| 山西地震带北段与张家口——渤海地震带不同深度CO_2和Rn气体通量的差异性 |
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| 引用本文： | 赵红坤,王万丽,周晓成,石宏宇,孙玉涛,刘永梅.山西地震带北段与张家口——渤海地震带不同深度CO_2和Rn气体通量的差异性[J].地震地磁观测与研究,2020,41(2):113-122. |
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| 作者姓名： | 赵红坤 王万丽 周晓成 石宏宇 孙玉涛 刘永梅 |
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| 作者单位： | 1.中国廊坊 065000 中国地质科学院地球物理地球化学勘查研究所;2.中国北京 100036 中国地震局地震预测研究所;3.中国北京 100083 中国地质大学(北京);4.中国石家庄 050031 河北地质大学资源学院;5.中国呼和浩特 010010 内蒙古自治区地震局 |
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| 基金项目： | 中国地震局地震预测研究所基本科研业务费（项目编号：2016IES010304，2017IES010205，2018IES010104）；国家重点研发计划（项目编号：2017YFC1500501）；国家自然科学基金面上项目（项目编号：41673106） |
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| 摘 要： | 2014年在山西地震带北段和张家口—渤海地震带布设35个测量剖面,测量土壤气CO_2、Rn浓度及深度20 cm、1 m的CO_2和Rn通量。测量结果表明:(1) CO_2、Rn浓度与深度20 cm、1 m的CO_2、Rn通量的平均值和最大值变化趋势大致相同,均呈自西向东的增大趋势;(2)深度20 cm、1 m的CO_2和Rn通量相关性均不明显,但1 m深的CO_2、Rn通量明显较高;(3) CO_2和Rn浓度、通量变化主要与区域复杂的地震活动性和断层活动性有关,主要受到地表化学成分和区域岩石地球化学影响。
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| 关 键 词： | 土壤气 CO2 Rn 深度 通量 山西地震带和张-渤地震带 |
Differences of CO2 and Rn gas fluxes at different depths between the North section of Shanxi seismic zone and Zhang-Bo seismic zone |
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| ZHAO Hongkun,Wang Wanli,ZHOU Xiaocheng,SHI Hongyu,SUN Yutao,LIU Yongmei.Differences of CO2 and Rn gas fluxes at different depths between the North section of Shanxi seismic zone and Zhang-Bo seismic zone[J].Seismological and Geomagnetic Observation and Research,2020,41(2):113-122. |
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| Authors: | ZHAO Hongkun Wang Wanli ZHOU Xiaocheng SHI Hongyu SUN Yutao LIU Yongmei |
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| Institution: | 1.Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China;2.Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China;3.China University of Geosciences, Beijing 100083, China;4.School of Nature Resources, Hebei GEO University, Shijiazhuang 050031, China;5.Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010010, China |
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| Abstract: | Using observations at 35 measurement profiles arranged in the northern Shanxi seismic zone and Zhang Jiakou-Bohai seismic zone in 2014, we investigated CO2 and Rn concentrations, and the gas fluxes of the CO2 and Rn at the depths of 20 cm and 1 m. The results showed that:①The variation trends of the average and maximum values of CO2 and Rn soil gas concentrations, 20 cm deep and 1m deep CO2 and Rn fluxes were basically the same, which both showed an increasing trend from west to east; ②The correlation coefficient of CO2 and Rn fluxes at the depths of 20 cm and 1 m were both low, but the CO2, Rn fluxes at the depth of 1 m were significantly higher than that of 20 cm; ③The concentrations and fluxes of CO2 and Rn are mainly related to regional complex seismicity and fault activity and affected by surface chemical composition and regional rock geochemistry. |
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| Keywords: | soil gases CO2 Rn depth fluxes Shanxi seismic zone and Zhang-Bo seismic zone |
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