鲜水河断裂带蠕变观测与地震  

Greep-meter observation data and earthquakes along Xianshuihe faults

作　　者：王兰[1] 

机构地区：[1]四川省地震局测绘工程院,四川雅安625000

出　　处：《四川地震》2004年第1期42-47,共6页Earthquake Research in Sichuan

摘　　要：统计了布设在鲜水河断裂带上的DSJ断层水平位移测量仪建场以来发生的"短周期事件"年频次,用消除年变、一阶差分等计算方法处理DSJ数据并与DSJ同一场地的短基线数据进行对比分析,结果显示:DSJ"短周期事件"有地震前兆意义,具有无震蠕滑性质:蠕变波是可以在同一断层上传播的,并可触发地壳破裂。The observation data of DSJ creep-meters installed along the Xianshuihe faults are analyzed.Among observation data,a lot of changes include sudden changes are related to the earthquakes occurred along the faults of Xianshuihe.We use the linear lit and the first order difference methods to process these data and analyze together with the data of short base line measurement.Our analysis results show that the sudden changes are the results of fault creep movement and are of analysis values.The creep amounts are different along Xianshuihe faults.But some of sudden changes are not related to the earthquakes.

关 键 词：鲜水河断裂 DSJ 短周期事件 

分 类 号：P315.725[天文地球—地震学]