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Hydrodynamic description of the erosional development of drainage patterns

Hydrodynamic description of the erosional development of drainage patterns The erosional development of drainage networks is analyzed by modeling two‐dimensional flow of water and sediment over a bare slope. Deterministic equations of mass and momentum conservation are coupled with random fluctuations of sediment pickup and transportation processes acting at the hydrodynamic scale. These fluctuations are then shown to be able to provide an active source of channelization at the hillslope scale. Controlled experiments are also carried out by simulation runs aimed at investigating model performance (1) to describe formation of natural drainage patterns, (2) to account for different factors (i.e., soil characteristics, hillslope geometry, and rainfall intensity) which control network formation and development, and (3) to reproduce differentiation of drainage patterns due to above factors. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Water Resources Research Wiley

Hydrodynamic description of the erosional development of drainage patterns

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References (29)

Publisher
Wiley
Copyright
Copyright © 1989 by the American Geophysical Union.
ISSN
0043-1397
eISSN
1944-7973
DOI
10.1029/WR025i002p00319
Publisher site
See Article on Publisher Site

Abstract

The erosional development of drainage networks is analyzed by modeling two‐dimensional flow of water and sediment over a bare slope. Deterministic equations of mass and momentum conservation are coupled with random fluctuations of sediment pickup and transportation processes acting at the hydrodynamic scale. These fluctuations are then shown to be able to provide an active source of channelization at the hillslope scale. Controlled experiments are also carried out by simulation runs aimed at investigating model performance (1) to describe formation of natural drainage patterns, (2) to account for different factors (i.e., soil characteristics, hillslope geometry, and rainfall intensity) which control network formation and development, and (3) to reproduce differentiation of drainage patterns due to above factors.

Journal

Water Resources ResearchWiley

Published: Feb 1, 1989

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