Effect of internal solitary waves on underwater acoustic propagation
Loading...
Authors
Chu, Peter C.
Hsieh, Chung-Ping
Subjects
Acoustic detection, CASS/GRAB, Coastal monitoring buoy, Internal
solitary wave, Ray path
Advisors
Date of Issue
2010
Date
2010
Publisher
Language
Abstract
Internal solitary waves (ISWs) were observed on 07:52–09:36 GMT July 30,
2005, in the Philippine Sea near Taiwan from high-resolution temperature sampling.
The effect of ISWs on acoustic propagation was identified using the Navy’s
Comprehensive Acoustic Simulation System through comparison between rangeindependent
and range-dependent sound speed profiles. The ISWs enhance the
sound propagation slightly (0–3 dB) in near-range, weaken or enhance the sound
propagation (−20 to 20 dB) evidently in midrange, and always weaken the sound
propagation (up to −20 dB) in far range. The ISW’s effect on the acoustic propagation
varies with sound frequency and sound source depth. This work provides a methodology
to anticipate possible errors in transmission loss estimation in an operational
framework, if no further additional data are available.
Type
Article
Description
Marine Technology Society Journal, 44 (5), 10-16
Series/Report No
Department
Oceanography
Organization
Identifiers
NPS Report Number
Sponsors
Funding
Format
Citation
Chu, P.C., and C.-P. Hsieh, 2010: Effect of internal solitary waves on underwater acoustic propagation. Marine Technology Society Journal, 44 (5), 10-16 (paper download).
Distribution Statement
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.