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Flow and Density Driven Sediment Dynamics shown by Dual Frequency Acoustic Sounder of the York River Estuary, Chesapeake Bay, Virginia
Clark, Issac
Clark, Issac
Abstract
A Dual frequency acoustic sounder was used for testing sediment erodability throughout the tidal cycle in the Clay Bank area, York River, Chesapeake Bay, Virginia May and June 20. A low density high moisture content sediment layer, dubbed the fluff layer, was found to have eroded at max flow velocities during the ebb tidal cycle. The suspended sediment was not definitively seen to have resuspended and was not definitively seen to have redeposited. The dual frequency acoustic sounder was to be ground-truthed with cores taken from transects to confirm the existence of the fluff layer as well as a potential shell layer. The timing of the coring did not coincide with the data collection of the transects due to equipment and labor restrictions, which did not allow for the confirmation of either the fluff layer or the shell layer in conjunction with the dual frequency acoustic sounder.
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2012-01-01
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Geology