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[1]FANG Zhen,HUANG Xianliang,TAO Yuechao,et al.Analysis of Soil Hydrogen Anomaly in the Huoshan Seismic Window Area[J].Journal of Seismological Research,2023,46(02):237-244.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0025 ]

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Analysis of Soil Hydrogen Anomaly in the Huoshan Seismic Window Area

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 46 Number of periods: 2023 02 Page number: 237-244 Column: Public date: 2023-03-10

Title:: Analysis of Soil Hydrogen Anomaly in the Huoshan Seismic Window Area

Author(s):: FANG Zhen¹; 2; HUANG Xianliang¹; 2; TAO Yuechao¹; LI Shenliang³; TAO Fangyu⁴; YANG Yuanyuan¹; ZHU Houlin⁴; LU Dongliang⁴; (1.Anhui Earthquake Agency,Hefei 230031,Anhui,China)(2.Mengcheng National Geophysical Observatory,Mengcheng 233500,Anhui,China)(3.Hefei Earthquake Monitoring Central Station,Hefei 230000,Anhui,China)(4.Jinzhai Earthquake Monitoring Central Station,Jinzhai 237300,Anhui,China)

Keywords:: fault hydrogen concentration; hydrogen source; small earthquake activity; the Huoshan Seismic Window area

CLC:: P313.32

DOI:: 10.20015/j.cnki.ISSN1000-0666.2023.0025

Abstract:: This paper evaluates the reliability of the long-term,high-accuracy soil hydrogen data observed in the Huoshan Seismic Window area according to the distribution of measurements,and analysis of meteorological influencing factors.The relationship between the hydrogen anomaly and the activity of small earthquakes is preliminarily analyzed in the study area.The results show that the hydrogen concentration in the Tudiling-Luoerling fault has a large precursory anomaly extent,and is sensitive to the seismic activity around the observational sites on the fault,suggesting a better earthquake-precursory efficiency.The metamorphic rocks contain H₂-gas sources in the study area.Stress accumulation accelerates the release of H₂ in the fault zone,and tensile faults provide a good channel for H₂ migration.

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Last Update: 2023-03-10