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Geophysical Methods of Seismically Active Fault Detection in Cities

Wu Jianping (Institute of Geophysics,CSB,Beijing,100081)  
This paper introduces the main geophysical methods of seismically active fault detection in city areas,through some examples about seismically active fault detections in some cities at home and abroad. Because of specific interference environment of city areas,it is necessary to improve and readjust traditional technical methods in seismically active fault detections of city areas,so as to increase the anti interference ability of the detection methods.The seismically active fault detections in cities should make full use of high resolution shallow seismic prospecting and sounding of artificial earthquakes,which has the advantage of high precision,according to the geophysical features of various cities,coordinating with other geophysical methods,such as electrical prospecting,magnetic prospecting,gravity survey and natural earthquake observation,through a comprehensive analysis and interpretation to increase the resolution and reliability of detection results.
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