双差法在江苏及邻域地震事件重新定位中的应用  

Application of double difference algorithm for earthquake relocaltion in Jiangsu area and adjacent region

作　　者：霍祝青[1] 王俊[1] 朱凤梅[1] 秦磊[1] 缪发军[1] 

机构地区：[1]江苏省地震局,中国南京210014

出　　处：《地震地磁观测与研究》2014年第1期75-78,共4页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局星火计划资助课题

摘　　要：通过双差定位法,对江苏及邻域1990—2012年地震事件进行重新定位,其中包括部分人工爆破和塌陷事件。结果显示,重新定位后的爆破和塌陷事件震源深度均有明显改善;地震在空间分布上更加集中,部分地震有向构造带趋近的变化,较多地震呈丛集状出现,震源深度主要集中在5—25km范围内。The earthquakes,includeing artificial blasting and collapse,occurred in Jiangsu area and adjacent region from 1990 to 2012 were relocated with the double difference algorithme.The result showed the all of relocated depth of artificial blasting and collapse events had the dis-tinct improvement.The spatial distribution of earthquake is more centralized,while the earthquakes in a part of areas get close to tectonic belts,many earthquakes occurred in clus-ter.The depth of earthquakes mainly concentrates in 5-25 km scopes.

关 键 词：双差定位法 人工爆破 塌陷 震源深度 

分 类 号：P315[天文地球—地震学]