2017年精河6.6级地震异常变化数据跟踪分析

Analysis of Jinghe earthquake with M_S 6.6 based on observation data tracking analysis

利用数据跟踪分析信息库,提取2017年8月9日精河6.6级地震前3个月,距震中500 km范围内的观测数据跟踪分析记录,对与地震相关的不明原因事件进行分析讨论。结果表明:精河地震发生前,温泉地震台水平摆、精河地震台水平摆、博乐32井水位出现不明原因的疑似前兆异常变化,地震结束后逐渐恢复正常。巴仑台地震台分量应变在此次地震前也出现不明原因变化,但地震结束后异常持续变化,需后续重点跟踪分析。

Basing on the information database of observation data tracking analysis, taking the precursor observation event records around the epicenter 500 km within three months before Jinghe MS 6.6 earthquake on August 9, 2017, we analyzed and discussed the unidentifed events which related to this earthquake. The results showed there were obvious suspected abnormalies before Jinghe earthquake, such as, horizontal pendulum tiltmeter in Wenquan and Jinghe, static water level in Bole No.32 well. They are also tern to normal after Jinghe earthquake. There was obvious suspected abnormaly in component strain at Baluntai Seismic Station too, and it continued after the earthquake. So the follow-up study was needed.