Sediment response to inner shelf hydraulic regimes. Progress report, 1 February 1975--1 November 1975

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Abstract
The current regime of the inner continental shelf and its effect on the shallow nearshore sea floor is poorly known, yet a knowledge of sediment transport in this area is crucial to proper design of coastal and offshore facilities. This program includes an array of current and wave sensors to monitor bottom currents in a linear shoal field off Assateague Island, Maryland. Prototype devices scheduled for installation at this site include an acoustic sediment transport probe and a pore-water pressure sensor to monitor stability of sand at the site. All data are sent via telemetry from a buoy to the shore-side station containing a data logger and transmitter. Transmissions are for 30 minutes every 4 hours. To date, data are restricted to fairweather (low wave) conditions. Net current flow appears to parallel to, or obliquely away from, the shore. Sediment textural analyses from this area support the theory of net offshore transport. Wave refraction programs and spectral analyses of wave records provide a measure of energy expended along this coastal segment.

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