文章摘要

文章信息/Info

Title:: Study on Coseismic Response Characteristic of Underground Fluid in and around the Epicenter of Qinghai Menyuan M_S6.4 Earthquake in 2016

Author(s):: WANG Yonggang; SUN Li; Xining Seismic Station,Earthquake Administration of Qinghai Province,Xining 810001,Qinghai,China

摘要:: 通过对门源6.4级地震周边的地下流体同震响应特征进行研究,分析门源地震发生时有响应井孔的水(地)温或静水位变化情况,结果表明:门源6.4级地震震中周边600 km范围内有4个水温、1个静水位的井孔出现了同震响应,水温井孔同震响应变化形态为下降—回升,静水位井孔同震响应的变化形态为突升。同震变化的台站分布、变化形态与震中距、方位的关系不明显。通过同震变化机理的探讨,认为5个观测井的同震变化原因不尽相同。

Abstract:: We study the coseismic response of underground fluid in and around Menyuan M_S6.4 earthquake,and analyze the variation of the water temperature and static water level of observation wells with coseismic response when the Menyuan earthquake occurred. The results show as follow:there appeared coseismic response of water temperature in four observation wells and static water lever in one observation well in the area of 600 km around the epicenter. The coseismic response variation shape of water temperature shows decrease-rise,and that of water level shows jump. The relation between station distribution,the variation shape of coseismic response and epicenter,azimuth is not obvious. Through the study of the mechanism of coseismic response change,we deduce that the reason of the coseismic response variation of the 5 observation wells is not the same.