安庆M_S4.8地震前肥东定点短水准异常提取  

Extracting Short-leveling Anomalies of the Fixed-point in Fei-Dong Station before Anqing M_S4.8 Earthquake

作　　者：洪德全[1,2] 王雪莹[1] 王行舟[1,2] 张军[1] 李军辉[1] 

机构地区：[1]安徽省地震局,安徽合肥230031 [2]安徽蒙城地球物理国家野外科学观测研究站,安徽蒙城233527

出　　处：《地震研究》2012年第1期6-11,157,共6页Journal of Seismological Research

基　　金：中国地震局震情跟踪合同制定向工作任务资助

摘　　要：通过倾斜矢量法和垂直形变剖面图分析法,对安庆MS4.8地震前肥东短水准数据进行了分析,结果显示肥东台短水准数据在安庆地震前出现异常变化。对比分析了安庆地震与九江地震前肥东短水准异常形态的差异,认为安庆地震和九江地震的震源机制不同,震前应力积累在肥东台附近的不同类型可能是两次地震前肥东短水准异常形态不同的主要原因。Using tilt vector method and vertical deformation profile method respectively,we analyzed the data of short leveling in Feidong Station.The result showed that the data of short leveling in Feidong station appear anomaly before Anqing MS4.8 earthquake.Comparing and analyzing the difference of short leveling data anomaly in Feidong between Anqing earthquake and Jiujiang earthquake,we inferred that the difference of focal mechanism of the two earthquake and the different stress accumulation process before the two earthquakes was the main reason.

关 键 词：安庆地震 短水准 肥东台 倾斜矢量法 垂直形变 

分 类 号：P315.723[天文地球—地震学]