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根据实地考查研究，１８３３年嵩明８级大地震的地表破裂带，全长约１３０公里；破裂带贯通了小江西支断裂的６条次级断裂及５个断裂阶部；地震的地表破裂中心在南冲、陆良山一带。
According to field research, the surface rupture zone of Songming M 8 earthquake in 1833 is about 130 km in length. The rupture zone runs through 6 secondary faults and 5 fault steps of the Xiaoxi Xizi fault. The surface rupture center In the South red, Luliangshan area.