Characteristics of snapping shrimp noise in the northeastern East China Sea

Snapping shrimp sounds are a dominant source of high-frequency ambient noise (e.g., > 1 kHz) in temperate and tropical coastal waters of depths less than 60 m. Surprisingly, a recent shallow water experiment conducted in the northeastern East China Sea (SAVEX15) revealed an abundance of snapping...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2017-05, Vol.141 (5), p.3525-3526
Main Authors: Yuan, Zhuqing, Cho, Chomgun, Song, Hee-Chun, Hodgkiss, William S.
Format: Article
Language:English
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Summary:Snapping shrimp sounds are a dominant source of high-frequency ambient noise (e.g., > 1 kHz) in temperate and tropical coastal waters of depths less than 60 m. Surprisingly, a recent shallow water experiment conducted in the northeastern East China Sea (SAVEX15) revealed an abundance of snapping shrimp sounds in approximately 100-m deep shallow water from two 16-element vertical line arrays (VLAs) deployed over 10 days. Our preliminary analysis indicates the pressure amplitude statistics fits a SαS (symmetric alpha-stable) distribution due to a heavy tail over the commonly assumed Gaussian distribution, while the temporal statistics of shrimp snaps detected above some threshold appears to fit a non-homogeneous Poisson process. In addition, the VLAs allow for localization of individual snapping shrimp. In this paper, the temporal and spatial variability of the noise characteristics dominated by snapping shrimp sounds are investigated in the northeastern East China Sea.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4987433