AIT (U.S.) - CCNAA (Taiwan) Cooperative Research (Engineering): Modeling of Strong-Ground Motion Observed BySMART1 Array

这是一个由美国南加州大学的Marijan Dravinski博士和Keiiti Aki博士，以及中央研究院的文国良博士和叶永丹博士，在AIT(美国)和CCNAA(台湾)合作科学计划的支持下进行的一个为期三年的合作研究项目。这项提案计划开发一个模型来预测地震期间的强地面运动，并利用从台湾兰阳沉积盆地收集的3000条地震记录来校准这个模型。沉积盆地中强地震动的局部放大是认识地震危险性的重要问题之一。最著名的例子是1985年墨西哥城地震时地面运动的放大，该市距离震源300多公里，遭受了广泛的破坏。这一研究具有十分重要的意义，可以对地震过程中地震动放大和变化的本质提供新的见解。使用SMART1(台湾强震阵列，第一阶段)数据校准的模型可以应用于洛杉矶盆地，以减少地面运动估计的不确定性。一场大地震对洛杉矶盆地造成的破坏潜力是巨大的。这项工程可能会带来潜在的减少生命和财产损失。

This is a three-year collaborative research project between Drs. Marijan Dravinski and Keiiti Aki, University of Southern California, and Drs. Wen Kuo-Liang and Yeh Yeong-Tein, Academia Sinica, supported by the AIT (U.S.) - CCNAA (Taiwan) Cooperative Science Program. This proposal plans to develop a model to predict strong ground motion during earthquakes and to calibrate this model using the 3000 earthquake records collected from the Lanyang sedimentary basin in Taiwan. Local amplification of strong ground motion in a basin of sedimentary deposits is one of the most important issues in understanding earthquake hazards. The most notable case is the amplification of ground motion in the 1985 earthquake in Mexico City, which was more than 300 km from the source of the earthquake and suffered extensive damage. This research is very significant and can provide new insights into the nature of ground motion amplification and variation during earthquakes. The model calibrated using the SMART1 (Strong Motion Array in Taiwan, Phase 1) data can be applied to the Los Angeles Basin to reduce uncertainties in ground motion estimation. The damage potential for the Los Angeles Basin from a major earthquake is enormous. This project can bring a potential reduction in the loss of life and property.