摘要
In this paper,the geological and hydrogeological conditions of 38 observational stations of crustal deformation,29 observation wells of groundwater and 15 observation stations of electromagnetic precursor are systematically collected.On the basis of 58 anomalies before 5 moderate and strong earthquakes occurred during 1976-1989,the influence of geological and hydrogeological conditions on the earthquake-reflecting of the stations or wells is analyzed one by one.The conclusion reached is that the main geological conditions influencing the earthquake-reflecting capacity of the stations for crustal deformation are the tectonic unit,the strike,distance and active time of the neighboring faults and the lithologic property of the sites.The main conditions influencing the earthquake-reflecting capacity of the observation wells are the tectonic unit,the strike,distance,the position of the neighboring fault,the depth of the wells and the lithologic property of the aquifers.The main conditions influencing the
In this paper,the geological and hydrogeological conditions of 38 observational stations of crustal deformation,29 observation wells of groundwater and 15 observation stations of electromagnetic precursor are systematically collected.On the basis of 58 anomalies before 5 moderate and strong earthquakes occurred during 1976-1989,the influence of geological and hydrogeological conditions on the earthquake-reflecting of the stations or wells is analyzed one by one.The conclusion reached is that the main geological conditions influencing the earthquake-reflecting capacity of the stations for crustal deformation are the tectonic unit,the strike,distance and active time of the neighboring faults and the lithologic property of the sites.The main conditions influencing the earthquake-reflecting capacity of the observation wells are the tectonic unit,the strike,distance,the position of the neighboring fault,the depth of the wells and the lithologic property of the aquifers.The main conditions influencing the capacity of the observation stations of electromagnetic precursor are the tectonic unit,the composition and thickness of the Cenozoic cover,the soil type near the surface,the basement lithology and the depth of the layer with high electric conductivity in the earth crust.
基金
one of the results of study of "The Earthquake Risk, Earthquake Predictions
Its Countermeasure in the Capital Circle" jointly supported financially by the Department of Scientific Programming
Earthquake Monitoring, Department of Seismic Hazard
