2021年青海玛多7.4级地震的江苏流体井水位同震响应特征

(1.江苏省地震局,江苏 南京 210014; 2.防灾科技学院,河北 三河 065201)

青海玛多7.4级地震; 江苏流体井网; 同震响应; 地震预测

The Coseismic Step-rising of the Groundwater Level in Jiangsu Caused by the Maduo MS7.4 Earthquake in 2021
MIAO Ali1,2,ZHU Tao1,ZHANG Yi1,YE Biwen1,WANG Kai1

(1.Jiangsu Earthquake Agency,Nanjing 210014,Jiangsu,China)(2.Institute of Disaster Prevention,Sanhe 065201,Hebei,China)

the Maduo,Qinghai MS7.4 Earthquake; the observational network of wells in Jiangsu; coseismic response; earthquake prediction

DOI: 10.20015/j.cnki.ISSN1000-0666.2023.0006

备注

分析了2021年青海玛多7.4级地震引起的江苏流体井网水位的同震响应特征以及水位同震上升区与4.0级以上地震活动的关系。结果表明:青海玛多7.4级地震后,江苏流体井网水位出现了较大范围的同震响应,水位同震变化形态主要表现为振荡、阶升和阶降。2008年以来,4次7.0级以上大地震引起的江苏流体井网水位同震响应特征与地震活动的关系表明:水位同震响应上升区可能是区域应力集中的一种体现,它对中长期尺度中强地震的发生地点具有一定的指示意义。
This paper firstly analyzed the characteristics of the coseismic response of the water level in the observational network of wells in Jiangsu caused by the 2021 Maduo MS7.4 Earthquake,then analyzed the activity of the MS≥4.0 earthquakes in the area which the water level had the coseismic step-rising.In a wide range area in Jiangsu,the water level had a coseismic response during the Maduo 7.4 Earthquake; the coseismic variation of the water level was featured as oscillating,step-rising and step-falling.The coseismic step-rising of the water level may indicate the regional stress concentration,which suggested the possible location of the medium- and strong-earthquakes in the medium- and long-period.
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