地震波在盆地中的传播特点及其对盆地中震害的影响

通过数值模拟表明，对于具有一定尺度并填充了低速沉积物的盆地，地震发生时入射的体波会激发出在盆地内往返传播的短周期面波，从而造成盆地内大振幅长持续时间的振动，这大大增加了地震对盆地中结构物的破坏作用。针对盆地是当地经济、文化发展的中心，又常常面临一定的地震危险性的问题，提出了进一步开展盆地结构对地震响应的研究工作的几点建议。

Propagation Characters of Seismic Wave in Basin and Its Impact on Earthquake Disaster

The numerical simulation suggested that the incident body wave can trigger the short-period surface wave of alternating propagation in basin which is certain scale and filled by the low velocity deposit,it caused the long duration shock with large amplitude in the basin,and increased the destructiveness on the structu res in the basin.The basins are the centre of local economics and culture,and faced with the seismic risk,proposed the suggestions of the study on the basin structure impact on earthquake response.