摘要
对2016年1月21日门源6.4级地震前出现的测震学异常进行跟踪分析,发现震前主要以中长期异常为主,其中青海地区6级以上地震超长平静异常显著,祁连地震带3级以上地震频次和b值时间扫描存在异常,地震平静特征参数Wq值虽然在空间上有一定的指示意义,但在该震前无显著的短临异常。综上,在震情判定过程中采用阶段性渐进式地震预报思路也是有效的。
Through tracking on the seismometry anomaly of Menyuan M_S6.4 earthquake on Jan.21,2016,we find that the seismometry items mainly showthe middle and long term anomaly before the earthquake,such as the over-long quiet period of M≥6.0 earthquakes in Qinghai area is significant,the occurrence frequency of M≥3.0earthquakes in Qilian seismic belt and the spatial scanning of b value showanomaly before the Menyuan M_S6.4earthquake.Although the seismic quiet characteristic parameter Wq value has a certain meaning in space,it didn't showthe short- impending anomaly.In summary,using progressive ideas to predict the earthquake in the process of earthquake judgment is effective.
出处
《地震研究》
CSCD
北大核心
2016年第S1期14-19,133,共7页
Journal of Seismological Research
基金
青海省地震科学基金项目(2016A01)资助
关键词
门源6.4级地震
测震学异常
震情判定
Menyuan MS6.4 earthquake
seismometry anomalies
earthquake judgment
