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Acquisition technique of high-resolution shallow seismic data for surveying of urban active faults

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Abstract

In addition to a brief account of characteristics of disturbing waves in urban shallow seismic exploration, an exposition of technical facilities and seismic data acquisition techniques for anti-jamming and high-resolution shallow seismic exploration is given in this paper on the basis of shallow seismic experimental data of active fault surveying in Fuzhou City. The technical measures taken for anti-jamming, improving signal to noise ratio and resolution of seismic data are expounded as well. The experiment shows that the effective approach to accomplishing anti-jamming, high-resolution shallow seismic data acquisition is receiving with mini trace intervals, mini offsets, multi-channel and high-frequency Geophones by using mini-vibrator and the matched seismograph.

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... Seismic reflection wave method can effectively detect the buried depth and velocity structure of stratum or rock mass so as to identify faults. It has been widely and effectively applied in active fault detection (Feng SY et al., 2010;He ZQ et al., 2007;Liu BJ et al., 2002). In the field construction of shallow seismic reflection detection, the survey line should be as vertical as possible to the fault strike, span and effectively control the fault, and be far away from the site environment of various disturbance sources (Hu G et al., 2016;Ma ZX et al., 2018). ...
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