2023年2月6日土耳其两次7.8级地震引起的井水位同震响应对比分析  

Comparison and Analysis of Coseismic Response of Well Water Level Caused by Two M7.8 Earthquakes in Tirkiye on February 6,2023

作　　者：梁卉[1] 高小其 颜龙[1] LIANG Hui;GAO Xiao-qi;YAN Long(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 83oo1l,China;Key Laboratory of Crustal Dynamics,National Institute of Natural Hazards,Ministry of Emergency Management of China,Beijing 100085,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011 [2]应急管理部国家自然灾害防治研究院,地壳动力学重点实验室,北京100085

出　　处：《地震》2024年第3期96-107,共12页Earthquake

基　　金：新疆地震科学基金项目(202301);新疆维吾尔自治区自然科学基金项目(2022D01A106);地震科技星火计划青年项目(XH23046YA)。

摘　　要：2023年2月6日,土耳其发生的两次7.8级地震引起了新疆乌鲁木齐地区新04井、新10井和新11井的同震响应,但同震变化形态各有不同。本文对比分析了这三口观测井水位的同震响应特征,探讨了地震引起的井水位同震响应机理。结果显示,本研究中的三口观测井水位的同震响应类型有振荡、同震下降和同震上升三种。其中,新10井表现为振荡,而新04井和新11井则分别表现为同震下降和上升,表明井水位同震变化机理的复杂性。两次地震在同一观测井的同震响应形态一致,不同观测井水位同震变化与井孔所在位置的渗透性结构改变有关。The two M7.8 earthquakes in Turkiye on February 6,2023,caused coseismic responses in Xin O4 well,Xin 10 well,and Xin 1l 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 1o well,coseismic decrease at Xin O4 well,and coseismic increase at Xin 1l 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.

关 键 词：井水位 同震响应机理 潮汐因子 相位滞后 2023年土耳其7.8级地震 

分 类 号：P315.7[天文地球—地震学]