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Published on: June 13, 2020
Long-term ambient noise statistics in the northeast South China Sea
Yang Shi1, Yixin Yang2, Jiwei Tian1
1College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, 266100, China.
Abstract:
This paper reports on the long-term statistics of ambient noise (50-2000 Hz) in the northeast South China Sea. The data were collected from July 2016 to March 2018. The long-term statistics, seasonal, and diel variations of ambient noise are analyzed. There are significant seasonal variations from 500 to 2000 Hz. The ambient noise level at 1000 Hz is 6-10 dB higher in winter than in summer. There is only a small difference between the day and night comparison (less than 1.6 dB). The results are significant to evaluate and improve the performance of underwater acoustic systems in this area.
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