Mid-frequency acoustic propagation in shallow water on the New Jersey shelf. II. Intensity fluctuation

The scintillation index and the intensity cumulative distribution function of mid-frequency (2-10 kHz) sound propagation are presented at ranges of 1-9 km in a shallow water channel. The fluctuations are due to water column sound speed variability. It is found that intensity is only correlated over...

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Bibliographic Details
Published inThe Journal of the Acoustical Society of America Vol. 124; no. 3; p. EL91
Main Authors Tang, Dajun, Henyey, Frank S, Wang, Zhongkang, Williams, Kevin L, Rouseff, Daniel, Dahl, Peter H, Quijano, Jorge, Choi, Jee Woong
Format Journal Article
LanguageEnglish
Published United States 01.09.2008
Subjects
Acoustics
Atlantic Ocean
Geologic Sediments
Models, Theoretical
Motion
New Jersey
Radar
Sound
Sound Spectrography
Time Factors
Atlantic Ocean
New Jersey
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Summary:The scintillation index and the intensity cumulative distribution function of mid-frequency (2-10 kHz) sound propagation are presented at ranges of 1-9 km in a shallow water channel. The fluctuations are due to water column sound speed variability. It is found that intensity is only correlated over a narrow frequency band (50-200 Hz) and the bandwidth is independent of center frequency and range. Furthermore, the intensity probability distribution peaks at zero for all frequencies, and follows an exponential distribution at small values.
ISSN:1520-8524
DOI:10.1121/1.2968295