海底的声学性质是浅海声传播中一个重要的影响因素,有关这方面的研究在国外受到愈来愈多的注意。最近Wood和Weston在Emsworth港区通过海底介质中的声传播实验,测量了底质的声速及吸收系数。为此制造了特殊的换能器,它具有以下特点:(1)体积小,易于插入泥中;(2)低阻抗,能与30码电缆接用;(3)频带宽,4—70千赫。测量结果如下: The acoustic properties of the seabed is an important factor in the propagation of shallow sea sound. Studies in this area have drawn more and more attention abroad. Recently, Wood and Weston measured the sound velocity and absorption coefficient of sediment through acoustic propagation experiments in seafloor media at Emsworth Harbor. For this reason to create a special transducer, which has the following characteristics: (1) small size, easy to insert into the mud; (2) low impedance, with 30 yards cable access; (3) Hehe The measurement results are as follows: