Bottom Reflection Loss in an Area in the Hatteras Abyssal Plain

Abstract

Bottom reflection loss measurements were made along three tracks in a 1 degree quadrangle, designated Area C, extending from 33 deg 00' to 34 deg 00'N and 71 deg 00' to 72 deg 00'W. The area lies along the northwestern edge of the Hatteras Abyssal Plain. Explosive sound sources were used and, based on peak pressure, bottom reflection loss values were computed. Bottom loss at 1 and 3.5 kc for grazing angles between 20 and 60 degrees are reported. The results indicate that the bottom is frequency selective, which is suggested by the frequency crossings or inverse relationship between bottom loss and frequency exhibited by the data along one track. A uniform dependence of bottom loss on grazing angle is not observed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
ADA071232

Entities

People

  • Robert S. Winokur

Organizations

  • Naval Oceanographic Office

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Signals
  • Bottom Loss
  • Composite Materials
  • Crossings
  • Data Reduction
  • Equations
  • Frequency
  • Grazing
  • Grazing Angles
  • Loran
  • Losses
  • Magnetic Tape
  • Measurement
  • Recording Systems
  • Reflection
  • Tape Recorders
  • Tape Recording

Readers

  • Oceanography.
  • Radar Systems Engineering.