Prediction of Strong Ground Motion for Earthquake Hazard Mitigation

这一行动是为了继续支持欧洲经委会-8408227。其目的是根据预计在邻近断层上发生的地震来预测特定建筑工地的地面运动。预测的依据是断裂带中发生的物理过程的知识、断层上地震的历史记录、地震波传播通过的岩石圈的性质，以及特定地点的地面对输入地震波的响应。重点将集中在：(1)根据断层上的地球物理和地质观测建立估计特征地震震源参数的统一理论；(2)进一步研究长期地震活动与地壳品质因子的关系；(3)研究土壤放大的一维模型的适用范围；(4)研究非线性对强地面运动的影响。他在这方面的研究在国际上是公认的。他有能力和机构设施来完成拟议的研究，预计将提供岩土工程师迫切需要的信息，以减轻地震灾害。

This action is for continued support of ECE-8408227. The aim is to predict the ground motion at a particular construction site in terms of the earthquakes expected to occur on neighboring faults. The prediction is based upon a knowledge of physical processes occurring in the fault zone, the historical record of earthquakes on the fault, the properties of the lithosphere through which the seismic waves propagate, and the response of the ground at the particular site to the incoming seismic waves. The focus will be on: (1) development of a unified theory for estimating source parameters of a characteristic earthquake from geophysical and geological observations on a fault, (2) further study on the relation between long-term seismicity and the quality factor of the Earth's crust, (3) study of the limit of applicability of the 1-D model for soil amplification and (4) study of the effect of non-linearity on strong ground motion. The PI is internationally recognized for his research in this area. He has the ability and institutional facilities available to complete the research proposed which is expected to yield information which is urgently needed by geotechnical engineers for earthquake hazard mitigation.