一、引言 近年来很多的实验指出,正声速梯度浅海中声强的平均衰减规律与海面的不平整度,声波的频率,相对声速梯度的大小,发射深度与接收深度等因素有着密切的联系。本文的目的在于寻找这种联系的数学表式。我们采用文献所发展的平均法来求其平均声强。 I. INTRODUCTION Many experiments in recent years have pointed out that the average attenuation law of sound intensity in shallow sea with positive sound velocity gradient is closely related to the roughness of sea surface, the frequency of sound wave, the size of relative sound velocity gradient, the launch depth and receiving depth. The purpose of this article is to find the mathematical form of this connection. We use the average method developed by the literature to find the average sound intensity.