Mid-frequency acoustic propagation in shallow water on the New Jersey shelf: Mean intensity

Mid-frequency ( 1 - 10 kHz ) sound propagation was measured at ranges 1 - 9 km in shallow water in order to investigate intensity statistics. Warm water near the bottom results in a sound speed minimum. Environmental measurements include sediment sound speed and water sound speed and density from a...

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Published in:The Journal of the Acoustical Society of America 2008-09, Vol.124 (3), p.EL85-EL90
Main Authors: Tang, Dajun, Henyey, Frank S., Wang, Zhongkang, Williams, Kevin L., Rouseff, Daniel, Dahl, Peter H., Quijano, Jorge, Choi, Jee Woong
Format: Article
Language:English
Subjects:
Acoustics
Atlantic Ocean
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Geologic Sediments
Models, Theoretical
Motion
New Jersey
Physics
Radar
Sound
Sound Spectrography
Temperature
Time Factors
Underwater sound
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container_title The Journal of the Acoustical Society of America
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creator Tang, Dajun
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description Mid-frequency ( 1 - 10 kHz ) sound propagation was measured at ranges 1 - 9 km in shallow water in order to investigate intensity statistics. Warm water near the bottom results in a sound speed minimum. Environmental measurements include sediment sound speed and water sound speed and density from a towed conductivity-temperature-depth chain. Ambient internal waves contribute to acoustic fluctuations. A simple model involving modes with random phases predicts the mean transmission loss to within a few dB. Quantitative ray theory fails due to near axial focusing. Fluctuations of the intensity field are dominated by water column variability.
doi_str_mv 10.1121/1.2963043
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subjects Acoustics
Atlantic Ocean
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Geologic Sediments
Models, Theoretical
Motion
New Jersey
Physics
Radar
Sound
Sound Spectrography
Temperature
Time Factors
Underwater sound
title Mid-frequency acoustic propagation in shallow water on the New Jersey shelf: Mean intensity
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