黄土高原历史疑难强震震源参数修订的密集地震滑坡解译方法

现今强震触发滑坡的空间分布对了解震源参数有重要意义，那么历史强震触发滑坡能否帮助了解历史强震的震源参数？历史强震滑坡的解译需要注意哪些方面？解译的不完整能否代表历史强震同震滑坡的整体特征？如何应用密集滑坡开展震源参数修订？本项目将在“山西地堑系洪洞8级地震地表破裂带的北延截止位置及其发震构造运动特征研究（41502204）”的基础上，在前期预研究基础上，总结黄土高原历史强震触发滑坡的遥感解译方法；分析随着离逝时间变长，滑坡数据库的演化特征；最终，探索密集地震滑坡分布对疑难历史强震震源参数修订所发挥的作用. 本申请借鉴现今强震滑坡研究方法，并以现今完整强震滑坡和降雨滑坡数据库为参照，利用历史地震滑坡密集区来识别历史强震的极震区和宏观震中，降低基于震害历史文字推测的不确定性.

The spatial distribution of landslides triggered by strong earthquake today plays an important role in understanding the source parameters of it. Can the distribution of the dense landslides triggered by historical strong earthquakes help us to understand the same parameters of historical doubtful earthquakes? What aspects should be paid attention to in interpreting the historical strong earthquake landslide? Can the incomplete interpretation landslides database represent the overall characteristics of co-seismic landslides triggered by them? How to use dense historical strong earthquake landslide to revise the earthquake source parameter? On the basis of the "Study on the northern extension cut-off position of the surface rupture zone of Hongdong 8 earthquake in Shanxi Graben System and its seismic tectonic movement characteristics (grant no. 41502204)", and the preliminary research, This project will summarize remote sensing interpretation methods of earthquake-triggered landslides in Loess Plateau; analysis of the temporal and spatial evolution characteristics of the landslide database with the elapsed time of the earthquakes; finally, exploring the role of dense earthquake landslide distribution in the revision of the source parameters of doubtful historical strong earthquakes. Using the current complete strong earthquake landslide and rainfall landslide database as a reference, the historical earthquake landslide dense area is used to identify the extreme earthquake area and the macro epicenter of the historical strong earthquake, and will help us to reduce the uncertainty just based on the limited literature records.