Temporal lag effect in bed load sediment transport
- 19 January 1990
- journal article
- research article
- Published by Taylor & Francis in Journal of Hydraulic Research
- Vol. 28 (1) , 5-23
- https://doi.org/10.1080/00221689009499144
Abstract
Temporal lag effects, which are viewed as the inability of an alluvial system to immediately respond to changing flow conditions, are investigated under bed load sediment transport conditions. Temporal lag effects are investigated experimentally and a temporal lag model is formulated. The temporal response ofthe alluvial system is characterised by a single variable, the equivalent steady flow rate. An impulse model is used to develop a general temporal solution. The performance of the temporal lag model is tested against measured data and is verified. A numerical model which incorporates the temporal lag model and its performance are also briefly described.Keywords
This publication has 10 references indexed in Scilit:
- Spatial lag effects in bed load sediment transportJournal of Hydraulic Research, 1989
- Movable bed roughness in unsteady oscillatory flowJournal of Geophysical Research: Oceans, 1982
- Unsteady flow in straight alluvial streams. Part 2. Transition from dunes to plane bedJournal of Fluid Mechanics, 1981
- Bed forms and unsteady processes: Some concepts of classification and response illustrated by common one‐way typesEarth Surface Processes and Landforms, 1976
- Computational models for dune time-lag: General ideas, difficulties, and early resultsSedimentary Geology, 1976
- Bed Form Response to Nonsteady FlowsJournal of the Hydraulics Division, 1975
- Resistance to Reversing Flows Over Movable BedsJournal of the Hydraulics Division, 1969
- Quantitative Definition of Beginning of Bed MovementJournal of the Hydraulics Division, 1969
- Bed forms in the Lower Red Deer River, AlbertaJournal of Hydrology, 1968
- Depth-Discharge Relations in Alluvial ChannelsJournal of the Hydraulics Division, 1962