The implicit finite-difference (IFD) acoustic model in a shallow water environment
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Authors
Kosnik, Mark E.
Subjects
Pressure amplitude
Trapped normal mode propagation
Shallow water acoustics
Ocean modeling
Trapped normal mode propagation
Shallow water acoustics
Ocean modeling
Advisors
Sanders, James V.
Dunlap. Calvin R.
Date of Issue
1984-06
Date
June 1984
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
An implicit finite-difference (IFD ) computer model as developed by Jaeger to solve the parabolic equation. The model preserves continuity of pressure and the normal component of particle velocity at the ocean bottom where there is an interface between media with different sound speeds and densities. This feature was implemented to make the model more accurate in a shallow water environment. The lFD performance in a shallow water environment is analyzed. The IFD results are compared with these of two other models and analyzed in light of basic physical reasoning. In addition, a simple sloping ocean bottom is modeled in an experimental tank so that the measured pressure field can also be compared to IFD model results.
Type
Thesis
Description
Series/Report No
Department
Oceanography
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
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.