scholarly journals The effect of sediment stratification on tidal dynamics and sediment transport patterns

2005 ◽  
Vol 110 (C3) ◽  
Author(s):  
Do-Seong Byun ◽  
Xiao Hua Wang
Keyword(s):  
Sediment Transport ◽  
Tidal Dynamics ◽  
Transport Patterns ◽  
Sediment Stratification

Satellite Observations of Sediment Transport Patterns in the Lac Saint-Pierre Region of the St. Lawrence River

1988 ◽  
Vol 23 (2) ◽  
pp. 243-252 ◽  
Author(s):  
J.E. Bruton ◽  
J.H. Jerome ◽  
R.P. Bukata
Keyword(s):  
Sediment Transport ◽  
Close Relationships ◽  
Satellite Observations ◽  
Near Surface ◽  
Thermal Data ◽  
Digital Formats ◽  
Transport Patterns ◽  
Mutually Independent ◽  
River Corridor ◽  
St Lawrence River

Abstract Satellite data from Landsats 4 and 5 were utilized to delineate the seasonal variations of sediment transport zones in the Lac Saint-Pierre region of the St. Lawrence River corridor. A seasonally cyclic succession of patterns displaying persistent, mutually independent, and extensive (in both space and time) turbidity zones was clearly in evidence. Visible and thermal data in both imagery and digital formats were used to show the close relationships existing among the distinct zonal synoptic patterns, the bathymetry of lake and river, and the near surface aquatic temperatures.

Monitoring sediment transport patterns on an energetic ebb-tidal delta using dual-signature tracers

2018 ◽  
Author(s):  
Stuart Pearson ◽  
Bram van Prooijen ◽  
Jack Poleykett ◽  
Matthew Wright ◽  
Kevin Black ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Ebb Tidal Delta ◽  
Transport Patterns

Sediment transport patterns on the Estremadura Spur continental shelf: Insights from grain-size trend analysis

2014 ◽  
Vol 93 ◽  
pp. 28-32 ◽  
Author(s):  
Maria Balsinha ◽  
Carlos Fernandes ◽  
Anabela Oliveira ◽  
Aurora Rodrigues ◽  
Rui Taborda
Keyword(s):  
Grain Size ◽  
Sediment Transport ◽  
Continental Shelf ◽  
Trend Analysis ◽  
Transport Patterns ◽  
Grain Size Trend Analysis

scholarly journals Effects of Cascade Reservoir Systems on the Longitudinal Distribution of Sediment Characteristics: A Case Study of the Heihe River Basin

2021 ◽  
Author(s):  
Yu Wang ◽  
Bao-long Li ◽  
Juan-juan Liu ◽  
Qi Feng ◽  
Wei Liu ◽  
...  
Keyword(s):  
Grain Size ◽  
Sediment Transport ◽  
Longitudinal Distribution ◽  
Heihe River ◽  
Hydrodynamic Conditions ◽  
Sediment Grain Size ◽  
Cascade Reservoirs ◽  
Grain Size Distributions ◽  
Transport Patterns ◽  
The Impact

Abstract Spatial variations in grain-size parameters can reflect river sediment transport patterns and depositional dynamics. Therefore, 22 surficial sediment samples taken from the Heihe River and its cascade reservoirs were analyzed to better understand the impact of cascade reservoir construction on sediment transport patterns in inland rivers in China. The results showed that the longitudinal distribution of sediment grain size in the Heihe River was significantly affected by the influence of the cascade reservoirs. The grain size of the reservoir sediments within the cascade reservoir system was much lower than that of sediments in the natural river section, and the sediments in the natural river were well sorted, exhibiting leptokurtosis and positive or very positive skew. The lower reaches of the dammed river experienced strong erosion, and the grains of the bed sediments were coarse and poorly sorted; the grain-size distributions were more positively skewed and exhibited leptokurtosis. The backwater zone of the reservoir was influenced by both backwater and released water, and the sediment grain size was between the grain size of the natural river and that of the lower reaches of the dam; these sediments were moderately well sorted and had a positively skewed, leptokurtic grain-size distribution. Sedimentary environmental analysis revealed that the characteristics of the sediment grain size in an upstream tributary of the Heihe River were more influenced by source material than by hydrodynamic conditions, while the grain-size characteristics of the mainstream sediments were controlled mainly by hydrodynamic conditions.

scholarly journals Tidal current power effects on nearby sandbanks: a case study in the Race of Alderney

2020 ◽  
Vol 378 (2178) ◽  
pp. 20190503 ◽  
Author(s):  
Luke S. Blunden ◽  
Stephen G. Haynes ◽  
AbuBakr S. Bahaj
Keyword(s):  
Sediment Transport ◽  
Tidal Energy ◽  
Sand Wave ◽  
Sand Transport ◽  
Tidal Dynamics ◽  
Tidal Flows ◽  
Tidal Turbine ◽  
Turbine Arrays ◽  
Sediment Model

A validated numerical model of tidal flows and sediment transport around the Alderney South Banks was used to investigate the potential effects of large (300 MW) tidal turbine arrays at different locations in Alderney territorial waters. Two methods were used, firstly looking at hydrodynamic changes only and secondly modelling sediment transport over a non-erodible bed. The baseline hydrodynamic model was validated relative to ADCP velocity data collected in the immediate vicinity of the sandbank. Real-world sand transport rates were inferred from sand-wave migrations and agree favourably with sediment transport residuals calculated from model outputs. Outputs from the sediment model reproduced realistic morphological behaviours over the bank. Seventeen different locations were considered; most did not result in significant hydrodynamic changes over the South Banks; however, three array locations were singled out as requiring extra caution if development were to occur. The results provide a case for optimizing the array locations for twin objectives of maximizing array power and minimizing impacts on the sandbanks. This article is part of the theme issue ‘New insights on tidal dynamics and tidal energy harvesting in the Alderney Race’.

scholarly journals Deep‐water sediment transport patterns and basin floor topography in early rift basins: Plio‐Pleistocene syn‐rift of the Corinth Rift, Greece

2019 ◽  
Vol 32 (5) ◽  
pp. 1184-1212
Author(s):  
Martin Muravchik ◽  
Gijs A. Henstra ◽  
Gauti T. Eliassen ◽  
Rob L. Gawthorpe ◽  
Mike Leeder ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Deep Water ◽  
Rift Basins ◽  
Basin Floor ◽  
Transport Patterns

scholarly journals Sea Level Rise Will Drive Divergent Sediment Transport Patterns on Fore Reefs and Reef Flats, Potentially Causing Erosion on Atoll Islands

2020 ◽  
Vol 125 (10) ◽  
Author(s):  
James F. Bramante ◽  
Andrew D. Ashton ◽  
Curt D. Storlazzi ◽  
Olivia M. Cheriton ◽  
Jeffrey P. Donnelly
Keyword(s):  
Sediment Transport ◽  
Sea Level Rise ◽  
Sea Level ◽  
Transport Patterns

Dynamics of secondary airflow and sediment transport over and in the lee of transverse dunes

2002 ◽  
Vol 26 (1) ◽  
pp. 47-75 ◽  
Author(s):  
Ian J. Walker ◽  
William G. Nickling
Keyword(s):  
Shear Stress ◽  
Sediment Transport ◽  
Conceptual Model ◽  
Research Literature ◽  
Near Surface ◽  
Law Of The Wall ◽  
Sedimentary Dynamics ◽  
Transport Patterns ◽  
And Migration ◽  
Transverse Dunes

Recent research literature on secondary airflow and sediment transport patterns over flow-transverse dunes is reviewed. Various issues surrounding the behaviour, modelling and sedimentological implications of near-surface airflow dynamics over dunes are discussed, including: the Law of the Wall; the Jackson and Hunt airflow model; the effects of streamline compression, acceleration and curvature on stoss slope shear stress; and, in particular, recent efforts to characterize secondary lee-side airflow patterns. A revised conceptual model of lee-side airflow is presented and areas for further research are identified regarding the implications of such patterns for dune sedimentary dynamics, morphology, and migration.

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