埋藏基岩断裂对地震波动影响的超声模拟研究

ULTRASONIC MODELLING RESEARCH INTO THE EFFECT OF UNDERLYING BEDROCK FAULTS ON SEISMIC WAVE

地球表层的地质构造对地震波动有不容忽视的影响，研究其规律，对于探查地壳结构乃至了解地球表层动力学特征具有重要意义。应用超声模拟方法，从基岩断裂对波传播和波场分布的影响以及基岩断裂倾向对地表地震动频率的影响三个方面研究了埋藏基岩断裂对地震波动的影响，揭示了一系列现象和规律。

The effect of geological structure in the surface layer of the earth on seismic wave can not be neglected, so studging its laws is significant for exploring the structure of the crust and for understanding fynamic features of the earth's surface layer and so in paper, the effect of underlying bedrock faults on seismic wave has been studied by the method of ultrasonic modelling in three aspects--the effect of a bedrock fault on wave propagation, the effect of bedrock faults on energy distribution in wave field as well as the effect of the inclination of a bedrock fault on frequency components of earthquake ground motion, and a series of phenomena and laws are revealed.