摘要
对2019年3月28日青海茫崖Ms5.0地震前出现的测震学异常进行跟踪分析,发现震前主要以中短期异常为主,其中青海西北地区M_(L)≥4地震超长平静异常显著,以及茫崖3级震群和显著地震。根据青海西北地区中强地震活动特征,认为其内部中强地震危险性在进一步增强,后续发生5级以上地震的可能性很大,随即发生了本次茫崖Ms5.0地震。综上,这些测震学异常对青海西北地区中强地震的预测预报具有重要的指示意义。
Tracking and analyzing the seismological anomalies before the Ms5.0 earthquake in Mangya,Qinghai on March 28,2019.It is found that the anomalies before the earthquake are mainly short-term and medium-term anomalies,among which the ultra long calm anomaly of M_(L)≥4 earthquake in Northwest Qinghai is significant,and there are also Mangya M 3 earthquake swarms events and significant earthquake events.According to the characteristics of moderately strong earthquakes in Northwest Qinghai,it is considered that the internal seismic risk is further enhanced,and there is a great possibility of subsequent moderately strong earthquakes,and then the Mangya Ms5.0 earthquake occurred.In conclusion,these seismological anomalies have important indicative significance for the prediction of moderately strong earthquakes in Northwest Qinghai.
作者
胡维云
袁伏全
孙玺皓
张朋涛
李启雷
王培玲
HU Weiyun;YUAN Fuquan;SUN Xihao;ZHANG Pengtao;LI Qilei;WANG Peiling(Qinghai Earthquake Agency,Xining S10000,China)
出处
《高原地震》
2021年第4期13-17,共5页
Plateau Earthquake Research
基金
青海省重大科技专项(项目编号:2019-ZJ-A10)
2021年度震情跟踪定向工作任务(项目编号:2021010412)联合资助。
关键词
茫崖Ms5.0级地震
青海西北地区
测震学异常
预测预报
Mangya Ms5.0 earthquake
Northwest area of Qinghai
Seismographic anomaly
Prediction and Forecast
