海底地声参数对浅海低频声传播的影响  

Effects of sediment on the low frequency acoustic wave propagation in shallow water

作　　者：颜冰[1] 龚沈光[1] 周伟[1] 

机构地区：[1]海军工程大学兵器工程系,武汉430033

出　　处：《船海工程》2007年第2期61-64,共4页Ship & Ocean Engineering

摘　　要：用分层介质中点声源激发声场的积分表示法得到海水中声源外任意一点的声场表达式,用波数积分的数值计算方法得到声场传播在距离上的传播损失,针对不同的海底沉积物参数进行了声场的仿真计算和分析,得出浅海低频声传播的基本规律和特点。A model of sediment＇s acoustic parameters which have badly influence on the propagation of acoustic wave in shallow water was presented. Applying the theory of acoustic wave propagation and wave-number integration method of acoustic field in simulation of the transmission loss of the low frequency acoustic wave propagation in shallow water, the paper analyzed the influence of sediment upon the acoustic wave propagation, and summarized the basic regulation and features of the low frequency acoustic wave propagation in shallow water.

关 键 词：沉积物 传播损失 切变波 波数积分 

分 类 号：P733.21[天文地球—物理海洋学]