Depths of modern coastal sand clinoforms by Neil C. Mitchell, Gerhard Masselink, John M.
Huthnance, Luis M. Fernández-Salas and Francisco J. Lobo
Wednesday, August 1, 2012
Highlights
The clinoform is a quintessential geometric form of many
subaqueous depositional systems.
In this paper, Mitchell et al.
analyze a series of sandy, subtidal marine clinoforms extending from steep
coasts today, and compare the depth of the clinoform rollover to wave climate. Although other factors such as wind
driven currents (such as downwelling) and tidal currents can influence sediment
transport, the analysis reveals that the influences of wave-induced bed shear
stress for the upper 10th percentile of conditions dominate the
position of rollovers in these systems.
The results suggest that the position of rollover is not related simply
to water depth, and as such, should be used only very cautiously as paleo-sea
level indicators.
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