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

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.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1994
Accession Number
ADA289331

Entities

People

  • J. J. Fredericks
  • John H. Trowbridge
  • Yogesh C. Agrawal

Organizations

  • Woods Hole Oceanographic Institution

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Army Corps Of Engineers
  • Boundary Layer
  • Clocks
  • Data Analysis
  • Data Processing
  • Engineering
  • Engineers
  • Flow
  • Fluid Flow
  • Frequency
  • Instrumentation
  • Measurement
  • North Carolina
  • Orientation (Direction)
  • Plastic Explosives
  • Research Facilities
  • Statistical Analysis

Readers

  • Acoustical Oceanography.
  • Coastal Oceanography
  • Fluid Dynamics.

Technology Areas

  • Directed Energy