Accession Number : ADA289331

Title :   Observations of Near-Bottom Flow in a Wave-Dominated Nearshore Environment.

Descriptive Note : Technical rept.,

Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA

Personal Author(s) : Fredericks, J. J. ; Trowbridge, John H. ; Agrawal, Yogesh C.

PDF Url : ADA289331

Report Date : FEB 1994

Pagination or Media Count : 168

Abstract : To provide observational data for analysis of near-bottom. wave-induced flows, a downward-looking laser Doppler velocimeter LDV) was deployed to profile the near-bed velocity structure of a six meter water column at a site just outside the surfzone off the coast of North Carolina. 90 second 'snap-shots' of the velocity at six elevations below 20 cm above bottom were measured at 25 Hz while pressure was concurrently measured at 126 Cm above bottom. The near-bottom data were supplemented with a benthic acoustic stress sensor (BASS) at approximately 20 Cm above bottom which concurrently measured velocity components at 10 Hz. The purposes of this report are to document the collection, processing and archival of these data and to present the profiles for evaluation.

Descriptors :   *OCEAN WAVES, *OCEAN TIDES, VELOCITY, MEASUREMENT, COASTAL REGIONS, OCEAN CURRENTS, PRESSURE GAGES, FLOW RATE, ATLANTIC OCEAN, COASTAL ENGINEERING, OPTICAL DETECTORS, NORTH CAROLINA, OCEAN BOTTOM, TRIPODS, LASER VELOCIMETERS, ACOUSTIC DETECTORS.

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE