摘要
本文根据射线参数法测量了浅海(水深约40米)沉积层中的声速与层厚。实验中采用爆炸声源,两个水听器,其中一个固定于声源附近,用以计算爆炸开始时间,另一个用于在不同水平距离接收海底及沉积层下界面的反射信号。用磁带记录仪和示波器配以照相记录仪两种方式记录。所得沉积层中声速值与根据底质取样所得声速值基本一致。
The sound speed and layer thickness of the sediment in shallow sea whose depth is approximately 40m are measured by the ray parameter In the experiment an explosive source is used with two receiving hydrophones, of which one is fixed in the vicinity of the source and is used for the computation of the starting time of the explosion, whereas the other is used to receive the reflected signals from the bottom and subbottom at various distances. The signals from both hydrophones are recorded simultaneously with a tape recorder and an oscilloscope-camera system. The measured values of the sound sPPeed are generally in good agreement with those obtained by the analysis of the sediment samples.
