Publication:
The influence of shallow water variability on short range water-bourne propagation

Loading...
Thumbnail Image
Authors
Karpi, Stephen C.
Subjects
Shallow water variability
Range independent
Range dependence
Internal wave perturbations
Vertical coherence
Advisors
Smith, Kevin B.
Dahl, Peter H.
Date of Issue
2002-12
Date
December 2002
Publisher
Monterey, California. Naval Postgraduate School
Language
Abstract
Interest in enhancing the forecasting capabilities of both active and passive sonar systems employed in littoral regions has greatly escalated over the past 10 years. This requires a need for improvements in the general understanding of the influence of shallow water variability on acoustic propagation. This work examines the influence on the relatively short-range water-bourne propagation paths of shallow water variability. Both internal wave fluctuations and random sound speed perturbations will be considered The effects of littoral variability on acoustic propagation will be quantified in terms of spatial (vertical) coherence functions. Since the effects of the water-column variability is of interest, the direct water-bourne propagation path will be solely analyzed. The data to be examined will be generated numerically based on an acoustic propagation model employing environmental data taken from the East China Sea as part of the ONR-sponsored ASIAEX experiments.
Type
Thesis
Description
Series/Report No
Department
Engineering Acoustics Academic Committee
Organization
Identifiers
NPS Report Number
Sponsors
Funder
Format
xiv, 55 p. : col. ill.
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.
Collections