Model-Data Comparison of Shallow Water Acoustic Reverberation in the East China Sea

Abstract

In this thesis, the Monterey-Miami Parabolic Equation (MMPE) model is used to generate predictions from numerical analysis of the reverberation loss structure and peak vertical correlation structure generated by the water/bottom interface, the bottom/sub-bottom interface, and the bottom volume for a shallow water environment. These predictions are then compared to the peak vertical correlation analysis of recorded data collected in an actual shallow water environment similar to the modeled environment. This experimental data was recorded by a 32-element vertical line array (VLA) that recorded the reverberant return generated by charges detonated over the continental shelf in the East China Sea as part of ASIAEX. A comparison is made between predictions and recorded data by analyzing trends in peak vertical correlation with decreasing bandwidth. The influences of interface roughness, bottom volume perturbations, and water volume turbulence on peak vertical correlation is also determined.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2003
Accession Number
ADA418561

Entities

People

  • Robert M. Hill

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Counter IED
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Waves
  • Acoustics
  • Bandwidth
  • Correlation Analysis
  • Data Analysis
  • East China Sea
  • Frequency Bands
  • Information Science
  • Numerical Analysis
  • Oceans
  • Perturbations
  • Physical Properties
  • Physics Laboratories
  • Seabed
  • Shallow Water
  • Three Dimensional
  • Two Dimensional

Readers

  • Acoustical Oceanography.
  • Computational Modeling and Simulation
  • Explosive Engineering.