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Tidal discharge asymmetry in a salt marsh drainage system 1, 2
Author(s) -
Boon John D.
Publication year - 1975
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1975.20.1.0071
Subject(s) - salt marsh , marsh , hydrology (agriculture) , current (fluid) , asymmetry , environmental science , channel (broadcasting) , drainage , flood myth , oceanography , flow (mathematics) , geology , wetland , ecology , mechanics , geotechnical engineering , physics , geography , engineering , archaeology , quantum mechanics , electrical engineering , biology
Tidal discharge and area‐averaged current speed were measured over complete tidal cycles at the entrance to a salt marsh drainage system near Wachapreague, Virginia. A pronounced asymmetry in curves of discharge and current speed through time was observed which can be simulated by a model incorporating semidiurnal tides and “overtides” in conjunction with marsh and channel storage relationships. As a persistent feature in marsh channel flow relationships, the asymmetry, along with an apparent difference in flood and ebb maxima, may have a systematic, long term influence on the net transport of suspended matter entering and leaving natural marshes.