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

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作者：
Tang, Dajun [1 ]
Henyey, Frank S. [1 ]
Wang, Zhongkang [1 ,3 ]
Williams, Kevin L. [1 ]
Rouseff, Daniel [1 ]
Dahl, Peter H. [1 ]
Quijano, Jorge [1 ,4 ]
Choi, Jee Woong [1 ,2 ]
机构：
[1] Applied Physics Laboratory, University of Washington, 1013 NE 40th Street, Seattle, WA 98105-6698, United States
[2] Department of Environmental Marine Sciences, Hanyang University, Korea, Republic of
[3] Hangzhou Applied Acoustics Research Institute, 96 Huaxing Road, Hangzhou, China
[4] Portland State University, 1900 SW Fourth Avenue, Portland, OR 97207, United States
来源：
Journal of the Acoustical Society of America | 2008年 / 124卷 / 03期
关键词：
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. © 2008 Acoustical Society of America;
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