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ACOUSTICAL PHYSICS
卷 53, 期 2, 页码 167-171出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063771007020091
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Frequency spectra of underwater ambient noise were measured in the lagoon of a coral atoll, outside the reef, and on shallow-water banks in the tropical zone of the Indian Ocean. The measurements were performed in the frequency range from 0.003 to 9 kHz with the use of self-contained acoustic buoys and a small boat. In all of the regions studied, continuous underwater noise of biological origin was observed with spectral maxima at frequencies of 1-1.5 and 7-8 kHz. In the lagoon of an atoll, this noise was much more intense than regular dynamic noise in the ocean. The maximum noise levels were observed in the first half of night.
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