Model-data comparison of shallow water acoustic reverberation in the East China Sea
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Authors
Hill, Robert M.
Subjects
Shallow water reverberation
reverberation pressure
levels
coherence
peak vertical correlations
East China Sea
MMPE
reverberation pressure
levels
coherence
peak vertical correlations
East China Sea
MMPE
Advisors
Smith, Kevin B.
Date of Issue
2003-09
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
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.
Type
Thesis
Description
Series/Report No
Department
Engineering Acoustics
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xiv, 73 p. : ill. (some col.) ;
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.