Bottom Grain Gas and Roughness Technique (BOGGART) Version 3.0: Bottom Backscatter Model User's Guide.

Abstract

A user's guide has been developed for BOGGART, a model for acoustic backscatter from marine sediments, developed at Applied Research Laboratories, The University of Texas at Austin (ARL:UT), with support from the Naval Research Laboratory at Stennis Space Center (NRL/SSC). The model, named for bottom grain gas and roughness technique, computes the total backscattering strength as an incoherent sum of contributions from three components. They are (1) scattering from sediment grains, (2) scattering from trapped gas bubbles within the sediment, and (3) scattering from interface roughness. The grain scattering is modeled semiempirically, based on the diffusion equation, in lieu of using a theoretical model which is under development. The gas bubble and roughness-scattering components are theoretical. Acoustic propagation in the sediment is modeled by way of the Biot theory for poroelastic media. This report is a user's description for BOGGART, version 3.0.

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Document Details

Document Type
Technical Report
Publication Date
Jun 04, 1996
Accession Number
ADA322019

Entities

People

  • Frank A. Boyle
  • Nicholas P. Chotiros

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustic Waves
  • Acoustics
  • Backscattering
  • Contracts
  • Energy Transfer
  • Equations
  • Frequency
  • Grain Size
  • Grazing Angles
  • Measurement
  • Military Research
  • Naval Warfare
  • Physics
  • Physics Laboratories
  • Roughness
  • Scattering

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Computer Science.

Technology Areas

  • Space