn:isbn:978-90-365-4743-7 ; urn:nbn:nl:ui:28-972ad003-f084-4ac3-84a0-cf33e150c32c ; https://research.utwente.nl/en/publications/side-channel-dynamics(972ad003-f084-4ac3-84a0-cf33e150c32c).html

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