Towards Understanding and Exploiting Effects of Sediment Heterogeneity on Seabed Reflection and Scattering

Abstract

Marine and terrestrial life exploit sound propagation to communicate and sense the ocean environment. Often, the seabed properties have a profound influence on sound propagation. The objectives of this research are to measure a) depth dependent structure in muddy sediments, b) roughness and/or volume heterogeneity and c) frequency-dependent sound speed and attenuation in in-situ sediments from 0.1-10 kHz. Significant progress was made in untangling the depth- and frequency-dependence of muddy sediments in the New England Mud Patch as well as development of a technique to image sediment heterogeneities.

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Document Details

Document Type
Technical Report
Publication Date
Mar 25, 2020
Accession Number
AD1156519

Entities

People

  • W. Charles (Wilbur) Holland, Jr.

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Autonomy
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Measurement
  • Acoustic Properties
  • Acoustics
  • Autonomous Underwater Vehicles
  • Earth Sciences
  • Frequency
  • Geometry
  • Grain Size
  • Information Science
  • Measurement
  • New England
  • Ocean Environments
  • Reflection
  • Two Dimensional
  • Underwater Vehicles
  • Universities
  • Wide Angles

Readers

  • Coastal Oceanography
  • Systems Analysis and Design
  • Wave Propagation and Nonlinear Chaotic Dynamics.