摘要
By observing the variation of fault soil gases,we can understand the activity of faults and information on earthquake precursors.Two fault soil gas observation spots were set up at the Xiadian fault east of Beijing and at the Houhaoyao geothermal area in Huailai(Hebei Province)during November-December 1989.Concentrations of fault soil gases H2,Ar,CO2,CH4,Hg,etc.were observed.Before several moderate-strong earthquakes in 1990,the concentrations of fault soil gases such as H2 and Hg all showed abnormal variations quite significantly.In this paper,we mainly discuss the relation of these fault soil gases to earthquake activity.
By observing the variation of fault soil gases,we can understand the activity of faults and information on earthquake precursors.Two fault soil gas observation spots were set up at the Xiadian fault east of Beijing and at the Houhaoyao geothermal area in Huailai(Hebei Province)during November-December 1989.Concentrations of fault soil gases H2,Ar,CO2,CH4,Hg,etc.were observed.Before several moderate-strong earthquakes in 1990,the concentrations of fault soil gases such as H2 and Hg all showed abnormal variations quite significantly.In this paper,we mainly discuss the relation of these fault soil gases to earthquake activity.
基金
This project was sponsored by the Joint Earthquake Science Foundation, China
