| CO2气体在地震孕育与发生过程中的作用及其机理研究 |
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| 引用本文： | 李晨桦,张慧,苏鹤军,周慧玲,徐钦.CO2气体在地震孕育与发生过程中的作用及其机理研究[J].西北地震学报,2019,41(3):750-756. |
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| 作者姓名： | 李晨桦 张慧 苏鹤军 周慧玲 徐钦 |
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| 作者单位： | 中国地震局兰州地震研究所, 甘肃 兰州 730000;甘肃省地震局, 甘肃 兰州 730000;中国科学院地球化学研究所, 贵州 贵阳 550002,中国地震局兰州地震研究所, 甘肃 兰州 730000;甘肃省地震局, 甘肃 兰州 730000,中国地震局兰州地震研究所, 甘肃 兰州 730000;甘肃省地震局, 甘肃 兰州 730000,中国地震局兰州地震研究所, 甘肃 兰州 730000;甘肃省地震局, 甘肃 兰州 730000,甘肃省地震局, 甘肃 兰州 730000 |
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| 基金项目： | 中国地震局地震应急青年重点任务（CEA_EDEM-2016）；中国地震局地震预测研究所基本科研业务项目（2018IESLZ05） |
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| 摘 要： | 通过甘东南地震危险区地震宏观异常观测实例分析,系统研究CO_2气体在地震构造活动过程中的地球化学演化过程,以及发生的一系列酸碱平衡和氧化还原化学反应。结果表明地下深部CO_2气体不仅是其他微量气体Rn等向地表方向运移的载体,而且参与酸碱平衡和氧化还原反应,是地下深部生物化学反应的重要影响条件,地震前兆及宏观异常现象的发生常伴随着CO_2的异常变化。因此CO_2气体可以作为良好的示踪气体,在地震前兆观测及重大异常落实中尤其要重视对其进行监测。
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| 关 键 词： | CO2气体 异常落实 地震地下流体 地球化学演化 |
| 收稿时间： | 2018/9/6 0:00:00 |
Effect and Mechanism of CO2 Gas in the Genesis and Occurrence of Earthquakes |
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| LI Chenhu,ZHANG Hui,SU Hejun,ZHOU Huiling and XU Qin.Effect and Mechanism of CO2 Gas in the Genesis and Occurrence of Earthquakes[J].Northwestern Seismological Journal,2019,41(3):750-756. |
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| Authors: | LI Chenhu ZHANG Hui SU Hejun ZHOU Huiling and XU Qin |
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| Institution: | Lanzhou Institute of Seismology, CEA, Lanzhou 730000, Gansu, China;Earthquake Agency of Gansu Province, Lanzhou 730000, Gansu, China;Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, Guizhou, China,Lanzhou Institute of Seismology, CEA, Lanzhou 730000, Gansu, China;Earthquake Agency of Gansu Province, Lanzhou 730000, Gansu, China,Lanzhou Institute of Seismology, CEA, Lanzhou 730000, Gansu, China;Earthquake Agency of Gansu Province, Lanzhou 730000, Gansu, China,Lanzhou Institute of Seismology, CEA, Lanzhou 730000, Gansu, China;Earthquake Agency of Gansu Province, Lanzhou 730000, Gansu, China and Earthquake Agency of Gansu Province, Lanzhou 730000, Gansu, China |
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| Abstract: | In this study,the geochemical evolution process of CO2 gas and a series of acid-base equilibrium and redox chemical reactions during seismotectonic activity were systematically studied through the analysis of macroscopic anomalies observed in the seismic risk area of southeastern Gansu.The results showed that deep underground CO2 gas not only acts as a carrier for other trace gases moving toward the surface but also participates in acid-base balance and redox reactions,which is an important influencing condition for deep underground biochemical reactions.The occurrence of earthquake precursors and macroscopic anomalies is accompanied by abnormal changes in CO2.Thus,CO2 gas can be used as a good tracer gas.Therefore,CO2 monitoring should be paid special attention in the observation of earthquake precursors and the implementation of major anomalies. |
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| Keywords: | CO2 gas confirmation of anomaly seismic underground liquid geochemical evolution |
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