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LOCAL FLOW ACCELERATIONS IN RIVERS 1
Author(s) -
Woudt Bessel D.
Publication year - 1981
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1981.tb01262.x
Subject(s) - channel (broadcasting) , flow (mathematics) , hydrology (agriculture) , geology , abandonment (legal) , dissipation , open channel flow , environmental science , geomorphology , mechanics , geotechnical engineering , physics , engineering , political science , law , thermodynamics , electrical engineering
The geometry and formation of and the energy dissipation in flow accelerations in short steep reaches have been assessed, the latter as to its contribution to the energy expenditure in a long channel reach. An analysis of river gradients, aerial photos and additional field surveys has shown that flow accelerations can (1) originate naturally and sequentially from bars across a channel and nonsequentially from channel abandonment and channelside deposits and (2) be induced by a bankside groyne.