Analysis of Acoustic Propagation, Bubble Field and Environmental Data from the Scripps Inshore Bubble Field Experiment

Abstract

This experiment was designed to assess the role of bubbles in modifying the high frequency acoustic properties of the near surf environment. The observations included measurement of bubble size distributions in the surf zone and also on a frame deployed offshore by NRL, together with turbulence, wave elevation, 100 kHz propagation, acoustic Doppler, bubble imaging and related environmental measurements. This extensive data set has provided a basis for detailed modeling of the bubble advection by currents, redistribution by bottom generated turbulence, dissolution and modification by buoyancy effects. The results are compared with measured bubble populations at the NRL site and provide a means for deriving acoustical properties of the water column. In particular, the acoustical attenuation associated with bubbles is derived at two different frequencies.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1999
Accession Number
ADA366104

Entities

People

  • David M. Farmer

Organizations

  • Institute of Ocean Sciences

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustic Attenuation
  • Acoustic Propagation
  • Acoustic Properties
  • Advection
  • Attenuation
  • Boundary Layer
  • Buoyancy
  • Frequency
  • Layers
  • Measurement
  • Observation
  • Offshore
  • Physics Laboratories
  • Regions
  • Shores
  • Surface Waves
  • Turbulence

Fields of Study

  • Environmental science

Readers

  • Acoustical Oceanography.
  • Coastal Oceanography
  • Underwater engineering and Marine Technology.