舟山海域海洋生物的噪声

MARINE ANIMAL NOISE OBSRVED IN ZHOUSHAN ISLANDS WATERS

本文报道了舟山海域观测的海洋生物噪声。描述实验方法和生物噪声的特征及其海区的差别。讨论了我国东南沿岸海域存在的生物噪声及其噪声源,和在渔业上应用的可能性。

This paper presents a suwmary of observations of noise of apparent biological origin from a mumber of locations in Zhoushan Islands waters.The most energy frequencies were between 220 and 900 Hz,and spectral peaks mainly at 250,315,400 500,and 630—800Hz.During ohoruses which were at the dusk,dawn,and midday,noise spectrum levels rose up to 37—44 dB above the usual background noise.Marine animal noise and sources in southeast coast of China,and their applications to fisheries are discussed.