张志相,王江,张帆,等. 唐山地区断层土壤气体CO2连续观测台阵数据分析[J]. 华北地震科学,2022, 40(4):69-76. doi:10.3969/j.issn.1003−1375.2022.04.010.
引用本文: 张志相,王江,张帆,等. 唐山地区断层土壤气体CO2连续观测台阵数据分析[J]. 华北地震科学,2022, 40(4):69-76. doi:10.3969/j.issn.1003−1375.2022.04.010.
ZHANG Zhixiang,WANG Jiang,ZHANG Fan,et al. Analysis of Continuous Observation Array Data of Fault Soil Gas CO2 in Tangshan Area[J]. North China Earthquake Sciences,2022, 40(4):69-76. doi:10.3969/j.issn.1003−1375.2022.04.010.
Citation: ZHANG Zhixiang,WANG Jiang,ZHANG Fan,et al. Analysis of Continuous Observation Array Data of Fault Soil Gas CO2 in Tangshan Area[J]. North China Earthquake Sciences,2022, 40(4):69-76. doi:10.3969/j.issn.1003−1375.2022.04.010.

唐山地区断层土壤气体CO2连续观测台阵数据分析

Analysis of Continuous Observation Array Data of Fault Soil Gas CO2 in Tangshan Area

  • 摘要: 利用唐山地区9个断层土壤气体CO2浓度观测点构成的连续观测台阵2018—2020年观测数据,分析发现该地区断层土壤气体CO2年变动态主要受地温及降雨量影响;在2018年唐山古冶M3.3地震、2019年唐山丰南M4.5地震和2020年唐山古冶M5.1地震前一个月左右,赵各庄、靳庄、北泊观测点记录到不同程度的CO2浓度异常变化,异常形态主要有阶跃上升、震荡式上升和突跳3种,异常峰值最大为背景值的3.8倍。连续观测数据的异常变化可能包含地震前兆信息。

     

    Abstract: Based on the observation data from 2018 to 2020 of nine continuous observation stations constructed in Tangshan area, it is found that the annual variation of fault soil gas CO2 is mainly affected by ground temperature and rainfall. About one month before the 2018 Tangshan Guye M3.3 earthquake, 2019 Tangshan Fengnan M4.5 earthquake and 2020 Tangshan Guye M5.1 earthquake, different degrees of abnormal changes were recorded in Zhaogezhuang, Jinzhuang and Beipo. The abnormal patterns mainly included step rise, oscillation rise and sudden jump. The maximum abnormal peak value is 3.8 times of the background value. Abnormal changes in continuous observation data may contain earthquake precursory information.

     

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