摘要
本文对液态、高声速海底介质，根据各号简正波衰减系数的水层分量变化不大的特性，提出了一种可消除水层吸收、有效计算浅海海底衰减系数的方法。该方法将用于反演海底衰减系数计算的频率范围，从低频段（f≤200Hz）提高到中低频段（f≤2kHz）。
Abstract: On this paper, a method of effectively calculating the acoustic attenuation coefficient for a fluid sea-bottom with high sound speed is presented. The method is formulated on the base that the fractional part of the attenuation coefficient contributed by the water-column varys slowly with different normal modes. One of the advantages of the method is that it can remove the effects of the water-column absorption. Furthermore, the method can be used to inverse the sea-bottom acoustic attenuation coefficient in a wider frequency range of f≤2 kHz than the conventional methods (f≤200Hz).
出处
《声学学报》
EI
CSCD
北大核心
1997年第5期455-462,共8页
Acta Acustica
