| 山东省井水位对几次大地震同震响应的比较分析 |
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| 引用本文： | 刘凯,张辉,张军,宋磊,陈燕娥,夏岩,田兆阳,海长洪.山东省井水位对几次大地震同震响应的比较分析[J].地震学报,2019,41(1):69-79. |
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| 作者姓名： | 刘凯 张辉 张军 宋磊 陈燕娥 夏岩 田兆阳 海长洪 |
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| 作者单位： | 中国山东德州 253000 山东省地震局德州地震台;中国山东潍坊 261300 山东省地震局昌邑地震台;中国山东菏泽 274026 菏泽市地震局;中国山东枣庄 277800 枣庄市地震局 |
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| 基金项目： | 山东省地震局合同制项目 |
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| 摘 要： | 采用多井对多震的方式，选取山东省地下流体观测井网中同震响应较好的6口观测井作为研究对象，分别从水位变化形态和幅度对比分析2011年日本MW9.0地震、2012年苏门答腊MW8.6地震和2015年尼泊尔MW7.8地震引起的井水位变化特征，探讨引起该变化的可能机理。研究结果显示:水位同震变化形态以振荡为主；通过定量分析认为聊古一井井水位的阶升是由含水层渗透系数增大所致；位于同一断裂带上的聊古一井和鲁27井井水位在同一地震中所表现的变化形态不同，可能与两个观测井所处的地质构造条件和地震活动背景不同有关；区域应力场的变化会影响栖霞鲁07井的水位同震变化形态；水位同震变化幅度与震级、井震距存在一定关系，同时也取决于含水层水文地质条件的变化量。
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| 关 键 词： | 水位 地震 同震响应 含水层 山东 |
| 收稿时间： | 2018-02-06 |
Comparative analysis on coseismic response of water level in Shandong Province to several major earthquakes |
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| Institution: | 1.Dezhou Seismic Station of Shandong Earthquake Agency，Shandong Dezhou 253000，China2.Changyi Seismic Station of Shandong Earthquake Agency，Shandong Weifang 251300，China3.Earthquake Agency of Heze City，Shandong Heze 274026，China4.Earthquake Agency of Zaozhuang City，Shandong Zaozhuang 277800，China |
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| Abstract: | In the form of multi-well to multi-earthquake, six wells with good coseismic responses in the underground fluid observation network of Shandong Province are selected to analyze the coseismic variations of water level caused by the Japan MW9.0 earthquake, the Sumatra MW8.6 earthquake and the Nepal MW7.8 earthquake. We analyze the characteristics in the aspects of type and amplitude, and discuss the response mechanism. The results show that the major type of coseismic variations is oscillation. With quantitative analysis, we find that the rise of Liaogu-1 water level is due to the increase of permeability coefficient of aquifer. The different types between Liaogu-1 well and Lu-27 well on the same fault zone are due to the different regional geological conditions and seismic activities. The water level coseismic variation type of Lu-07 well is affected by local tectonic stress. The amplitude of water level coseismic variation is related to the magnitude and the distance between well and epicenter, and also depends on the change of hydrogeological condition. |
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