Test analysis of multi-channel transient surface wave data acquisition in loess plateau
Wen TANG1,2, Jiang LI3, Tie-Wang WANG4
1. School of Earth Sciences and Engineering,Xi'an Shiyou University,Xi'an 710065,China 2. Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi'an Shiyou University,Xi'an 710065,China 3. Xi'an Research Institute of China Coal Science and Industry Group Co. Ltd.,Xi'an 710077,China 4. Changqing Branch of Geophysical Research Institute,BGP,Xi'an 710021,China
In order to apply the method of multi-channel analysis surface wave (MASW) to geological survey,the authors studied multi-channel transient surface wave data acquisition in loess plateau.The effect of some acquisition parameters,such as different excitation sources,number of receiving channels,station intervals and the minimum offset,on the record quality of the data was analyzed.In addition,the suitable data acquisition method and parameters for the loess plateau were pointed out.The processing results of the actual data reflect the velocity structure and the loess type characteristics in the near surface of the work area,which indicates that the selection method of the data acquisition parameters is reasonable,which lays a foundation for the application of MASW in the geological survey in the loess plateau area.
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