Comparison and Analysis of Coseismic Response of Well Water Level Caused by Two M7.8 Earthquakes in Türkiye on February 6,2023
The two M7.8 earthquakes in Türkiye on February 6,2023,caused coseismic responses in Xin 04 well,Xin 10 well,and Xin 11 well in Urumqi,Xinjiang,but their co-seismic variation patterns were different.In this paper,we compare and analyze the co-seismic response characteristics of water levels in the three observation wells,and discuss the earthquake-induced changes in well water levels and their coseismic response mecha-nisms.The results illustrate three types of coseismic responses:oscillation at Xin 10 well,coseismic decrease at Xin 04 well,and coseismic increase at Xin 11 well,which indicates the complexity of the mechanisms of coseismic changes in well water levels.Two M7 earthquakes caused the same type of coseismic response at the same well,and the coseis-mic changes of water levels of different observation wells are related to changes in the per-meability structure where the well boreholes are located.
Well water levelCoseismic response mechanismTidal factorPhase lagThe 2023 Türkiye M7.8 earthquake
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