Long-range Backscatter from the Mid-Atlantic Ridge

Abstract

Acoustic backscatter returns measured with a vertical source and horizontal receiving array are beamformed and charted to respective scattering sites on the western flank of the Mid-Atlantic Ridge (MAR). Well-defined patterns of high-level backscatter resembling bottom morphology occur within the direct path and at convergence zone ranges. Measured backscatter is compared with modeled two-way transmission loss using the wide-angle parabolic equation (PE) and high-resolution supporting bathymetry. The level of backscatter is found to be strongly dependent upon two-way transmission loss (TL).

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1994
Accession Number
ADA635723

Entities

People

  • Jonathan M. Berkson
  • Nicholas C. Makris

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustics
  • Backscattering
  • Cross Correlation
  • Frequency
  • Geometry
  • High Resolution
  • Measurement
  • Normal Distribution
  • Oceans
  • Orientation (Direction)
  • Scattering
  • Seabed
  • Sonar
  • Transmission Loss
  • Two Way Transmission
  • Wave Propagation
  • Waveforms

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Oceanography.