subject:(Dune)

University of Pretoria

1. [No author]. Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats .

Degree: 2011, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-10212009-145646/

► The seed bank dynamics of five habitats as well as a grazing gradient in the southwestern Kalahari, South Africa were studied. Soil samples were collected… (more)

▼ The seed bank dynamics of five habitats as well as a grazing gradient in the southwestern Kalahari, South Africa were studied. Soil samples were collected in the following habitats: dune crests, dune slopes, dune streets, a calcrete outcrop and a riverbed on the farm Alpha. Soil samples were also collected along a grazing gradient from a watering point. Three methods of soil seed bank analysis were used to analyse the soil samples and to gain insight into soil seed bank response to habitat type and to grazing pressure, over four seasons in the year 2004. Results from the three methods of analysis were also compared to each other. They included the direct seedling germination method, the seedling germination re-examination and the seed extraction method. These analyses were used to (a) estimate seed bank size and composition in response to habitat type and grazing pressure; (b) the differences between the standing vegetation- and the seed bank-flora in different habitats and along a grazing gradient and (c) the type of seed banks that tend to form in certain habitats and in response to grazing pressure. Analyses of soil seed bank size along a grazing gradient showed that the seedling emergence re-examinations estimated a larger size for the seed bank than the direct seedling emergence method. The seed extraction method estimated a significantly larger seed bank size than the other two methods. Heavy grazing pressure favoured annual/opportunistic species such as Schmidtia kalahariensis, which formed very large seed banks in heavily trampled areas. When Schmidtia kalahariensis data was removed from the seed bank analyses, it was found that, in contrast to previous results, the direct germination method mostly estimated a larger seed bank size than the re-examination. Also, the estimation of seed bank size by the flotation method, in this case, was much smaller. The flotation method produced data mostly for hard-seeded species, while the seedling emergence method produced data for species with small seeds and which were readily germinable. In all seasons, the dune crest habitat always had the smallest seed bank and the riverbed habitat always had the largest seed bank. All the dune habitats were characterised by perennial grasses. Perennial grasses formed transient seed banks which were relatively small. The riverbed habitat’s vegetation was mostly composed of annuals. Annual plants formed persistent seed banks which were relatively large. Species richness of the readily germinable seed bank in all habitats, fluctuated between the four seasons and was usually largest in summer. The difference in species richness between the above- and belowground floras fluctuated over four seasons. The dune habitats showed a large difference between the species richness of the above- and the below-ground flora, while the riverbed habitat showed a much smaller difference. The dune habitats had many species with transient seed banks while the riverbed was characterised by many species with short-term persistent and ‘permanent’ seed banks. Advisors/Committee Members: Prof M W van Rooyen (advisor).

Subjects/Keywords: Riverbed; Calcrete outcrop; Dune streets; Dune slopes; Dune crests; Kalahari ecosystem; Chemical manufactures; UCTD

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APA (6^th Edition):

author], [. (2011). Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-10212009-145646/

Chicago Manual of Style (16^th Edition):

author], [No. “Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats .” 2011. Masters Thesis, University of Pretoria. Accessed March 03, 2021. http://upetd.up.ac.za/thesis/available/etd-10212009-145646/.

MLA Handbook (7^th Edition):

author], [No. “Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats .” 2011. Web. 03 Mar 2021.

Vancouver:

author] [. Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats . [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2021 Mar 03]. Available from: http://upetd.up.ac.za/thesis/available/etd-10212009-145646/.

Council of Science Editors:

author] [. Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats . [Masters Thesis]. University of Pretoria; 2011. Available from: http://upetd.up.ac.za/thesis/available/etd-10212009-145646/

University of Pretoria

2. Johannsmeier, Anne Elisabeth. Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats.

Degree: Plant Science, 2011, University of Pretoria

URL: http://hdl.handle.net/2263/28892

► The seed bank dynamics of five habitats as well as a grazing gradient in the southwestern Kalahari, South Africa were studied. Soil samples were collected… (more)

▼ The seed bank dynamics of five habitats as well as a grazing gradient in the southwestern Kalahari, South Africa were studied. Soil samples were collected in the following habitats: dune crests, dune slopes, dune streets, a calcrete outcrop and a riverbed on the farm Alpha. Soil samples were also collected along a grazing gradient from a watering point. Three methods of soil seed bank analysis were used to analyse the soil samples and to gain insight into soil seed bank response to habitat type and to grazing pressure, over four seasons in the year 2004. Results from the three methods of analysis were also compared to each other. They included the direct seedling germination method, the seedling germination re-examination and the seed extraction method. These analyses were used to (a) estimate seed bank size and composition in response to habitat type and grazing pressure; (b) the differences between the standing vegetation- and the seed bank-flora in different habitats and along a grazing gradient and (c) the type of seed banks that tend to form in certain habitats and in response to grazing pressure. Analyses of soil seed bank size along a grazing gradient showed that the seedling emergence re-examinations estimated a larger size for the seed bank than the direct seedling emergence method. The seed extraction method estimated a significantly larger seed bank size than the other two methods. Heavy grazing pressure favoured annual/opportunistic species such as Schmidtia kalahariensis, which formed very large seed banks in heavily trampled areas. When Schmidtia kalahariensis data was removed from the seed bank analyses, it was found that, in contrast to previous results, the direct germination method mostly estimated a larger seed bank size than the re-examination. Also, the estimation of seed bank size by the flotation method, in this case, was much smaller. The flotation method produced data mostly for hard-seeded species, while the seedling emergence method produced data for species with small seeds and which were readily germinable. In all seasons, the dune crest habitat always had the smallest seed bank and the riverbed habitat always had the largest seed bank. All the dune habitats were characterised by perennial grasses. Perennial grasses formed transient seed banks which were relatively small. The riverbed habitat’s vegetation was mostly composed of annuals. Annual plants formed persistent seed banks which were relatively large. Species richness of the readily germinable seed bank in all habitats, fluctuated between the four seasons and was usually largest in summer. The difference in species richness between the above- and belowground floras fluctuated over four seasons. The dune habitats showed a large difference between the species richness of the above- and the below-ground flora, while the riverbed habitat showed a much smaller difference. The dune habitats had many species with transient seed banks while the riverbed was characterised by many species with short-term persistent and ‘permanent’ seed banks. Advisors/Committee Members: Prof M W van Rooyen (advisor).

Subjects/Keywords: Riverbed; Calcrete outcrop; Dune streets; Dune slopes; Dune crests; Kalahari ecosystem; Chemical manufactures; UCTD

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APA (6^th Edition):

Johannsmeier, A. (2011). Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/28892

Chicago Manual of Style (16^th Edition):

Johannsmeier, Anne. “Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats.” 2011. Masters Thesis, University of Pretoria. Accessed March 03, 2021. http://hdl.handle.net/2263/28892.

MLA Handbook (7^th Edition):

Johannsmeier, Anne. “Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats.” 2011. Web. 03 Mar 2021.

Vancouver:

Johannsmeier A. Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats. [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/2263/28892.

Council of Science Editors:

Johannsmeier A. Seed bank strategies in a Kalahari ecosystem in relation to grazing and habitats. [Masters Thesis]. University of Pretoria; 2011. Available from: http://hdl.handle.net/2263/28892

Delft University of Technology

3. Bitaki, Argyro (author). Estimating future coastline changes along Holland coast, under different sea level rise scenarios, using a probabilistic approach.

Degree: 2019, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:2d30c4f1-32ed-43e0-a0e0-cce7e18d2b1c

► <p class="MsoNormal">Due to climate change and sea level risethe coastal zones are getting exposed to increasing risks like coastalrecession, putting in risk human lives and… (more)

▼ <p class="MsoNormal">Due to climate change and sea level risethe coastal zones are getting exposed to increasing risks like coastalrecession, putting in risk human lives and coastal infrastructure being worthbillions of dollars. Low lying countries like the Netherlands are consideredmore vulnerable to the effects of sea level rise. Large parts of the Dutchcoast have been eroding for centuries and nourishments schemes of approximately12 million m³ have been implemented annually in order to maintainthe coastline as it was in 1990. However, the future dune erosion will further increasedue to the impacts of climate change and hence the adaptation strategies shouldbe in line with the accelerated sea level rise and the possible effects thatmay bring. The most commonly used method to assess sealevel rise impacts on shorelines is the Bruun rule. However,Bruun rule’s deterministic nature cannot align with the risk-based framework thatcoastal zone management requires nowadays. This necessity initiated thedevelopment of a process-based model, the Probabilistic Coastline Recession(PCR) model, estimating the future coastal recessions in a probabilisticapproach. In this research, the PCR framework wasapplied at eleven locations along the Holland coast, in the Netherlands, underthree different SLR scenarios, the RCP4.5, RCP8.5 and Deltascenario. The availabilityof coastal profile data (from 1965 until now) and coastline position data (from1843 till 1980) made the Holland coast an ideal location to explore and extendthe applicability of the PCR framework. The most relevant assumptions for thiscoast were identified and explored. The recovery rate of the dune was a weakpoint of the PCR model and Holland coast was an interesting area to be tested.Three approaches of calibrating the natural recovery rate of the dunes werefollowed. In addition, the alongshore sediment transport which was assumednegligible to the previous case studies, in this work it was integrated intothe PCR model and pointed out that its contribution is important to the PCR. For the eleven selected coastal profiles,20,000 simulations of 81 years (2020-2100) have been conducted and for everysimulation the most landward position of the coastline in every calendar yearhas been recorded. Hence, an empirical distribution of coastline recession forevery future year has been constructed. The ranges of the expected retreats in2100 (relative to 2020) for the different SLR scenarios are:0.5 m-155 m (for RCP4.5), 6 m-194 m (for RCP8.5) and18 m-172 m (for Deltascenario), corresponding to the 50 %exceedance probability values of the cumulative distribution function of thecoastline retreat. The average values of the coastal retreat for 2100 are 61 m,73 m and 97 m for RCP4.5, RCP 8.5, and Deltascenario respectively.The relevant average erosion volume by 2100 are 1664 m³/m,2005 m³/m and 2665 m³/m. According to thefindings, in 2100 the relative increase in volume loss along the entire theHolland coast is expected to be 95 %, 121 % and 173… Advisors/Committee Members: de Vries, Sierd (mentor), Metrikine, Andrei (mentor), de Boer, Wiebe (mentor), Scheel, Freek (mentor), Ranasinghe, Roshanka (mentor), Dastgheib, Ali (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: dune erosion; PCR; coastline change

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APA (6^th Edition):

Bitaki, A. (. (2019). Estimating future coastline changes along Holland coast, under different sea level rise scenarios, using a probabilistic approach. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:2d30c4f1-32ed-43e0-a0e0-cce7e18d2b1c

Chicago Manual of Style (16^th Edition):

Bitaki, Argyro (author). “Estimating future coastline changes along Holland coast, under different sea level rise scenarios, using a probabilistic approach.” 2019. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:2d30c4f1-32ed-43e0-a0e0-cce7e18d2b1c.

MLA Handbook (7^th Edition):

Bitaki, Argyro (author). “Estimating future coastline changes along Holland coast, under different sea level rise scenarios, using a probabilistic approach.” 2019. Web. 03 Mar 2021.

Vancouver:

Bitaki A(. Estimating future coastline changes along Holland coast, under different sea level rise scenarios, using a probabilistic approach. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:2d30c4f1-32ed-43e0-a0e0-cce7e18d2b1c.

Council of Science Editors:

Bitaki A(. Estimating future coastline changes along Holland coast, under different sea level rise scenarios, using a probabilistic approach. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:2d30c4f1-32ed-43e0-a0e0-cce7e18d2b1c

University of South Africa

4. Singh, Sanjana. Messiahs and martyrs : religion in selected novels of Frank Herbert's Dune chronicles .

Degree: 2013, University of South Africa

URL: http://hdl.handle.net/10500/11839

► The focus of this dissertation is Frank Herbert‘s use of messiahs and martyrs in selected novels of the Dune Chronicles. I make connections with Herbert‘s… (more)

Subjects/Keywords: Frank Herbert; Dune; Dune messiah; Children of Dune; God emperor of Dune; Messiahs; Martyrs; Religion; Science fiction

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APA (6^th Edition):

Singh, S. (2013). Messiahs and martyrs : religion in selected novels of Frank Herbert's Dune chronicles . (Masters Thesis). University of South Africa. Retrieved from http://hdl.handle.net/10500/11839

Chicago Manual of Style (16^th Edition):

Singh, Sanjana. “Messiahs and martyrs : religion in selected novels of Frank Herbert's Dune chronicles .” 2013. Masters Thesis, University of South Africa. Accessed March 03, 2021. http://hdl.handle.net/10500/11839.

MLA Handbook (7^th Edition):

Singh, Sanjana. “Messiahs and martyrs : religion in selected novels of Frank Herbert's Dune chronicles .” 2013. Web. 03 Mar 2021.

Vancouver:

Singh S. Messiahs and martyrs : religion in selected novels of Frank Herbert's Dune chronicles . [Internet] [Masters thesis]. University of South Africa; 2013. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10500/11839.

Council of Science Editors:

Singh S. Messiahs and martyrs : religion in selected novels of Frank Herbert's Dune chronicles . [Masters Thesis]. University of South Africa; 2013. Available from: http://hdl.handle.net/10500/11839

Delft University of Technology

5. De Vries, B.B. (author). Dune erosion near sea walls; XBeach validation.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:5e790ec1-9a1d-4a8e-b5b2-e11217f43a97

►

During a storm dunes erode and provide sediment to the beach. The foreshore rises and the wave height decreases. Subsequently the wave-induced water level setup… (more)

▼

During a storm dunes erode and provide sediment to the beach. The foreshore rises and the wave height decreases. Subsequently the wave-induced water level setup increases. Seawalls do not erode. The waves in front of the seawall remain high throughout the storm and the wave-induced water level setup hardly changes. Over a dune-dike connection a water level gradient drives a current which transports sediment from the dunes to the seabed in front of the seawall. The loss of sediment to the dike causes the foreshore of dunes near the connection to rise slower resulting in more erosion. The amount of additional erosion near structures depends on the angle of wave incidence w.r.t. the shore. Dunes situated downstream of the connection experience a significant increases in erosion. Near the upstream connection sediment is deposited on the seabed in front of the structure. Sediment will pile up against the structure resulting in less erosion near the connection. The influence of structures on dune erosion was investigated in a series of experiments and were aimed at 4 different connections between a dune and a structure. Two configurations of dunes and structures were investigated with 2 different wave periods. In XBeach the erosion in a dike breach is a function of the breach width and the wave period. The erosion increases for a smaller breach width and an increasing wave period. XBeach underestimates the erosion above the dune revetment. The erosion in the revetment breach is predicted well. For experiments V1 & V3 the predictive capabilities of XBeach in dune sections are very good. The performance of XBeach for experiments V2 & V4 is relatively good. The effect of the wave period for 2DH models with a large depth scale (nd = 60) is not properly simulated by XBeach.

Coastal Morphology

Hydraulic Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Stive, M.J.F. (mentor), Van Dongeren, A.R. (mentor), Van Geer, P.F.C. (mentor), Van Thiel de Vries, J.S.M. (mentor), Smit, P.B. (mentor).

Subjects/Keywords: dune; dike; connection; XBeach; validation

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APA (6^th Edition):

De Vries, B. B. (. (2011). Dune erosion near sea walls; XBeach validation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:5e790ec1-9a1d-4a8e-b5b2-e11217f43a97

Chicago Manual of Style (16^th Edition):

De Vries, B B (author). “Dune erosion near sea walls; XBeach validation.” 2011. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:5e790ec1-9a1d-4a8e-b5b2-e11217f43a97.

MLA Handbook (7^th Edition):

De Vries, B B (author). “Dune erosion near sea walls; XBeach validation.” 2011. Web. 03 Mar 2021.

Vancouver:

De Vries BB(. Dune erosion near sea walls; XBeach validation. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:5e790ec1-9a1d-4a8e-b5b2-e11217f43a97.

Council of Science Editors:

De Vries BB(. Dune erosion near sea walls; XBeach validation. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:5e790ec1-9a1d-4a8e-b5b2-e11217f43a97

Texas A&M University

6. Middlebrook, William David. Three-Dimensional and Multi-Temporal Dune-Field Pattern Analysis in the Olympia Undae Dune Field, Mars.

Degree: MS, Geology, 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/155559

► Fields of sand dunes are ubiquitous in the north polar region of Mars and provide a record of sand transport processes influenced by Mars’ polar… (more)

▼ Fields of sand dunes are ubiquitous in the north polar region of Mars and provide a record of sand transport processes influenced by Mars’ polar climate. Spatial and temporal variations in dunes, ripples, coarse-grained ripples, and exposed dune cross-strata were analyzed in two areas of the Olympia Undae Dune Field in order to assess the influence of the Martian polar boundary conditions on ripple and dune activity and on pattern development. Two- and three-dimensional parameters, including dune crest length, spacing, width, slope, and height, were statistically assessed using regression analysis and descriptive statistics. Sediment fluxes were calculated using Co-registration of Optically Sensed Imagery and Correlation (COSICorr), a program that precisely co-registers and correlates imagery, and by measuring dune displacement. Two-dimensional pattern analysis indicates the co-existence of two populations of dunes that can be interpreted as two generations or as forming simultaneously under sediment availability limited conditions. Three-dimensional pattern analysis shows an asymmetry in slope profiles of the primary dunes and is consistent with primary dunes forming transversely to constructional winds. Four different types of ripple crestline patterns are identified and likely arise due to differences in grain size and dune-modified wind speeds and secondary flow directions. Maximum measured ripple displacement in the center of Olympia Undae study area is ~1.4 m yr^-1 ± 0.13 m. Assuming a mean ripple height of 0.11 m and a 4:1 saltation to reptation ratio, the sediment flux is ~0.42 m³ m^-1 yr^-1. Adjacent to the polar ice cap, barchan dune crest displacements range between 0.25 m yr-1 and 2.80 m yr-1 and dune heights between 11 m and 31 m. Mean sediment flux is 3.5 m³ m-1 yr-1. Results indicate that there is a spatial decay in sediment transport across the field and that fluxes near the cap are comparable to those found in Nili Patera, Mars and Victoria Valley, Antarctica. Overall the polar boundary conditions seasonally limit sand availability by seasonal frost cover and subsurface ice. The polar boundary conditions are most influential at the dune pattern scale, but appear to have little influence on the ripple pattern or ripple mobility. Advisors/Committee Members: Ewing, Ryan C (advisor), Bishop, Michael P (committee member), Houser, Chris (committee member).

Subjects/Keywords: Olympia Undae Dune Field; Dune Field Pattern Analysis

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APA (6^th Edition):

Middlebrook, W. D. (2015). Three-Dimensional and Multi-Temporal Dune-Field Pattern Analysis in the Olympia Undae Dune Field, Mars. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/155559

Chicago Manual of Style (16^th Edition):

Middlebrook, William David. “Three-Dimensional and Multi-Temporal Dune-Field Pattern Analysis in the Olympia Undae Dune Field, Mars.” 2015. Masters Thesis, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/155559.

MLA Handbook (7^th Edition):

Middlebrook, William David. “Three-Dimensional and Multi-Temporal Dune-Field Pattern Analysis in the Olympia Undae Dune Field, Mars.” 2015. Web. 03 Mar 2021.

Vancouver:

Middlebrook WD. Three-Dimensional and Multi-Temporal Dune-Field Pattern Analysis in the Olympia Undae Dune Field, Mars. [Internet] [Masters thesis]. Texas A&M University; 2015. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/155559.

Council of Science Editors:

Middlebrook WD. Three-Dimensional and Multi-Temporal Dune-Field Pattern Analysis in the Olympia Undae Dune Field, Mars. [Masters Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/155559

Delft University of Technology

7. Von Gronau, Clemens (author). Using a process-based model for dune safety assessment: A case study of Delfland with a 2DH XBeach model.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:7de1c88a-074d-466c-a930-2acd69bf917c

►

With the implementation of new legal aspects for dune safety assessment in 2017, the current method, Duros+, is no longer feasible to represent the desired… (more)

Subjects/Keywords: XBeach; safety assessment; dune safety; Coastal Engineering; Delfland; dune; Sand Engine

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APA (6^th Edition):

Von Gronau, C. (. (2017). Using a process-based model for dune safety assessment: A case study of Delfland with a 2DH XBeach model. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7de1c88a-074d-466c-a930-2acd69bf917c

Chicago Manual of Style (16^th Edition):

Von Gronau, Clemens (author). “Using a process-based model for dune safety assessment: A case study of Delfland with a 2DH XBeach model.” 2017. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:7de1c88a-074d-466c-a930-2acd69bf917c.

MLA Handbook (7^th Edition):

Von Gronau, Clemens (author). “Using a process-based model for dune safety assessment: A case study of Delfland with a 2DH XBeach model.” 2017. Web. 03 Mar 2021.

Vancouver:

Von Gronau C(. Using a process-based model for dune safety assessment: A case study of Delfland with a 2DH XBeach model. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:7de1c88a-074d-466c-a930-2acd69bf917c.

Council of Science Editors:

Von Gronau C(. Using a process-based model for dune safety assessment: A case study of Delfland with a 2DH XBeach model. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:7de1c88a-074d-466c-a930-2acd69bf917c

Delft University of Technology

8. Andringa, Lise (author); Eijkelkamp, Timo (author); Grolleman, Thomas (author); Schouten, David (author); Szadkowski, Xavier (author). Multidisciplinary assessment of engineered dunes for West End, Galveston Island, Texas.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:0c9b41bd-a3ec-4cd7-82fe-e21fbddaf7e1

► The United States Army Corps of Engineers (USACE) is scheduled to present their solution for a storm surge barrier on Galveston Island in 2021 to… (more)

▼ The United States Army Corps of Engineers (USACE) is scheduled to present their solution for a storm surge barrier on Galveston Island in 2021 to congress for approval. A solution for an engineered dune system on the Galveston Island West End has been proposed, but storm surge models have shown that protection from this engineered dune only goes so far, moreover the search for a proper alternative that fulfills technical requirements and social political influences have proven to be challenging. This study aimsto assess different dune alternatives, proposed in different reports, with a range of multi disciplinary criteria. The assessment of dune alternatives will also result in guidelines that should be considered for design, maintenance and governance aspects for an engineered dune barrier on Galveston Island, TX. Using a multi disciplinary approach for the evaluation of the different dune alternatives, the following research question was formulated: To what extent do the various dune alternatives fit the requirements for a land barrier at the West End of Galveston Island, looking at both technical and sociopolitical aspects? In this context, technical requirements are defined as the storm surge-and rainfall coping capacities of the dune, i.e. against what kind of storm is the dune resistant. Social political influences are a combination of the perception by local residents that are directly influenced by the construction of a dune system, governmental forms of collaboration, and in provide an analysis of the maintainability of the dune alternatives using the storm surge capacities. The different dune alternatives that have been assessed consist of the dune system proposed by the USACE and GLO (2018), the big dune system proposed by Galvez (2019) and the hybrid dune system as proposed by Muller (2017) and will hereafter be called alternative 1, 2 and 3 respectively. In this report a fourth alternative was introduced which is based on the hybrid dune system by Muller (2017) and consists of a clay core instead of a concrete core. Alternative 4 was chosen in order to simulate the difference between a concrete core and a clay core. Based on XBeach calculations, the storm surge coping capability of each dune was determined by projecting 10 year-, 50 year- and 100 year storms onto the dune alternatives. ArcGIS maps from the Galveston Island allowed for projection of flow patterns on the island in order to determine the rainfall coping capacity. An evaluation of sociopolitical aspects was based on a review of the literature on dune systems, forms of collaboration between governmental and private entities, and interviews with various respondents consisting of private individuals and companies, as well as governmental agencies involved in the process. Analysis of the various dune alternatives, based on multi disciplinary criteria, demonstrated that alternative 1 is completely flattened in 50 year storm events, whereas alternatives 2, 3 and 4 show a good storm surge capacity. All alternatives aggravate the current rainfall… Advisors/Committee Members: Kothuis, Baukje (mentor), Bosch-Rekveldt, Marian (mentor), de Vries, Sierd (mentor), Mostert, Erik (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Multidisciplinary; MCA; Dune design; Dune; Galveston; Erosion; Rainfall estimation

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APA (6^th Edition):

Andringa, Lise (author); Eijkelkamp, Timo (author); Grolleman, Thomas (author); Schouten, David (author); Szadkowski, X. (. (2020). Multidisciplinary assessment of engineered dunes for West End, Galveston Island, Texas. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:0c9b41bd-a3ec-4cd7-82fe-e21fbddaf7e1

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Andringa, Lise (author); Eijkelkamp, Timo (author); Grolleman, Thomas (author); Schouten, David (author); Szadkowski, Xavier (author). “Multidisciplinary assessment of engineered dunes for West End, Galveston Island, Texas.” 2020. Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:0c9b41bd-a3ec-4cd7-82fe-e21fbddaf7e1.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Andringa, Lise (author); Eijkelkamp, Timo (author); Grolleman, Thomas (author); Schouten, David (author); Szadkowski, Xavier (author). “Multidisciplinary assessment of engineered dunes for West End, Galveston Island, Texas.” 2020. Web. 03 Mar 2021.

Vancouver:

Andringa, Lise (author); Eijkelkamp, Timo (author); Grolleman, Thomas (author); Schouten, David (author); Szadkowski X(. Multidisciplinary assessment of engineered dunes for West End, Galveston Island, Texas. [Internet] [Thesis]. Delft University of Technology; 2020. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:0c9b41bd-a3ec-4cd7-82fe-e21fbddaf7e1.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Andringa, Lise (author); Eijkelkamp, Timo (author); Grolleman, Thomas (author); Schouten, David (author); Szadkowski X(. Multidisciplinary assessment of engineered dunes for West End, Galveston Island, Texas. [Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:0c9b41bd-a3ec-4cd7-82fe-e21fbddaf7e1

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

9. Baitis, Elke Elise. Patterns and paleoshorelines of White Sands Dune Field, New Mexico.

Degree: MSin Geological Sciences, Sedimentology, 2011, University of Texas – Austin

URL: http://hdl.handle.net/2152/ETD-UT-2011-05-3354

► The dune field at White Sands, New Mexico, shows a well-defined pattern of dunes and interdune areas, as well as spatial variations in this pattern.… (more)

Subjects/Keywords: Dunes; Dune patterns; White Sands Dune Field; New Mexico; LiDAR; Paleoshorelines

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APA (6^th Edition):

Baitis, E. E. (2011). Patterns and paleoshorelines of White Sands Dune Field, New Mexico. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2011-05-3354

Chicago Manual of Style (16^th Edition):

Baitis, Elke Elise. “Patterns and paleoshorelines of White Sands Dune Field, New Mexico.” 2011. Masters Thesis, University of Texas – Austin. Accessed March 03, 2021. http://hdl.handle.net/2152/ETD-UT-2011-05-3354.

MLA Handbook (7^th Edition):

Baitis, Elke Elise. “Patterns and paleoshorelines of White Sands Dune Field, New Mexico.” 2011. Web. 03 Mar 2021.

Vancouver:

Baitis EE. Patterns and paleoshorelines of White Sands Dune Field, New Mexico. [Internet] [Masters thesis]. University of Texas – Austin; 2011. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/2152/ETD-UT-2011-05-3354.

Council of Science Editors:

Baitis EE. Patterns and paleoshorelines of White Sands Dune Field, New Mexico. [Masters Thesis]. University of Texas – Austin; 2011. Available from: http://hdl.handle.net/2152/ETD-UT-2011-05-3354

Texas A&M University

10. West, Nicholas Allan. Conceptual Design and Physical Model Tests of a Levee-in-Dune Hurricane Barrier.

Degree: MS, Ocean Engineering, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/154154

► In an effort to protect the Greater Houston Metropolitan Area from hurricane storm surge damage, four Levee-in-Dune concepts are studied as part of the Ike… (more)

Subjects/Keywords: Levee in Dune; Levee-in-Dune; LID; Hurricane Barrier; Ike; Ike Dike; Dune Erosion; Coastal Erosion; Hurricane Erosion; Storm Erosion

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APA (6^th Edition):

West, N. A. (2014). Conceptual Design and Physical Model Tests of a Levee-in-Dune Hurricane Barrier. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/154154

Chicago Manual of Style (16^th Edition):

West, Nicholas Allan. “Conceptual Design and Physical Model Tests of a Levee-in-Dune Hurricane Barrier.” 2014. Masters Thesis, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/154154.

MLA Handbook (7^th Edition):

West, Nicholas Allan. “Conceptual Design and Physical Model Tests of a Levee-in-Dune Hurricane Barrier.” 2014. Web. 03 Mar 2021.

Vancouver:

West NA. Conceptual Design and Physical Model Tests of a Levee-in-Dune Hurricane Barrier. [Internet] [Masters thesis]. Texas A&M University; 2014. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/154154.

Council of Science Editors:

West NA. Conceptual Design and Physical Model Tests of a Levee-in-Dune Hurricane Barrier. [Masters Thesis]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/154154

University of Texas – Austin

11. Brothers, Sarah Christian. Aeolian dune dynamics and the stratigraphic record.

Degree: PhD, Geological Sciences, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/46365

► Dunes and dune fields are dynamic features that respond to the unique boundary conditions under which they evolve by changing migration habits, types and frequencies… (more)

▼ Dunes and dune fields are dynamic features that respond to the unique boundary conditions under which they evolve by changing migration habits, types and frequencies of interactions, and morphologies. As such, dunes convey information about changing atmospheric and surface conditions on planetary bodies including Earth, Mars, Venus, and Titan, and the stratigraphic record left by these bedforms is used to interpret the evolution of paleoclimate and surface environments. In four parts this work examines how the dynamics of individual dunes, dune fields, and aeolian systems influence stratigraphic architectures across multiple spatial scales. At White Sands Dune Field, New Mexico, the decadal histories of defect and bedform repulsion-type interactions are traced through a time-series of images. The resultant stratigraphic architectures are derived from plan-view exposures and ground penetrating radar sensing of dune interiors. This is the first documentation of the unique stratigraphic architectures that result from interactions between dunes. Within Chasma Boreale, Planum Boreum, Mars, boundary conditions controlling the discrete geomorphic expressions of the Hyperboreae Undae dune fields are evaluated using morphologic distributions. The distributions reveal that dune field expressions change over short horizontal scales and are dependent upon wind regime and sediment state, which operate under the background condition of dune induration by ice. Hyperboreae Undae form only part of the Chasma Boreale sediment system, however. Perennial layered ice deposits also are present on the floor of the reentrant. The changing balance of ice- and sand-dominated processes in space and time have resulted in an accumulation that transitions between ancient aeolian cavi unit-style accumulation and modern layered ice deposit-style accumulation. These accumulations can be interpreted through aeolian sequence stratigraphy. Findings from the Chasma Boreale transitional sediment system are applied to nearby outcrops of a transitional section of ancient cavi unit, which formed in an environment analogous to the modern Chasma Boreale sediment system. A sequence interpretation of the transitional cavi unit stratigraphic succession demonstrates how the aeolian system transitioned into overlying water ice deposits without a gap in the geologic record, verifying that the cavi unit and NPLD should be unified under a sequence stratigraphic framework. Advisors/Committee Members: Kocurek, Gary (advisor), Byrne, Shane (committee member), Hern, Caroline (committee member), Holt, John (committee member), Mohrig, David (committee member).

Subjects/Keywords: Dunes; Stratigraphy; White Sands Dune Field; New Mexico; Dune dynamics; Dune interactions; Mars; Planum Boreum; Cavi unit; Aeolian sequence stratigraphy

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APA (6^th Edition):

Brothers, S. C. (2016). Aeolian dune dynamics and the stratigraphic record. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46365

Chicago Manual of Style (16^th Edition):

Brothers, Sarah Christian. “Aeolian dune dynamics and the stratigraphic record.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed March 03, 2021. http://hdl.handle.net/2152/46365.

MLA Handbook (7^th Edition):

Brothers, Sarah Christian. “Aeolian dune dynamics and the stratigraphic record.” 2016. Web. 03 Mar 2021.

Vancouver:

Brothers SC. Aeolian dune dynamics and the stratigraphic record. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/2152/46365.

Council of Science Editors:

Brothers SC. Aeolian dune dynamics and the stratigraphic record. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/46365

Texas A&M University

12. Furman, Matthew Robbins. Dune Plant Biophysical Traits and Their Impacts on Erosion.

Degree: MS, Ecosystem Science and Management, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/157760

► Increasing frequency and severity of storms has translated into a greater interest in coastal protection, due to fears of storm damage to homes and communities.… (more)

▼ Increasing frequency and severity of storms has translated into a greater interest in coastal protection, due to fears of storm damage to homes and communities. In the past, communities used man-made structures such as sea walls to mitigate the damage from storms, but recently more natural solutions have come into favor. We present empirically-derived values for biophysical attributes of commonly occurring sandy beach and dune plant species, including stem height, density diameter, and strength; number of leaves, their area of cover, and hardness; and quantities of aboveground, belowground, and root biomass. These parameters can be used to further explore the interactions between vegetation, wave attenuation, sediment accumulation and erosion through more realistic experiments, and analytic or numerical models. We also used wave flume experiments with living vegetation to investigate both the capacity of dune plants to reduce erosion and the specific mechanisms by which this occurs. In particular, our study focused on the relationship between the ratio of above ground biomass to below ground biomass and the resulting differences in levels of erosion. We found that all plant species reduced erosion equally. Dunes with below ground biomass only (BG) experienced more erosion than dunes with whole plants (AGBG), but un-vegetated controls experienced about twice as much erosion as either BG or ABGB treatments. Linear regressions singled out high above ground biomass as the primary factor correlated with decreased erosion, and this was corroborated by reduced erosion in the back half of AGBG treatments compared to GB treatments. Coastal protection strategies, such as dune restoration, are of vital importance to not only the quality of coastal ecosystems, but also for the continued well-being of the disproportionate number of people that live on or near the coasts. Our findings provide needed information for coastal managers and policy makers, while also setting the stage for future research at the intersection of ecological and physical processes on vulnerable coastlines. Advisors/Committee Members: Feagin, Russell A (advisor), Boutton, Thomas (committee member), Figlus, Jens (committee member), Martinez, Marisa (committee member).

Subjects/Keywords: Dune vegetation; sediment erosion; wave attenuation

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APA (6^th Edition):

Furman, M. R. (2016). Dune Plant Biophysical Traits and Their Impacts on Erosion. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/157760

Chicago Manual of Style (16^th Edition):

Furman, Matthew Robbins. “Dune Plant Biophysical Traits and Their Impacts on Erosion.” 2016. Masters Thesis, Texas A&M University. Accessed March 03, 2021. http://hdl.handle.net/1969.1/157760.

MLA Handbook (7^th Edition):

Furman, Matthew Robbins. “Dune Plant Biophysical Traits and Their Impacts on Erosion.” 2016. Web. 03 Mar 2021.

Vancouver:

Furman MR. Dune Plant Biophysical Traits and Their Impacts on Erosion. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1969.1/157760.

Council of Science Editors:

Furman MR. Dune Plant Biophysical Traits and Their Impacts on Erosion. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/157760

University of Waikato

13. Davies-Calway, Celeste Jade. The change in the horizontal position of the dune toe and vegetation line on beaches within the Waikato Region .

Degree: 2020, University of Waikato

URL: http://hdl.handle.net/10289/13592

► Beaches are highly variable landscapes that are constantly changing in response to a range of climatic variables. For example, local wind can cause the movement… (more)

▼ Beaches are highly variable landscapes that are constantly changing in response to a range of climatic variables. For example, local wind can cause the movement of sand across the beach and accretion, whilst storms that occur far from the beach create waves and surges which also changes the shape and morphology of the beach. The lower beach face is inundated for longer during a tidal cycle and therefore is subjected more often to wave action conversely, the upper part of the beach is inundated less often and therefore is less affected by wave energy. When storms occur, water levels are higher along the beach, waves are brought into contact with the upper beach face and erosion occurs. This erosion causes escarpment of the dune face and landward movement of the beach face, where sand is transported to offshore bars in the surf zone. Changes also occur during fair weather conditions where accretion occurs across the beach face and dune area and sand is transported back up onto the beach and sand dunes. Beach morphology has traditionally been monitored using beach profiles, however new methods are emerging that provide more information with the potential for greater spatial and temporal data collection. In New Zealand the vegetation line and the position of the dune toe is often used as a proxy for the shoreline and setback distances are measured relative to this feature. Beach morphodynamics have been studied extensively but typical monitoring and predictive methods are not optimised to track and predict changes in the dune toe position. Beach profile surveys are the most common and reliable monitoring method used for monitoring beaches and they are used extensively throughout the world. Although beach profiles give valuable information on several different aspects of beach processes, they may not be the optimal method for tracking dune toe movement and there are other methods that might be more effective. The aim of the research was to provide information to help optimise the monitoring and prediction of changes in the dune toe by determining: (i) the horizontal and vertical variation of the dune toe to establish how often the horizontal and vertical position of the sand dune toe changes, (ii) the alongshore variation of the dune toe along the beach length, (iii) what causes the changes in the dune toe, (iv) compare using the dune toe for beach monitoring with traditional beach monitoring methods, (v) testing different methods to measure the dune toe and vegetation line, (vi) predicting the dune toe in the future using a model. The main study sites for the research were Whangapoua Beach, Matarangi Beach, Buffalo Beach, Hot Water Beach and Tairua beach of eastern Coromandel Peninsula, and Ngarunui Beach, Raglan, where field surveys were conducted. An historical dataset of beach profiles from 20 Eastern Coromandel beaches were analysed for long term patterns. A new method for measuring dune toe using video analysis and a model for predicting the future dune toe changes was tested at Tairua Beach, Coromandel… Advisors/Committee Members: Bryan, Karin R (advisor), Hunt, Stephen (advisor).

Subjects/Keywords: dune toe; vegetation line; erosion; beach profile

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APA (6^th Edition):

Davies-Calway, C. J. (2020). The change in the horizontal position of the dune toe and vegetation line on beaches within the Waikato Region . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/13592

Chicago Manual of Style (16^th Edition):

Davies-Calway, Celeste Jade. “The change in the horizontal position of the dune toe and vegetation line on beaches within the Waikato Region .” 2020. Masters Thesis, University of Waikato. Accessed March 03, 2021. http://hdl.handle.net/10289/13592.

MLA Handbook (7^th Edition):

Davies-Calway, Celeste Jade. “The change in the horizontal position of the dune toe and vegetation line on beaches within the Waikato Region .” 2020. Web. 03 Mar 2021.

Vancouver:

Davies-Calway CJ. The change in the horizontal position of the dune toe and vegetation line on beaches within the Waikato Region . [Internet] [Masters thesis]. University of Waikato; 2020. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10289/13592.

Council of Science Editors:

Davies-Calway CJ. The change in the horizontal position of the dune toe and vegetation line on beaches within the Waikato Region . [Masters Thesis]. University of Waikato; 2020. Available from: http://hdl.handle.net/10289/13592

Oregon State University

14. Wiedemann, Alfred M. Contributions to the plant ecology of the Oregon coastal sand dunes.

Degree: PhD, Botany, 1966, Oregon State University

URL: http://hdl.handle.net/1957/17953

► Sand dunes are found along the coasts of most of the large land masses of the world. Because of their proximity to man and his… (more)

▼ Sand dunes are found along the coasts of most of the large land masses of the world. Because of their proximity to man and his activities, the maritime sand dunes of Europe, particularly Germany, France, Holland and Scandinavia, have the longest history of stabilization activities and botanical investigation. There are coastal dune areas, some of great extent, in Africa, tropical Asia, Australia, and South America. In general, little published information is available concerning these areas. Ecological studies of coastal dune vegetation and environment have been most extensive in Great Britain, and to a lesser extent, in North America. Of the North American coastal dunes, those of the east coast have received considerable attention while those of the west coast have been largely neglected. Along the Oregon coast are found some of the most extensive and best developed coastal sand dune areas in North America. Occurring on some 225 km. of the state's 500 km. of ocean facing coastline, these areas are made up of a great variety of dune landscape features and present unique conditions for the development and maintenance of vegetation. There are many places in this dune area where the strong, constant winds have eroded the sand surface to or near the water table resulting in a stabilized surface - the deflation plain - which provides an excellent starting point for the development of vegetation. After preliminary ground and air reconnaissance, 11 deflation plains were selected for detailed study, ranging in location from Sand Lake on the north to Tahkenitch Creek on the south. These deflation plains and their location are described in detail. Vegetation data (species and cover) were taken on a total of 134 sampling stands, each consisting of five meter-square quadrats for herbaceous vegetation, and one 6 x 6 meter quadrat for shrub and forest vegetation. The species and stand data we arranged on comparative charts so as to bring together stands with mutually occurring species. This resulted in the delineation of seven communities with definite successional relationships. Primary succession begins with one of four herbaceous communities: dry meadow, meadow, rush meadow or marsh. Succession then proceeds to low shrub, tall shrub and finally forest. The dry meadow is dominated by three species: Lupinus littoralis, Ammophila arenaria and Poa macrantha. The site is dry with no standing water at any time. Sand deposition and deflation occur in varying degrees. The important species of the meadow are Festuca rubra, Aira praecox, Hypochaeris radicata and Fragaria chiloensis. The surface is dry except for short periods of standing water during the winter months. There is no sand deposition. The rush meadow is characterized by its dense growth of Trifolium willdenovii and Juncus phaeocephalus. The site is low and moist, with water standing on the surface during the winter months. The marsh is found on areas which are quite damp-water stands on the surface for around six months of the… Advisors/Committee Members: Chilcote, W. W. (advisor).

Subjects/Keywords: Sand dune ecology

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APA (6^th Edition):

Wiedemann, A. M. (1966). Contributions to the plant ecology of the Oregon coastal sand dunes. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/17953

Chicago Manual of Style (16^th Edition):

Wiedemann, Alfred M. “Contributions to the plant ecology of the Oregon coastal sand dunes.” 1966. Doctoral Dissertation, Oregon State University. Accessed March 03, 2021. http://hdl.handle.net/1957/17953.

MLA Handbook (7^th Edition):

Wiedemann, Alfred M. “Contributions to the plant ecology of the Oregon coastal sand dunes.” 1966. Web. 03 Mar 2021.

Vancouver:

Wiedemann AM. Contributions to the plant ecology of the Oregon coastal sand dunes. [Internet] [Doctoral dissertation]. Oregon State University; 1966. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1957/17953.

Council of Science Editors:

Wiedemann AM. Contributions to the plant ecology of the Oregon coastal sand dunes. [Doctoral Dissertation]. Oregon State University; 1966. Available from: http://hdl.handle.net/1957/17953

Oregon State University

15. Palmsten, Margaret L. Dune erosion models and swash zone kinematics from remote video observations.

Degree: PhD, Oceanography, 2011, Oregon State University

URL: http://hdl.handle.net/1957/19823

► The subaerial beach, composed of sand dunes and the foreshore, provides a natural buffer zone between vulnerable land and the dissipation of storm wave energy… (more)

▼ The subaerial beach, composed of sand dunes and the foreshore, provides a natural buffer zone between vulnerable land and the dissipation of storm wave energy due to wave breaking. The natural beauty of this region is attractive to people, and as a result, significant investment has been placed in this relatively unstable strip between land and water. During storms, when water levels and waves exceed the base of the dune and the dunes are vulnerable to erosion, development and ecosystems landward of the dune are at risk. Ideally, predictive models would forecast potential dune erosion, allowing appropriate management response. One class of existing dune erosion models is based on assumed avalanching once foreshore slopes exceed a user defined maximum value, although vertical or even overhanging dunes frequently occur in nature, suggesting that a maximum slope is not a universal parameterization. Another approach relates the volume of eroded sediment to the normal force of impact via an empirical coefficient. However, neither of these approaches addresses the fundamental physics controlling dune erosion. The objective of this dissertation is two-fold. The primary objective is to improve our understanding of the physics driving dune erosion and develop new predictive models. The secondary objective is to develop innovative new methods for studying the dune and foreshore using remotely sensed observations that can provide the data needed to improve our understanding of the processes. The first section of this dissertation focuses on developing a stereo video method for making quantitative observations of dune erosion at higher spatial and temporal resolution than traditional measurements allow. Resolution of the technique is 0.1 m in the horizontal and 0.04 m in the vertical. Errors were on the order of 0.02 m to 0.08 m (1 to 2 pixels) when compared with in situ surveys. Newly developed confidence intervals accurately quantified observed scatter from the stereo technique. The method was implemented in a large-scale wave flume experiment designed to reproduce a storm hydrograph. The new observations of dune morphology were used to improve an existing dune erosion model, accounting for the interaction between fluid and sediment by relating the momentum flux from waves onto the dune directly to eroded volume. We improved parameterizations for offshore wave forcing in the model based on an assumed normal distribution of swash on dunes. The model reproduced 64% of the observed variance in observations given known forcing at the dune and 55% of observed variance based on the new parameterizations of offshore forcing. The second section describes the development of a new dune erosion model based on observations from the dune erosion experiment. In the new model, the dune slumps when the weight of the dune plus the weight of water infiltrated from swash exceeds the resisting strength of the sediment. Eroded volume of sediment is then equal to the infiltrated volume of sediment. Infiltration was… Advisors/Committee Members: Holman, Robert (advisor), Ozkan-Haller, Tuba (committee member).

Subjects/Keywords: dune erosion; Beach erosion – Mathematical models

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APA (6^th Edition):

Palmsten, M. L. (2011). Dune erosion models and swash zone kinematics from remote video observations. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/19823

Chicago Manual of Style (16^th Edition):

Palmsten, Margaret L. “Dune erosion models and swash zone kinematics from remote video observations.” 2011. Doctoral Dissertation, Oregon State University. Accessed March 03, 2021. http://hdl.handle.net/1957/19823.

MLA Handbook (7^th Edition):

Palmsten, Margaret L. “Dune erosion models and swash zone kinematics from remote video observations.” 2011. Web. 03 Mar 2021.

Vancouver:

Palmsten ML. Dune erosion models and swash zone kinematics from remote video observations. [Internet] [Doctoral dissertation]. Oregon State University; 2011. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1957/19823.

Council of Science Editors:

Palmsten ML. Dune erosion models and swash zone kinematics from remote video observations. [Doctoral Dissertation]. Oregon State University; 2011. Available from: http://hdl.handle.net/1957/19823

16. Forslund, Joakim. Vanlig Synth med ovanliga ljud.

Degree: 2011, , School of Planning and Media Design

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5523

► Under vårterminen 2011 har jag studerat hur ett verktyg påverkar en arbetsprocess. Från en idé har ett projekt vuxit fram och två ljudbanker för… (more)

Subjects/Keywords: Ljuddesign; Virtuella instrument; Mjukvarusynthar; Dune; Trummor

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APA (6^th Edition):

Forslund, J. (2011). Vanlig Synth med ovanliga ljud. (Thesis). , School of Planning and Media Design. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5523

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Forslund, Joakim. “Vanlig Synth med ovanliga ljud.” 2011. Thesis, , School of Planning and Media Design. Accessed March 03, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5523.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Forslund, Joakim. “Vanlig Synth med ovanliga ljud.” 2011. Web. 03 Mar 2021.

Vancouver:

Forslund J. Vanlig Synth med ovanliga ljud. [Internet] [Thesis]. , School of Planning and Media Design; 2011. [cited 2021 Mar 03]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5523.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Forslund J. Vanlig Synth med ovanliga ljud. [Thesis]. , School of Planning and Media Design; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-5523

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

17. Kiki Sandoungout, Serge Nahed. Caractérisation de la morphologie des dunes dans des écoulements unidirectionnels et alternatifs : Subaqueous dunes morphodynamics under unidirectional and alternating flow into a narrow channel.

Degree: Docteur es, Géosciences marines, 2019, Brest

URL: http://www.theses.fr/2019BRES0045

►

Cette thèse traite de la forme et de la mobilité des dunes dans l’eau sous un écoulement turbulent. L’état d’équilibre des dunes en régime stationnaire… (more)

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Cette thèse traite de la forme et de la mobilité des dunes dans l’eau sous un écoulement turbulent. L’état d’équilibre des dunes en régime stationnaire puis le retour à l’équilibre après un changement de sens de l’écoulement sont caractérisés. On examine la variation des paramètres de forme (hauteur, longueur, rapport d’aspect) et de la vitesse de migration des dunes en fonction de la masse du sédiment m0 et de la vitesse de l’écoulement. Cette étude est menée expérimentalement dans un chenal fermé et étroit et les résultats sont comparés aux prédictions d'un modèle de dunes 2D tenant compte du processus de relaxation du transport. À l’équilibre, ce modèle prédit suivant la masse de la dune un régime « petite dune » et un régime « grande dune » où la hauteur est proportionnelle respectivement à m0 et à √m0. Un régime de transition où la hauteur est fonction de m0 à une puissance comprise entre 0,5 et 1 les sépare. Ces régimes sont identiques à ceux prédits par le modèle de Kroy et al. (2002) pour les barkhanes éoliennes. Expérimentalement, seuls les régimes de transition et « grande dune » sont observés. Cet accord permet d’évaluer la longueur de saturation du transport. Le résultat obtenu est cohérent avec la longueur de dépôt proposée par Lajeunesse et al. (2010). Pour le retour à l’état d’équilibre suite au changement du sens de l’écoulement, deux scénarios transitoires sont observés. Le premier est une contraction suivie d’une élongation de la dune. Le second présente une contraction supplémentaire liée à une élongation de la dune au-delà de sa longueur d'équilibre initiale. Dans ces deux cas, le temps de retour à l’équilibre n’est pas proportionnel à la masse de la dune.

This thesis deals with the morphodynamics of subaqueous dunes under a turbulent flow. The equilibrium State of the dunes under stationary flow, and then the return to equilibrium state after a change in the flow direction are characterized. The variation of the shape parameters (height, length, aspect ratio) and the migration speed of dunes are examined as a function of the mass m0 of sediment and the flow rate. This study is conducted experimentally into a narrow, closed flume and the results are compared to predictions of a 2D dune model that takes into account the transport relaxation process. For steady dunes, this model predicts a "small dune" and a "large dune" régime where the dune height respectively increases as m0 and √m0. These regimes are separated by a transitional régime where the dune height is proportional to m0 with an exponent ranging from 0.5 to 1. These régimes are identical to those predicted by the model of Kroy et al. (2002) for æolian barchans.Experimentally, the steady dunes range from the “transition” to the "large dune" régime as the mass increases. This agreement allows to assess the saturation length of the transport. The result is consistent with the deposition length proposed by Lajeunesse et al. (2010). Concerning the return to the steady-state shape after changing in the flow direction, two transient scenarios…

Advisors/Committee Members: Valance, Alexandre (thesis director), Le Dantec, Nicolas (thesis director).

Subjects/Keywords: Dunes aquatiques; Morphologie des dunes à l’équilibre; Modélisations des dunes; Longueur de saturation; Retournement d’une dune; Subaqueous dunes; Steady dune morphology; Dune modelling; Saturation length; Dune reversal

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APA (6^th Edition):

Kiki Sandoungout, S. N. (2019). Caractérisation de la morphologie des dunes dans des écoulements unidirectionnels et alternatifs : Subaqueous dunes morphodynamics under unidirectional and alternating flow into a narrow channel. (Doctoral Dissertation). Brest. Retrieved from http://www.theses.fr/2019BRES0045

Chicago Manual of Style (16^th Edition):

Kiki Sandoungout, Serge Nahed. “Caractérisation de la morphologie des dunes dans des écoulements unidirectionnels et alternatifs : Subaqueous dunes morphodynamics under unidirectional and alternating flow into a narrow channel.” 2019. Doctoral Dissertation, Brest. Accessed March 03, 2021. http://www.theses.fr/2019BRES0045.

MLA Handbook (7^th Edition):

Kiki Sandoungout, Serge Nahed. “Caractérisation de la morphologie des dunes dans des écoulements unidirectionnels et alternatifs : Subaqueous dunes morphodynamics under unidirectional and alternating flow into a narrow channel.” 2019. Web. 03 Mar 2021.

Vancouver:

Kiki Sandoungout SN. Caractérisation de la morphologie des dunes dans des écoulements unidirectionnels et alternatifs : Subaqueous dunes morphodynamics under unidirectional and alternating flow into a narrow channel. [Internet] [Doctoral dissertation]. Brest; 2019. [cited 2021 Mar 03]. Available from: http://www.theses.fr/2019BRES0045.

Council of Science Editors:

Kiki Sandoungout SN. Caractérisation de la morphologie des dunes dans des écoulements unidirectionnels et alternatifs : Subaqueous dunes morphodynamics under unidirectional and alternating flow into a narrow channel. [Doctoral Dissertation]. Brest; 2019. Available from: http://www.theses.fr/2019BRES0045

University of Victoria

18. Eamer, Jordan Blair Reglin. Detecting geomorphic responses following invasive vegetation removal: Wickaninnish Dunes, Pacific Rim National Park Reserve, British Columbia, Canada.

Degree: Dept. of Geography, 2012, University of Victoria

URL: http://hdl.handle.net/1828/3912

► This thesis presents results from a large-scale dynamic restoration program implemented by Parks Canada Agency (PCA) to remove invasive marram grasses (Ammophila spp.) from a… (more)

▼ This thesis presents results from a large-scale dynamic restoration program implemented by Parks Canada Agency (PCA) to remove invasive marram grasses (Ammophila spp.) from a foredune-transgressive dune complex in Pacific Rim National Park, British Columbia, Canada. The program goal is to restore habitat for endangered Pink sandverbena (Abronia umbellate var breviflora) as required by the Canadian Species at Risk Act (SARA). Three sites were restored by PCA via mechanical removal of invasive marram grasses (Ammophila spp.) in September 2009. This study documents geomorphic and sediment mass exchange responses at one of these sites as derived from detailed Digital Elevation Model (DEM) surveys of a 10 320 m2 study area that spans three discrete geomorphic units (beach, foredune, and transgressive dune complex). Subsequent approximately bi-monthly total station surveys for the first year post-restoration are compared to a pre-restoration baseline Light Detection and Ranging (LiDAR) survey (August 2009) to quantify and describe morphodynamic responses and volumetric changes. Two different methodologies were utilized for post processing of volumetric change DEMs in order to filter out non-statistically significant change. The first filter used software developed for fluvial geomorphology and was tested using the student’s t distribution. This approach, while novel in the field of coastal geomorphology, was less complex than the second which was based on spatial statistical procedures popular in the ecological sciences. This filter was based on local Moran’s Ii, which was used to generate 1.5m and 5m distance thresholds of statistically significant geomorphic change. These thresholds were specified to simulate the outer limit of saltating grains and the dimensions of landform development, respectively. Results show that the beach receives appreciable sediment supply via bar welding and berm development in the winter, much of which is transported to the foredune and transgressive dune complex units in the spring. This promotes rapid redevelopment of incipient dunes in the backshore, rebuilding of the seaward slope of the foredune following wave scarping, and localized extension of depositional lobes in the transgressive dune complex fed by sediment from the beach and foredune stoss (only shown in local Moran’s Ii results). The results of this study suggest that the foredune-transgressive dune complex at Wickaninnish Dunes has experienced enhanced aeolian activity and positive sediment volume changes over the first year following mechanical restoration. In addition, comparison of the two methodologies show that spatial statistics were found to provide both more realistic calculated volumes at a smaller threshold distance (e.g., – 0.012m3 m-2 in the foredune after devegetation; only +0.015m3 m-2 in the transgressive dune complex in the year following restoration) and better highlighting of important spatial processes at a larger threshold distance (e.g., foredune stoss erosion; feature highlighting) than the volumetric… Advisors/Committee Members: Walker, Ian J. (supervisor).

Subjects/Keywords: Physical Geography; Restoration; Coastal; Dune; Spatial Analysis

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APA (6^th Edition):

Eamer, J. B. R. (2012). Detecting geomorphic responses following invasive vegetation removal: Wickaninnish Dunes, Pacific Rim National Park Reserve, British Columbia, Canada. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/3912

Chicago Manual of Style (16^th Edition):

Eamer, Jordan Blair Reglin. “Detecting geomorphic responses following invasive vegetation removal: Wickaninnish Dunes, Pacific Rim National Park Reserve, British Columbia, Canada.” 2012. Masters Thesis, University of Victoria. Accessed March 03, 2021. http://hdl.handle.net/1828/3912.

MLA Handbook (7^th Edition):

Eamer, Jordan Blair Reglin. “Detecting geomorphic responses following invasive vegetation removal: Wickaninnish Dunes, Pacific Rim National Park Reserve, British Columbia, Canada.” 2012. Web. 03 Mar 2021.

Vancouver:

Eamer JBR. Detecting geomorphic responses following invasive vegetation removal: Wickaninnish Dunes, Pacific Rim National Park Reserve, British Columbia, Canada. [Internet] [Masters thesis]. University of Victoria; 2012. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1828/3912.

Council of Science Editors:

Eamer JBR. Detecting geomorphic responses following invasive vegetation removal: Wickaninnish Dunes, Pacific Rim National Park Reserve, British Columbia, Canada. [Masters Thesis]. University of Victoria; 2012. Available from: http://hdl.handle.net/1828/3912

Michigan State University

19. McLeod, Kenneth William, 1947-. Survival strategy of Ptelea trifoliata during establishment on Lake Michigan sand dunes.

Degree: PhD, Department of Botany and Plant Pathology, 1974, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:5962

Subjects/Keywords: Sand dune ecology

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APA (6^th Edition):

McLeod, Kenneth William, 1. (1974). Survival strategy of Ptelea trifoliata during establishment on Lake Michigan sand dunes. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:5962

Chicago Manual of Style (16^th Edition):

McLeod, Kenneth William, 1947-. “Survival strategy of Ptelea trifoliata during establishment on Lake Michigan sand dunes.” 1974. Doctoral Dissertation, Michigan State University. Accessed March 03, 2021. http://etd.lib.msu.edu/islandora/object/etd:5962.

MLA Handbook (7^th Edition):

McLeod, Kenneth William, 1947-. “Survival strategy of Ptelea trifoliata during establishment on Lake Michigan sand dunes.” 1974. Web. 03 Mar 2021.

Vancouver:

McLeod, Kenneth William 1. Survival strategy of Ptelea trifoliata during establishment on Lake Michigan sand dunes. [Internet] [Doctoral dissertation]. Michigan State University; 1974. [cited 2021 Mar 03]. Available from: http://etd.lib.msu.edu/islandora/object/etd:5962.

Council of Science Editors:

McLeod, Kenneth William 1. Survival strategy of Ptelea trifoliata during establishment on Lake Michigan sand dunes. [Doctoral Dissertation]. Michigan State University; 1974. Available from: http://etd.lib.msu.edu/islandora/object/etd:5962

University of Iceland

20. Torres Meza, Luis Felipe, 1986-. The Bene Gesserit in Frank Herbert's Dune. An Analysis .

Degree: 2011, University of Iceland

URL: http://hdl.handle.net/1946/7298

► The following is a work of literary analysis involving Frank Herbert’s Dune, which is the first published tome of what later became known as the… (more)

Subjects/Keywords: Enska; Bókmenntagreining; Herbert, Frank; The Dune Chronicles

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APA (6^th Edition):

Torres Meza, Luis Felipe, 1. (2011). The Bene Gesserit in Frank Herbert's Dune. An Analysis . (Thesis). University of Iceland. Retrieved from http://hdl.handle.net/1946/7298

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Torres Meza, Luis Felipe, 1986-. “The Bene Gesserit in Frank Herbert's Dune. An Analysis .” 2011. Thesis, University of Iceland. Accessed March 03, 2021. http://hdl.handle.net/1946/7298.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Torres Meza, Luis Felipe, 1986-. “The Bene Gesserit in Frank Herbert's Dune. An Analysis .” 2011. Web. 03 Mar 2021.

Vancouver:

Torres Meza, Luis Felipe 1. The Bene Gesserit in Frank Herbert's Dune. An Analysis . [Internet] [Thesis]. University of Iceland; 2011. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/1946/7298.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Torres Meza, Luis Felipe 1. The Bene Gesserit in Frank Herbert's Dune. An Analysis . [Thesis]. University of Iceland; 2011. Available from: http://hdl.handle.net/1946/7298

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

21. Lien , Yu-ying. Acoustic Propagation Effect due to Subaqueous Sand Dunes in the South China Sea.

Degree: Master, Institute of Undersea Technology, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1101114-103539

► To study the characteristics of sand dunes in the South China Sea (SCS) and its effects on sound propagation, the pilot experiment of the Acoustic… (more)

Subjects/Keywords: sand dune; towed source; multipath effect; sand dune acoustic experiment; travel time; acoustic propagation

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APA (6^th Edition):

Lien , Y. (2014). Acoustic Propagation Effect due to Subaqueous Sand Dunes in the South China Sea. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1101114-103539

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lien , Yu-ying. “Acoustic Propagation Effect due to Subaqueous Sand Dunes in the South China Sea.” 2014. Thesis, NSYSU. Accessed March 03, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1101114-103539.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lien , Yu-ying. “Acoustic Propagation Effect due to Subaqueous Sand Dunes in the South China Sea.” 2014. Web. 03 Mar 2021.

Vancouver:

Lien Y. Acoustic Propagation Effect due to Subaqueous Sand Dunes in the South China Sea. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Mar 03]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1101114-103539.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lien Y. Acoustic Propagation Effect due to Subaqueous Sand Dunes in the South China Sea. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1101114-103539

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

22. Kateman, I. (author). Wave-impact driven dune face erosion processes: An analysis using stereo video observations and in-situ measurements.

Degree: Civil Engineering and Geosciences, Hydraulic Engioneering, 2007, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:beb954c2-f66b-4883-938f-e2bb16ff1020

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For socio-economic and safety reasons it is desirable to be able to model shoreline retreat. To that end, it is essential that models predict dune… (more)

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For socio-economic and safety reasons it is desirable to be able to model shoreline retreat. To that end, it is essential that models predict dune and beach profile change under storm conditions as accurately as possible. Several approaches to dune erosion modelling have been proposed. The wave-impact driven dune erosion model decouples inner surf and swash zone sediment transports from dune face erosion, enabling a combination of this model with a process-based morphodynamic model for the nearshore. Such a combined model allows for a physical feedback between nearshore hydrodynamics, dune face erosion and the evolution of the nearshore and foreshore from that erosion. The present report describes a study on wave-impact driven sediment flux. Previous research by Fisher et al. (1986) resulted in a linear relation between wave impact and dune face erosion volumes. In their approach the total erosion of a dune during a certain period is considered as the summation of the specific erosion volumes from single impacts on the dune face. From observations during large-scale dune erosion experiments in the Delta flume, it is concluded that dune face erosion under wave attack takes place in periodical slump events, preceded by a period of wave attack. In this research, the relation between wave impact and dune face erosion volumes is studied taking into account the periodicity of slump events. To this end, wave impact, period of wave attack and corresponding dune erosion volumes are defined and derived from data of the large-scale dune erosion experiments. Wave impact for a predefined period is derived from in-situ pressure and flow velocity measurements, while erosion volumes for entire tests and for individual slump events are derived from respectively in-situ profile measurements and video data. Stereo video calculations are used to process video data into 3D-profiles. The period of wave attack is derived from video measurements. The resulting values show a clear coherence between wave impact and sediment flux. Several relations can be fitted through the data points for the situation where the dune face is entirely above still water level (SWL) and the dune face has a near-critical slope. Fitted relations are not applicable for the situation where the toe of the dune is below SWL, as this implies a fundamentally different dune erosion process.

Civil Engineering and Geosciences

Advisors/Committee Members: Stive, M.J.F. (mentor), Reniers, A.J.H.M. (mentor), Uijttewaal, W.S.J. (mentor), Cohen, A.B. (mentor), Van Thiel de Vries, J.S.M. (mentor).

Subjects/Keywords: dune erosion; video monitoring; dune modelling

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APA (6^th Edition):

Kateman, I. (. (2007). Wave-impact driven dune face erosion processes: An analysis using stereo video observations and in-situ measurements. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:beb954c2-f66b-4883-938f-e2bb16ff1020

Chicago Manual of Style (16^th Edition):

Kateman, I (author). “Wave-impact driven dune face erosion processes: An analysis using stereo video observations and in-situ measurements.” 2007. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:beb954c2-f66b-4883-938f-e2bb16ff1020.

MLA Handbook (7^th Edition):

Kateman, I (author). “Wave-impact driven dune face erosion processes: An analysis using stereo video observations and in-situ measurements.” 2007. Web. 03 Mar 2021.

Vancouver:

Kateman I(. Wave-impact driven dune face erosion processes: An analysis using stereo video observations and in-situ measurements. [Internet] [Masters thesis]. Delft University of Technology; 2007. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:beb954c2-f66b-4883-938f-e2bb16ff1020.

Council of Science Editors:

Kateman I(. Wave-impact driven dune face erosion processes: An analysis using stereo video observations and in-situ measurements. [Masters Thesis]. Delft University of Technology; 2007. Available from: http://resolver.tudelft.nl/uuid:beb954c2-f66b-4883-938f-e2bb16ff1020

23. Cotte, Philippe. Le projet WA105 : un prototype de chambre à projection temporelle à argon liquide diphasique utilisant des détecteurs LEMs : The WA105 project : a prototype of double phase liquid argon time projection chamber using LEMs detectors.

Degree: Docteur es, Physique des particules, 2019, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2019SACLS246

►

Le projet WA105/ProtoDUνE-DP est une expérience de prototypage qui a pour objectif de tester la technologie de Chambre à Projection Temporelle à Argon Liquide Diphasique… (more)

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Le projet WA105/ProtoDUνE-DP est une expérience de prototypage qui a pour objectif de tester la technologie de Chambre à Projection Temporelle à Argon Liquide Diphasique (DLArTPC) à grande échelle dans le but de l'utiliser dans la future expérience de physique des neutrinos DUνE. Prévue fin 2026 aux USA, DUνE vise à déterminer l'ordre des masses des neutrinos ainsi que la violation de CP dans le secteur leptonique. Le travail de cette thèse s'oriente dans un premier temps autour des tests et simulations effectués sur les éléments de détection et d'amplification des détecteurs de WA105. Dans un second temps, la thèse s'oriente autour de l'analyse des traces de muons cosmiques vues par un premier prototype de 4t, opéré en 2017 au CERN. La technologie DLArTPC est une variante de la technologie LArTPC permettant une amplification des électrons extraits de la phase liquide à la phase gazeuse. Les amplificateurs d'électrons (LEMs) sont des plaques de PCB de 50x50cm² épais de 1mm, percés de 400k trous de 500 microns de diamètre, recouvertes de chaque côté par une mince couche de cuivre. Une différence de potentiel de l'ordre de 3kv permet d'atteindre un gain supérieur à 10. Une partie du travail de cette thèse a consisté à simuler la dérive des électrons à travers ces LEMs afin d'étudier les efficacités de collection de charge. Une autre partie de cette thèse a consisté à mesurer les caractéristiques importantes (épaisseur, tenue en tension) des amplificateurs destinés au démonstrateur de 300t de WA105, dont la mise en route a été effectuée fin août 2019 au CERN. Le gain est une des caractéristiques principales d'une DLArTPC, et il a été étudié dans le prototype de 4t grâce à la détection de muons cosmiques. Des comparaisons sont effectuées avec les résultats d'un prototype de 3L datant de 2014, et un programme de reconstruction de trace dédié a été développé pour traiter certains événements bruités. Le travail effectué dans cette thèse a permis de mieux comprendre le fonctionnement des DLArTPCs, notamment en ce qui concerne l'aspect multiplication et dérive des électrons. Ces connaissances seront importantes lors de l'opération du démonstrateur de 300t au CERN, ainsi que lors de l'exploitation du module DLArTPC de DUνE.

The WA105/ProtoDUνE-DP project is a prototyping experiment which goal is to test the Double Phase Liquid Argon Time Projection Chamber (DLArTPC) technology at large scale, to use it in the future neutrinos physics experiment DUνE. Scheduled for the end of 2026 in the USA, DUνE aims at measuring the neutrinos mass ordering and the leptonic CP symetry violation. The first part of this thesis is dedicated to tests and simulations of the detection and amplification elements of the WA105 detectors. The second part is focused on the analysis of cosmic muon tracks seen by a first prototype of 4t, operated at CERN in 2017. The DLArTPC technology is a variation of the LArTPC technology allowing for the amplification of the electrons extracted from the liquid phase to the gas phase. The Large Electron Amplifiers…

Advisors/Committee Members: Mazzucato, Edoardo (thesis director).

Subjects/Keywords: LEM; Physique des neutrinos; DLArTPC; WA105; Dune; LEM; Dune; Neutrino physics; WA105; DLArTPC

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APA (6^th Edition):

Cotte, P. (2019). Le projet WA105 : un prototype de chambre à projection temporelle à argon liquide diphasique utilisant des détecteurs LEMs : The WA105 project : a prototype of double phase liquid argon time projection chamber using LEMs detectors. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2019SACLS246

Chicago Manual of Style (16^th Edition):

Cotte, Philippe. “Le projet WA105 : un prototype de chambre à projection temporelle à argon liquide diphasique utilisant des détecteurs LEMs : The WA105 project : a prototype of double phase liquid argon time projection chamber using LEMs detectors.” 2019. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed March 03, 2021. http://www.theses.fr/2019SACLS246.

MLA Handbook (7^th Edition):

Cotte, Philippe. “Le projet WA105 : un prototype de chambre à projection temporelle à argon liquide diphasique utilisant des détecteurs LEMs : The WA105 project : a prototype of double phase liquid argon time projection chamber using LEMs detectors.” 2019. Web. 03 Mar 2021.

Vancouver:

Cotte P. Le projet WA105 : un prototype de chambre à projection temporelle à argon liquide diphasique utilisant des détecteurs LEMs : The WA105 project : a prototype of double phase liquid argon time projection chamber using LEMs detectors. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2019. [cited 2021 Mar 03]. Available from: http://www.theses.fr/2019SACLS246.

Council of Science Editors:

Cotte P. Le projet WA105 : un prototype de chambre à projection temporelle à argon liquide diphasique utilisant des détecteurs LEMs : The WA105 project : a prototype of double phase liquid argon time projection chamber using LEMs detectors. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2019. Available from: http://www.theses.fr/2019SACLS246

Cal Poly

24. Whitaker, Lindsey M. The Preservation and Protection of Native Biodiversity in the Guadalupe Nipomo Dunes Complex.

Degree: MS, Biological Sciences, 2016, Cal Poly

URL: https://digitalcommons.calpoly.edu/theses/1715 ; 10.15368/theses.2016.172

► The Guadalupe Nipomo Dunes Complex (GNDC) is located within the California Floristic Province, a biodiversity hotspot characterized by high rates of endemism and exceptional… (more)

▼ The Guadalupe Nipomo Dunes Complex (GNDC) is located within the California Floristic Province, a biodiversity hotspot characterized by high rates of endemism and exceptional loss of habitat. In 1980, the US Fish and Wildlife Service described the GNDC as, “the most unique and fragile ecosystem in the State of California,” and ranked it first on a list of 49 habitat areas needing state protection. It is the largest coastal dune area in California and it is one of the last remaining, relatively intact ecosystems of its type and size in the western United States. The growing recognition of species decline and the limited number of dollars allocated to conservation and restoration have led to development of new conservation planning software and conservation strategies. Marxan and Zonation were selected for this project due to their worldwide acceptance in biodiversity conservation planning as well as their specialization in identifying priority zones for conservation. This document describes the unique use of conservation planning software to select areas for resource allocation. It outlines the process of selecting conservation targets, the habitats and species important to overall health of an ecosystem, by using the expert involvement approach. Most importantly, this document outlines areas of high biodiversity that will later be used to allocate resources for the preservation and protection of biodiversity within the Guadalupe Nipomo Dunes Complex. Introduced species are the second-leading cause (after habitat degradation/loss), causing or contributing to the decline in species abundance and diversity. Ehrharta calycina Smith has become highly invasive in the coastal dune communities of Central and Southern California and currently holds a “high” CAL-IPC inventory rating, defined as a species with severe ecological impacts on physical processes, plant and animal communities and vegetation structure as well as reproductive biology and other attributes conducive to moderate to high rates of dispersal and establishment. Ehrharta calycina is a prolific seeder and stores its seeds annually in the soil, collecting a substantial seedbank. Little is known about E.calycina outside its native range, as its invasion into California coastal ecosystem is fairly recent. A field experiment in the Guadalupe Nipomo Dunes Complex assessed the contribution of seeds originating from the seedbank as compared to seeds from above ground either dropping from maternal plants or blown in from outside the plots to the establishment of new E. calycina cover. After a nine month perios, new E. calycina cover from both sources was not significantly different. Visible coverage of E. calycina began 77 days (November 24, 2015) after plot installation. After nine months of surveying, coverage reached 19% in the Seedbank Present treatment and 21% in the Seedbank Absent treatment. There was no significant effect associated with the slope and aspect of the experimental locations. This experiment will aid in management of this invasive species by… Advisors/Committee Members: Scott Steinmaus.

Subjects/Keywords: conservation; Marxan; Zonation; Ehrharta calycina; dune; coastal dune; Ecology and Evolutionary Biology; Weed Science

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APA (6^th Edition):

Whitaker, L. M. (2016). The Preservation and Protection of Native Biodiversity in the Guadalupe Nipomo Dunes Complex. (Masters Thesis). Cal Poly. Retrieved from https://digitalcommons.calpoly.edu/theses/1715 ; 10.15368/theses.2016.172

Chicago Manual of Style (16^th Edition):

Whitaker, Lindsey M. “The Preservation and Protection of Native Biodiversity in the Guadalupe Nipomo Dunes Complex.” 2016. Masters Thesis, Cal Poly. Accessed March 03, 2021. https://digitalcommons.calpoly.edu/theses/1715 ; 10.15368/theses.2016.172.

MLA Handbook (7^th Edition):

Whitaker, Lindsey M. “The Preservation and Protection of Native Biodiversity in the Guadalupe Nipomo Dunes Complex.” 2016. Web. 03 Mar 2021.

Vancouver:

Whitaker LM. The Preservation and Protection of Native Biodiversity in the Guadalupe Nipomo Dunes Complex. [Internet] [Masters thesis]. Cal Poly; 2016. [cited 2021 Mar 03]. Available from: https://digitalcommons.calpoly.edu/theses/1715 ; 10.15368/theses.2016.172.

Council of Science Editors:

Whitaker LM. The Preservation and Protection of Native Biodiversity in the Guadalupe Nipomo Dunes Complex. [Masters Thesis]. Cal Poly; 2016. Available from: https://digitalcommons.calpoly.edu/theses/1715 ; 10.15368/theses.2016.172

Delft University of Technology

25. Meijer, Lisa (author). Numerical Modelling of Aeolian Sediment Transport, Vegetation Growth and Blowout Formation in Coastal Dunes.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:4ea48a68-01ae-4d8f-8bf7-af065d570604

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Coastal dunes are dominant features along much of the world’s sandy coastlines serving as the first line of protection against coastal flooding. Besides this primary… (more)

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Coastal dunes are dominant features along much of the world’s sandy coastlines serving as the first line of protection against coastal flooding. Besides this primary purpose, the coastal dunes also provide a variety of other functions such as the supply of drinking water, nature conservation and recreational areas. With the secondary functions in mind, the Dutch coastal management strategy changed in 1990 from erosion control and stabilization of the coastline (reactive) to a policy of dynamic preservation (pro-active) with the introduction of a law called ‘’Dynamic preservation of the Dutch coast’’. This new dynamic strategy naturally induced irregularities in dunes that were completely stabilized before. One of these irregularities is the formation of a blowout. A small depression or hollow in the foredunes formed by wind erosion or wave impact may grow in time as sediment from the beach and foredunes is transported into the back dunes. In several Dutch cases such a blowout feature was artificially initiated as the exchange of sediment from the coastal system into the back dunes enhances the biodiversity significantly. Due to the high importance of the coastal dune performance as flood protection, good understanding and prediction of the (dynamic) coastal dune system is desired. Lately, general interest in this topic increased even more due to new societal challenges, such as decisions on coastal development for longer time scales, more complex management settings and sustainability. Coastal dunes and blowouts are shaped by wind induced sediment transport (aeolian sediment transport), biological - and hydrodynamic processes. To better understand and increase the predictability of dynamic systems, this study focuses on simulating the development of artificially initiated blowout features by including the combination of these relevant processes in the numerical model AeoLiS. This process-based model was originally developed to simulate aeolian sediment transport in supply-limited conditions, such as coastal areas. The study describes simulations of several academic dune formations to validate the applicability of the different (new) processes that were included in the numerical model. Finally, all processes are combined in simulations of a practical case that is used to compare numerical model results to field data on the development of multiple artificially initiated blowout features in the Dutch coast at Meijendel.

Civil Engineering | Hydraulic Engineering | Coastal Engineering

Advisors/Committee Members: de Vries, S. (graduation committee), Reniers, A.J.H.M. (graduation committee), van IJzendoorn, C.O. (graduation committee), van Westen, B. (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Aeolian sediment transport; Dune development; Coastal dune development; Blowouts; Process-based modelling; Numerical modelling; AeoLiS

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

APA (6^th Edition):

Meijer, L. (. (2020). Numerical Modelling of Aeolian Sediment Transport, Vegetation Growth and Blowout Formation in Coastal Dunes. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:4ea48a68-01ae-4d8f-8bf7-af065d570604

Chicago Manual of Style (16^th Edition):

Meijer, Lisa (author). “Numerical Modelling of Aeolian Sediment Transport, Vegetation Growth and Blowout Formation in Coastal Dunes.” 2020. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:4ea48a68-01ae-4d8f-8bf7-af065d570604.

MLA Handbook (7^th Edition):

Meijer, Lisa (author). “Numerical Modelling of Aeolian Sediment Transport, Vegetation Growth and Blowout Formation in Coastal Dunes.” 2020. Web. 03 Mar 2021.

Vancouver:

Meijer L(. Numerical Modelling of Aeolian Sediment Transport, Vegetation Growth and Blowout Formation in Coastal Dunes. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:4ea48a68-01ae-4d8f-8bf7-af065d570604.

Council of Science Editors:

Meijer L(. Numerical Modelling of Aeolian Sediment Transport, Vegetation Growth and Blowout Formation in Coastal Dunes. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:4ea48a68-01ae-4d8f-8bf7-af065d570604

26. Scarpelli, Andrea. Performances studies of the dual-phase Liquid Argon TPC for the DUNE experiment and analysis of the 4-tonne prototype detector data : Etude des performances d’une chambre à projection temporelle phase-double à Argon liquide pour l’expérience DUNE et analyse des donnés du prototype 4-tonne.

Degree: Docteur es, Physique de l'Univers, 2019, Université de Paris (2019-....)

URL: http://www.theses.fr/2019UNIP7159

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Grâce à leur excellente imagerie 3D couplée à des données calorimétriques de haute résolution, les 4 chambres à projection temporelle à argon liquide, de 10… (more)

Subjects/Keywords: DUNE; LArTPC; Phase-double; Simulation; Reconstruction; DUNE; LArTPC; Dual-phase; Simulation; Reconstruction

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APA (6^th Edition):

Scarpelli, A. (2019). Performances studies of the dual-phase Liquid Argon TPC for the DUNE experiment and analysis of the 4-tonne prototype detector data : Etude des performances d’une chambre à projection temporelle phase-double à Argon liquide pour l’expérience DUNE et analyse des donnés du prototype 4-tonne. (Doctoral Dissertation). Université de Paris (2019-....). Retrieved from http://www.theses.fr/2019UNIP7159

Chicago Manual of Style (16^th Edition):

Scarpelli, Andrea. “Performances studies of the dual-phase Liquid Argon TPC for the DUNE experiment and analysis of the 4-tonne prototype detector data : Etude des performances d’une chambre à projection temporelle phase-double à Argon liquide pour l’expérience DUNE et analyse des donnés du prototype 4-tonne.” 2019. Doctoral Dissertation, Université de Paris (2019-....). Accessed March 03, 2021. http://www.theses.fr/2019UNIP7159.

MLA Handbook (7^th Edition):

Scarpelli, Andrea. “Performances studies of the dual-phase Liquid Argon TPC for the DUNE experiment and analysis of the 4-tonne prototype detector data : Etude des performances d’une chambre à projection temporelle phase-double à Argon liquide pour l’expérience DUNE et analyse des donnés du prototype 4-tonne.” 2019. Web. 03 Mar 2021.

Vancouver:

Scarpelli A. Performances studies of the dual-phase Liquid Argon TPC for the DUNE experiment and analysis of the 4-tonne prototype detector data : Etude des performances d’une chambre à projection temporelle phase-double à Argon liquide pour l’expérience DUNE et analyse des donnés du prototype 4-tonne. [Internet] [Doctoral dissertation]. Université de Paris (2019-....); 2019. [cited 2021 Mar 03]. Available from: http://www.theses.fr/2019UNIP7159.

Council of Science Editors:

Scarpelli A. Performances studies of the dual-phase Liquid Argon TPC for the DUNE experiment and analysis of the 4-tonne prototype detector data : Etude des performances d’une chambre à projection temporelle phase-double à Argon liquide pour l’expérience DUNE et analyse des donnés du prototype 4-tonne. [Doctoral Dissertation]. Université de Paris (2019-....); 2019. Available from: http://www.theses.fr/2019UNIP7159

Stockholm University

27. Isvén, Ulrika. Sanddynsmorfologi och kusterosion i Laholmsbukten, Hallands län.

Degree: Physical Geography, 2014, Stockholm University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123318

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The following study investigates how a sand dune system in the central part of Laholm Bay (Laholmsbukten) in Halland County, Sweden, has evolved over… (more)

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The following study investigates how a sand dune system in the central part of Laholm Bay (Laholmsbukten) in Halland County, Sweden, has evolved over the time period 1947 to 2014. Effort was made to contribute to improved knowledge of how geomorphological variations and anthropogenic activity in the area have been influenced by each other over time. The study is aiming to provide an improved science basis for further development of coastal management in the area. Initial focus points were to investigate the correlation over time between changes in dune system morphology, vegetation distribution and anthropogenic influence. Furthermore connections were made as to how climate has influenced the development and how climate change during the 21^st century might affect the area. Methods used during the course of this study entailed fieldwork and remote sensing of aerial photographs. Changes in dune system dynamics, land cover and human impact on the area over time were analyzed. The result demonstrates that the area has undergone dynamic changes, affected by climatological aspects, human activities as well as vegetation changes. Decreasing topographic variations in the southern part of the dune system compared to the north is identified to be dependent on variations in soil fractions. This combined with the identified changes in vegetation distribution over time has an affect on erosion and deposition processes within the area. Future climate change during this century may further increase the dynamic behavior of the dune system, an important aspect to consider within local coastal management.

Följande studie utreder hur ett sanddynsområde i de centrala delarna av Laholmsbukten i Hallands län utvecklats under tidsperioden 1947-2014. Syftet var att skapa en uppdaterad kunskapsbild av områdets geomorfologiska utveckling och hur den antropogena aktiviteten i området har påverkat denna, för att, om möjligt bidra med underlag till en utveckling av förvaltningsarbetet i kustområdet. Fokus låg på att utreda sambanden mellan förändringar av landskapets morfologi, vegetationens utbredning och antropogen påverkan. Vidare undersöks hur klimatet under tidsperioden kan ha bidragit till den geomorfologiska utvecklingen och hur området kan komma att förändras fram till sekelskiftet år 2100. Arbetet innefattade fältarbete och fjärranalys av flygbilder. Faktorer såsom dynsystemets dynamik, areella förändringar i marktäcke och mänsklig påverkan på området analyserades. Resultatet påvisar att sanddynsområdet genomgått dynamiska förändringar över tid som kan antas bero på klimatologiska aspekter i kombination med mänsklig aktivitet och vegetationsförändringar. Dynområdets minskande relief i nord-sydlig riktning och variationer i dynkantens förskjutning över tid är beroende av det dynbildande materialets sammansättning. I kombination med identifierade variationer i vegetationens utbredning påverkar detta erosions- och ackumulationsförutsättningarna i området. Klimatförändringar under…

Subjects/Keywords: Coastal erosion; Dune system; Dune morphology; GIS; Erosion; Laholm bay; Laholmsbukten; Morphology; Sand dune; Dynmorfologi; Dynområde; Fjärranalys; GIS; Kusterosion; Laholmsbukten; Laholms kommun; Mellbystrand; Sandynsmorfologi; Sanddynsområde

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

APA (6^th Edition):

Isvén, U. (2014). Sanddynsmorfologi och kusterosion i Laholmsbukten, Hallands län. (Thesis). Stockholm University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123318

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Isvén, Ulrika. “Sanddynsmorfologi och kusterosion i Laholmsbukten, Hallands län.” 2014. Thesis, Stockholm University. Accessed March 03, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123318.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Isvén, Ulrika. “Sanddynsmorfologi och kusterosion i Laholmsbukten, Hallands län.” 2014. Web. 03 Mar 2021.

Vancouver:

Isvén U. Sanddynsmorfologi och kusterosion i Laholmsbukten, Hallands län. [Internet] [Thesis]. Stockholm University; 2014. [cited 2021 Mar 03]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123318.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Isvén U. Sanddynsmorfologi och kusterosion i Laholmsbukten, Hallands län. [Thesis]. Stockholm University; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123318

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

28. Fortuijn, Lars (author). The effects of climate change on coastal management in the Hondsbossche Dunes: Analysis and modeling of aeolian sediment transport and dune growth.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:dac23e4a-a241-405e-9680-ae54852de629

► In 2003, it was established that the sea dike between Petten and Camperduin was insufficiently safe. To ensure the safety of the hinterland against flooding,… (more)

▼ In 2003, it was established that the sea dike between Petten and Camperduin was insufficiently safe. To ensure the safety of the hinterland against flooding, this part of the Dutch sea defence system needed to be strengthened. During the design process, the most favourable variant was to construct a dune and beach system in front of the sea dike, which was constructed soon after, and finished in 2015. This changed the 'hard' sea defence to a 'soft' one, linking the beaches and dunes in the north and south with each other. Thereby not only increasing the safety of this part of the coast, but also providing a new area reserved for recreation and nature. The change from a hard to a soft coastal system fundamentally changes the characteristics of the area. Where the old sea dike was a static structure, the newly constructed sandy beach and dune system is very dynamic in nature. The change in properties of this coastal defence stretch brings the question how the HD (Hondsbossche Dunes) can best be maintained to ensure its functions as a sea defence now and in the future. The answer to this question requires insight in the processes relevant to aeolian sediment transport in general, and for the HD in specific. With the knowledge of what processes are important for coastal dune growth in the HD, a model can be selected to make predictions on the likely development of the HD in the future. Aeolian sediment transport, much like hydrodynamic sediment transport, can be described as a balance between forcing and resistance against forcing. The most important factors which govern the dynamics of dune growth as a consequence of aeolian sediment transport are: wind speed and direction, grain size, humidity, sediment availability, beach slope, and vegetation. Especially vegetation (marram grass) is important, as it stabilizes the dunes with its roots and rhizomes below ground, and by locally decreasing the wind velocity with the biomass above ground. The above ground component of the marram grass not only stabilizes the present sediment, it also accommodates a sheltering effect for any incoming sand grains. Dune growth rate is the sum of incoming and outgoing aeolian sediment transport rates. For a healthy dune system, this must be a positive value, as this process negates the effect of dune erosion as a consequence of storm events. In the period between 2015-2018, positive dune growth rates have been observed. An alongshore dune growth velocity gradient has been found, with the highest growth rate being in the south. This is due to a combination of difference in vegetation health (being poorer in the north), and the orientation of the dunes in relation to the average wind direction (more onshore directed in the south). The dune growth rate has decreased over time, but has remained positive over the regarded period. This is due to the eroding beach, which decreases the sediment availability for aeolian transport. Another factor is the… Advisors/Committee Members: Goessen, P. (mentor), de Vries, Sierd (mentor), Aarninkhof, Stefan (graduation committee), Reinders, Kristina (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: dune; Dune development; dune growth; Aeolian sediment transport; Vegetation; coastal; Coastal Engineering; cellular automata; DuBeVeg; AeoLiS; Aeolus; coastal management; Sea level rise; wind

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

APA (6^th Edition):

Fortuijn, L. (. (2018). The effects of climate change on coastal management in the Hondsbossche Dunes: Analysis and modeling of aeolian sediment transport and dune growth. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:dac23e4a-a241-405e-9680-ae54852de629

Chicago Manual of Style (16^th Edition):

Fortuijn, Lars (author). “The effects of climate change on coastal management in the Hondsbossche Dunes: Analysis and modeling of aeolian sediment transport and dune growth.” 2018. Masters Thesis, Delft University of Technology. Accessed March 03, 2021. http://resolver.tudelft.nl/uuid:dac23e4a-a241-405e-9680-ae54852de629.

MLA Handbook (7^th Edition):

Fortuijn, Lars (author). “The effects of climate change on coastal management in the Hondsbossche Dunes: Analysis and modeling of aeolian sediment transport and dune growth.” 2018. Web. 03 Mar 2021.

Vancouver:

Fortuijn L(. The effects of climate change on coastal management in the Hondsbossche Dunes: Analysis and modeling of aeolian sediment transport and dune growth. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 03]. Available from: http://resolver.tudelft.nl/uuid:dac23e4a-a241-405e-9680-ae54852de629.

Council of Science Editors:

Fortuijn L(. The effects of climate change on coastal management in the Hondsbossche Dunes: Analysis and modeling of aeolian sediment transport and dune growth. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:dac23e4a-a241-405e-9680-ae54852de629

29. Navarro-Pons, Marina. Modelización de la evolución morfodinámica de la duna de Valdevaqueros (t.m. Tarifa) mediante la aplicación de funciones empíricas ortogonales a corto, medio y largo plazo.

Degree: 2011, Universidad de Cádiz

URL: http://hdl.handle.net/10498/15040

► Extreme wind conditions generated near the Strait of Gibraltar (SW Spain) have given rise to the transgressive Valdevaqueros dunefield. The dune advance has resulted in… (more)

▼ Extreme wind conditions generated near the Strait of Gibraltar (SW Spain) have given rise to the transgressive Valdevaqueros dunefield. The dune advance has resulted in gradual invasion of the adjacent road and ecosystem. Despite restoration and control activities performed within the last decades, strong east winds have favoured dune destabilisation. The current work focuses on analyzing the dune profile evolution in the long term (years), medium term (months), short term (days) and very short term (hours). Topographic data, which were collected with a total station and a differential GPS from 1995 to 2009, were interpreted from reconstructed Empirical Orthogonal Functions (EOF). This method provides an objective way to identify the mean dune profile and therefore, to recognize morphodynamic dune changes and tendencies. Wind, humidity, rain and temperature effects on the dune behaviour were analysed from the Tarifa meteorological station. Furthermore, a sand trap was placed on three different dune profile areas during 30 min, obtaining that the sand transport at the crest was twice the amount of the sand collected at the windward and near six times greater than the sand measured at the dune foot. Sand transport rates of 140 m3 m-1 year-1, 25.5–36.5 m3 m−1 month−1, 22.52 m3 m−1 day−1 and 0.93 m3 m−1 h−1 were measured for the long-term, medium-term, short-term and very short-term periods, respectively. During an eleven-year period, the average migration rate was found to be of 17.5 m year-1, although the very short term monitoring under a severe easterly sandstorm demonstrated that the dune brink was able to experience an advance of 1.75 m in only 24 h. These values were compared with the theoretical sand transport rate for Valdevaqueros dune, based on the classic Bagnold’s equation as well as other more recent formulae, to obtain a ratio between the real and the theoretical rates for each study period. These results together with the sand drift potential following the Fryberger’s method (up to 10,000 vector units) demonstrate that Valdevaqueros is a dunefield with one of the highest sand transport capacities in Europe. Advisors/Committee Members: Muñoz-Perez, Juan J. (advisor), Física Aplicada (other).

Subjects/Keywords: Dune mobility; Sand drift potential; DGPS levelling; Profile changes; Transport rates; EOF method; Coastal dune; Transgressive migrating dune; Migration rates; Meteorological conditions; Profile evolution

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

APA (6^th Edition):

Navarro-Pons, M. (2011). Modelización de la evolución morfodinámica de la duna de Valdevaqueros (t.m. Tarifa) mediante la aplicación de funciones empíricas ortogonales a corto, medio y largo plazo. (Thesis). Universidad de Cádiz. Retrieved from http://hdl.handle.net/10498/15040

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Navarro-Pons, Marina. “Modelización de la evolución morfodinámica de la duna de Valdevaqueros (t.m. Tarifa) mediante la aplicación de funciones empíricas ortogonales a corto, medio y largo plazo.” 2011. Thesis, Universidad de Cádiz. Accessed March 03, 2021. http://hdl.handle.net/10498/15040.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Navarro-Pons, Marina. “Modelización de la evolución morfodinámica de la duna de Valdevaqueros (t.m. Tarifa) mediante la aplicación de funciones empíricas ortogonales a corto, medio y largo plazo.” 2011. Web. 03 Mar 2021.

Vancouver:

Navarro-Pons M. Modelización de la evolución morfodinámica de la duna de Valdevaqueros (t.m. Tarifa) mediante la aplicación de funciones empíricas ortogonales a corto, medio y largo plazo. [Internet] [Thesis]. Universidad de Cádiz; 2011. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10498/15040.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Navarro-Pons M. Modelización de la evolución morfodinámica de la duna de Valdevaqueros (t.m. Tarifa) mediante la aplicación de funciones empíricas ortogonales a corto, medio y largo plazo. [Thesis]. Universidad de Cádiz; 2011. Available from: http://hdl.handle.net/10498/15040

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Humboldt State University

30. Green, Shayne. Structure and dynamics of a coastal dune forest at Humboldt Bay, California.

Degree: MA, Biology, 1999, Humboldt State University

URL: http://hdl.handle.net/10211.3/161079

► Forest stands occurring on coastal dunes along the western margin of Humboldt Bay, California are isolated fragments of a regional forest type that stretches discontinuously… (more)

▼ Forest stands occurring on coastal dunes along the western margin of Humboldt Bay, California are isolated fragments of a regional forest type that stretches discontinuously along the Pacific Coast from northern California to Alaska. I used aerial photographs to stratify the forest at Lanphere Dunes into 3 stand types. Using fixed-radius (13.2 m) circular plots, I sampled these types to determine their composition (overstory and understory), size structure (basal area, height, and sapling, seedling, snag and tree density), and age structure. Beach pine, Sitka spruce, and mixed-species types exhibit significant compositional and structural differences. The beach pine type is distinguished not only by the importance of beach pine in the overstory, but by high stem density, low basal area, and the overall importance of bearberry in the understory. The Sitka spruce type is characterized by the importance of Sitka spruce in the overstory, low stem density, high basal area, and the importance of twinberry and wax myrtle in the understory. In the mixed-species type, beach pine and Sitka spruce are almost equally important among an overstory layer that often includes grand fir. This type exhibits stem density and basal area values intermediate to those of the other two types. Age structure differences among the types are non-significant, suggesting that each type has a similar disturbance history as the others. Within each type, beach pine and/or Sitka spruce populations consist of numerous age classes that are normally distributed. Age class chronologies correspond (in part) among types and among spatially disjunct plots of the pine type. Small patches of forest (<0.04 ha) typically include trees representing numerous age classes, and age class distributions (i.e. number and size) vary over larger areas. Patch dynamics are apparently complex and affect forest development at a variety of spatial and temporal scales. These age and spatial patterns support the hypothesis that small-scale windfall events have been the most important disturbance factor underlying seedling establishment over the last 150 years. Though regeneration levels are currently low, beach pine stands generally appear to be self-replacing over a period of many decades. Advisors/Committee Members: Sawyer, John O..

Subjects/Keywords: Sand dune plants; Sand dune ecology; California; Humboldt Bay

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APA (6^th Edition):

Green, S. (1999). Structure and dynamics of a coastal dune forest at Humboldt Bay, California. (Masters Thesis). Humboldt State University. Retrieved from http://hdl.handle.net/10211.3/161079

Chicago Manual of Style (16^th Edition):

Green, Shayne. “Structure and dynamics of a coastal dune forest at Humboldt Bay, California.” 1999. Masters Thesis, Humboldt State University. Accessed March 03, 2021. http://hdl.handle.net/10211.3/161079.

MLA Handbook (7^th Edition):

Green, Shayne. “Structure and dynamics of a coastal dune forest at Humboldt Bay, California.” 1999. Web. 03 Mar 2021.

Vancouver:

Green S. Structure and dynamics of a coastal dune forest at Humboldt Bay, California. [Internet] [Masters thesis]. Humboldt State University; 1999. [cited 2021 Mar 03]. Available from: http://hdl.handle.net/10211.3/161079.

Council of Science Editors:

Green S. Structure and dynamics of a coastal dune forest at Humboldt Bay, California. [Masters Thesis]. Humboldt State University; 1999. Available from: http://hdl.handle.net/10211.3/161079

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