摘要
利用云南数字地震台网和腾冲火山台网记录的2011年1 ～12月震相数据,采用Hypo2000、HypoDD定位方法对2011年盈江Ms5.8地震序列的前震、余震进行了重新定位.定位结果显示地震分布较定位前更为集中.前震活动主要沿大盈江断裂呈NE走向分布.余震呈共轭分布：一支沿大盈江断裂呈NE向分布,另一支沿垂直于大盈江断裂的隐伏错断呈SSE向分布.余震分布存在着稀疏段落,可能对应着前震主要破裂区域.
On the basis of earthquake phases recorded by the Yunnan Digital Seismic Network and the Tengchong volcano broadband seismic instruments in January ～ December,2011 and the location results by Hypo2000 absolute location methods as the initial value,we obtained the locations of the foreshocks and aftershocks of MsS.8 Yingjiang sequence with double-difference location method.Our results show that the relocated aftershocks have a conjugate characteristic：earthquakes dominantly occurred along the Dayingjiang fault in.ENE direction and another extended toward the SSE along a blind fault which was vertical to the Dayingjiang fault.The seismicity gap of aftershocks happens to be the foreshocks intensive areas.
出处
《中国地震》
北大核心
2013年第4期438-447,共10页
Earthquake Research in China
基金
国家"十二五"科技支撑计划(2012BAK19B01-07)资助
关键词
地震定位
盈江地震序列
共轭地震
Earthquake location
Yingjiang earthquake sequences
Conjugate earthquake
