Sediment transport potential in a channelized floodplain

2020 ◽  
pp. 290-293
Author(s):  
S. Sumaiya ◽  
J.T. Schubert ◽  
J.A. Czuba
Keyword(s):  
Sediment Transport ◽  
Transport Potential

Sediment transport potential in a hydraulically connected river and floodplain‐channel system

2021 ◽  
Author(s):  
Sumaiya Sumaiya ◽  
Jonathan A. Czuba ◽  
John T. Schubert ◽  
Scott R. David ◽  
Graham H. Johnston ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Channel System ◽  
Transport Potential

Impacts of macro-turbulent flow on sediment transport potential during ice-covered and open-channel conditions

2020 ◽  
Author(s):  
Eliisa Lotsari ◽  
Maria Kämäri ◽  
Petteri Alho ◽  
Elina Kasvi
Keyword(s):  
Sediment Transport ◽  
Turbulent Flow ◽  
Turbulent Flows ◽  
Open Channel ◽  
Low Flow ◽  
The Arctic ◽  
Flow Structures ◽  
Channel Conditions ◽  
Total Sediment ◽  
Transport Potential

<p>Macro-turbulent flows during ice-covered and open-channel conditions, and their impacts on the total sediment transport, have not been studied widely in northern rivers. Previous studies have detected these processes, for example, only at the inlet area of one meander bend, or only during low discharge conditions. Thus, for understanding their impacts on the total sediment transport, it is needed to detect these macro-turbulent flow structures from a variety of cold region rivers, from multiple years, and also from a variety of different flow magnitude conditions. The pulses of high flow velocities related to these macro-turbulent structures may be important for determining the seasonal total sediment amount transported to the arctic ocean.</p><p> </p><p>The aim is 1) to detect the macro-turbulent flow in a meandering river at ice-covered low flow condition, and compare it to both high and low magnitude open-channel flow conditions. 2) Within a meander bend, the macro-turbulent flow will be compared between its inlet, apex and outlet sections. 3) The shear forces will be analyzed to detect the effects of macro-turbulent flow on potential sediment transport and channel development. The analyses are based on 5–10 minutes long moving boat Acoustic Doppler Current Profiler (ADCP) measurements from a meandering sub-arctic river. The measurements have been done in February and May during 2016–2019, and in September during 2016-2018. The preliminary results of this study are presented. The hypothesis is that the sediment transport potential of a sub-arctic river could be higher during all seasons than previously expected due to the pulses of high velocities related to macro-turbulent flow structures.</p>

Research of Sand Drift Potential and Wind Conditions in Xilamuren Grassland

2014 ◽  
Vol 955-959 ◽  
pp. 3499-3504
Author(s):  
Zheng Wen Yue ◽  
Rui Qiang Zhang ◽  
Tian Ming Gao
Keyword(s):  
Sediment Transport ◽  
Wind Direction ◽  
Wind Erosion ◽  
Sand Transport ◽  
Westerly Wind ◽  
Desert Grassland ◽  
Drift Potential ◽  
Variability Index ◽  
Annual Sediment ◽  
Transport Potential

Using the wind data in Xilamuren desert grassland by wind erosion monitoring system to record the years of 2011-2013 as the research foundations, through the statistics of wind and sand transport potential research, from aspect of the characteristics of blown sand environment Xilamuren desert grassland which can be shown the research area are mainly affected by the westerly, Northwest westerly wind or northwest wind three group interaction. The study area of annual sediment potential had mainly effected by westerly and Northwest westerly wind direction ,with wind direction variability index in 0.51°~ 0.61°, belonging to the intermediate ratio range of direction. Annual sediment potential was between 135.95VU ~214.1VU,belongs to the small and medium-sized wind environment. The spring sand transport potential and the resultant sand transporting potential than the other three seasons of sediment transport potential and the resultant sand transporting potential, the main direction of resultant sand transporting potential to Northwest westerly direction, wind direction variability index is relatively large. For spring grassland vegetation coverage rate is lowly, wind speed is large, characteristics of sand is belong to rich material, which should we to retain sand material through the appropriate protective measures to reduce wind erosion. So analyzing the wind regime and the theory of sediment transport potential calculation, provide scientific theoretical basis for the prevention and treatment of sand and harm to the Xilamuren grassland sand flow process.

Seasonal variations in erodibility and sediment transport potential in a mesotidal channel-flat complex, Willapa Bay, WA

2013 ◽  
Vol 60 ◽  
pp. S185-S197 ◽  
Author(s):  
Patricia L. Wiberg ◽  
Brent A. Law ◽  
Robert A. Wheatcroft ◽  
Timothy G. Milligan ◽  
Paul S. Hill
Keyword(s):  
Sediment Transport ◽  
Seasonal Variations ◽  
Willapa Bay ◽  
Transport Potential
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