Bed-Load Validation for ISSDOTv2

Bed-Load Validation for ISSDOTv2

AbstractBed-load transport is an important process impacting riverine morphology, but until recently it has proven difficult to measure in large sand-bed rivers. Integrated Section, Surface Difference Over Time, version 2 (ISSDOTv2) method provides a means of quantifying the bed load in large sand-b...

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Veröffentlicht in:Journal of hydraulic engineering (New York, N.Y.) N.Y.), 2022-03, Vol.148 (3)
Hauptverfasser: McAlpin, Tate O, Wren, Daniel G, Jones, Keaton E, Abraham, David D, Kuhnle, Roger A
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Sprache:eng
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Bed load
Flumes
High flow
Low flow
Rivers
Sand
Sediment transport
Technical Papers
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container_issue 3
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container_title Journal of hydraulic engineering (New York, N.Y.)
container_volume 148
creator McAlpin, Tate O
Wren, Daniel G
Jones, Keaton E
Abraham, David D
Kuhnle, Roger A
description AbstractBed-load transport is an important process impacting riverine morphology, but until recently it has proven difficult to measure in large sand-bed rivers. Integrated Section, Surface Difference Over Time, version 2 (ISSDOTv2) method provides a means of quantifying the bed load in large sand-bed rivers. A series of flume experiments, which included frequent measurements of bed topography and an independent measurement of bed load across a range of flows, was used to provide validation for the ISSDOTv2 method. The mean difference between the ISSDOTv2 calculations and the estimated bed load was 5.6% (high flow), 12.9% (medium flow), and 56% (low flow), indicating improved accuracy for higher flow and transport conditions. It was also found that the ISSDOTv2 method responded appropriately to rapid step-downs in flow, as indicated by agreement between ISSDOTv2 load results and accompanying independent measurements of bed load.
doi_str_mv 10.1061/(ASCE)HY.1943-7900.0001968
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1943-7900
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source American Society of Civil Engineers:NESLI2:Journals:2014
subjects Bed load
Flumes
High flow
Low flow
Rivers
Sand
Sediment transport
Technical Papers
title Bed-Load Validation for ISSDOTv2
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