Complex Seismic Focus Structure and Earthquake-Triggered Landslide Distribution:Analysis of the 2014 Ludian M_w6.1 Earthquake in Yunnan  

作　　者：CHEN Xiaoli LIU Chunguo 

机构地区：[1]Key Lab of Active Tectonics and Volcano,Institute of Geology,China Earthquake Administration,Beijing 100029,China [2]China Earthquake Networks Center,Beijing 100045,China

出　　处：《Acta Geologica Sinica(English Edition)》2017年第2期733-734,共2页地质学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(grant No.41572194);the Institute of Geology,China Earthquake Administration(grant No.IGCEA1604);the National Key Basic Research Program of China(grant No.2013CB733205)

摘　　要：Objective The 2014 Ludian Mw6.1 earthquake in Yunnan occurred in a mountainous area with complex tectonics and topography, which caused serious damage as well as co-seismic landslides of an unusual large scale. Because the suspected seismogenic faults on the surface, distribution of aftershocks and focal mechanism solutions are not consistent, it remains difficult to determine what is the real causal fault or seismogenic structure for this event. Actually, it may imply the complicity of the seismic source at depth. In addition, the distribution of the co- seismic landslides also exhibits some diffusion that is different from general eases, likely associated with the seismic focus structure.Objective The 2014 Ludian Mw6.1 earthquake in Yunnan occurred in a mountainous area with complex tectonics and topography, which caused serious damage as well as co-seismic landslides of an unusual large scale. Because the suspected seismogenic faults on the surface, distribution of aftershocks and focal mechanism solutions are not consistent, it remains difficult to determine what is the real causal fault or seismogenic structure for this event. Actually, it may imply the complicity of the seismic source at depth. In addition, the distribution of the co- seismic landslides also exhibits some diffusion that is different from general eases, likely associated with the seismic focus structure.

关 键 词：Complex Seismic Focus Structure and Earthquake-Triggered Landslide Distribution:Analysis of the 2014 Ludian M_w6.1 Earthquake in Yunnan 

分 类 号：P315[天文地球—地震学]