地震地磁观测与研究2023，Vol.44Issue(5)：132-141,10.DOI:10.3969/j.issn.1003-3246.2023.05.016
2022年5月2日青州ML4.1地震前昌邑青山深井综合观测仪数据异常分析
Analysis of abnormal changes of deep-well comprehensive observation instrument for Qingshan in Changyi,Shandong
韩博 1朱成林 2闫德桥 1郑家军 1杨立涛 1董敏1
作者信息
- 1. 中国山东 261000 山东省地震局潍坊地震监测中心站
- 2. 中国济南 250100 山东地震台
- 折叠
摘要
Abstract
On May 2,2022,an earthquake with a local magnitude(ML)of 4.1 occurred in Qingzhou,Shandong Province.Before the earthquake,on April 25,2022,the deep-well comprehensive observation instrument of Qingshan in Weifang Central Station showed abnormal trend variations in several observation items,including borehole component strain,vertical pendulum,pore pressure,and hydrostatic level.In order to clarify the properties of abnormal variations,Weifang Earthquake Monitoring Center Station has carried out several on-site verifications of the working state of the instrument,as well as the surrounding environment.Comprehensive analysis has been performed by analyzing the historical observation data,observation data of surrounding areas,historical earthquake data,and simulating the effects of pumping disturbance.It is considered that the synchronous trend variation of the Changyi Qingshan deep-well comprehensive observation instrument is more likely to be affected by pumping and drought during irrigation,and this abnormal change is not a precursor anomaly of the earthquake.关键词
异常核实/综合观测仪/前兆异常/灌溉抽水Key words
anomaly verification/comprehensive observation instrument/precursor anomaly/irrigation pumping引用本文复制引用
韩博,朱成林,闫德桥,郑家军,杨立涛,董敏..2022年5月2日青州ML4.1地震前昌邑青山深井综合观测仪数据异常分析[J].地震地磁观测与研究,2023,44(5):132-141,10.
