【摘要】 综合 2 0世纪 90年代初在霍山山前断裂和近年在绵山西侧断裂和太谷断裂获取的最新调查资料 ,讨论了 130 3年山西洪洞 8级地震地表破裂带的展布和位移特征 .如果太谷断裂、绵山西侧断裂与霍山山前断裂在 130 3年洪洞地震中同时活动 ,则该次地震的地表破裂带长16 3km ,分为 3段 ,即霍山山前断裂段、绵山西侧断裂段和太谷断裂段 .各段长度分别为 5 0 ,35和 70km ,3段之间存在 4和 8km的阶区 .该地震地表破裂带具右旋走滑特征 ,北段和中段右旋走滑位移量 6～ 7m ,南段最大为 10m .在山西断陷带盆地边界的单条断裂一般只对应 7级地震 ,而该次 8级特大地震则突破两个盆地之间的障碍体 ,显示了强震地表破裂尺度的可变特征更多还原

【Abstract】 Based on the latest displacement of Huoshan piedmont fault,Mianshan west-side fault and Taigu fault obtained from the beginning of 1990′s up to the present,the characteristics of distribution and displacement of surface rupture zone of the 1303 Hongtong M =8 earthquake,Shanxi Province are synthesized and discussed in the paper. If Taigu fault,Mianshan west-side fault and Huoshan piedmont fault were contemporarily active during the 1303 Hongtong M =8 earthquake,the surface rupture zone would be 160 km long and could be divided into 3 segments,that is,the 50-km-long Huoshan piedmont fault segment,35-km-long Mianshan west-side fault segment and 70-km-long Taigu fault segment,respectively. Among them,there exist 4 km and 8 km step regions. The surface rupture zone exhibits right-lateral features. The displacements of northern and central segments are respectively 6～7 m and the southern segment has the maximum displacement of 10 m. The single basin-boundary fault of Shanxi fault-depression system usually corresponds to M ≈7 earthquake,while this great earthquake ( M =8) broke through the obstacle between two basins. It shows that the surface rupture scale of great earthquake is changeable.更多还原