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Comparisons between acoustic measurements and predictions of the bedload transport of marine gravels
Author(s) -
WILLIAMS JON J.,
THORNE PETER D.,
HEATHERSHAW ANTHONY D.
Publication year - 1989
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1989.tb01534.x
Subject(s) - bed load , geology , flow (mathematics) , turbulence , magnitude (astronomy) , sediment transport , geomorphology , meteorology , sediment , geometry , mathematics , geography , physics , astronomy
Continuous, detailed records of marine gravel transport have been obtained acoustically and compared with bedload transport rates ( q b ) predicted by five bedload transport equations using measurements of the near‐bed turbulent current flow. When mean flow data are used in these equations, total q b estimates are similar to those measured. However, when instantaneous flow data are used, total q b is over‐estimated by approximately one order‐of‐magnitude. Based on the acoustic measurements, an empirical equation has been obtained that gives accurate estimates of total q b over a tidal cycle and simulates well the intermittent characteristics of marine bedload transport.