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A Model Study of Processing Methods of Seismic Refraction Data for Mapping Geological Discontinuities - GRM, GLI, Tomography  

Kim, Ji-Soo (Dept. of Earth and Environmental Sciences.Institute for Basic Sciences, Chungbuk University)
Kim, Su-Hyun (Byucksan Engineering Co., Ltd. Geotechnical Division)
Lee, Jun-Ho (Dept. of Earth and Environmental Sciences.Institute for Basic Sciences, Chungbuk University)
Kim, Won-Ki (Dept. of Earth and Environmental Sciences.Institute for Basic Sciences, Chungbuk University)
Lee, Yong-Jae (Dept. of Earth and Environmental Sciences.Institute for Basic Sciences, Chungbuk University)
Publication Information
The Journal of Engineering Geology / v.16, no.4, 2006 , pp. 327-335 More about this Journal
Abstract
Three processing strategies of seismic refraction data are tested in terms of velocity and depth profiles or structures for mapping of geological discontinuities: GRM(generalized reciprocal method), GLI(generalized linear inversion), Tomography. The test data used in this study are the shot gathers reconstructed by numerical modeling for the structures of 3 planar layers(horizontal, inclined), the buried vertical fracture zones, and vertical fault zones. Tomography is shown to be very efficient for mapping of more complicated tone such as vertical fault and buried fracture zones, whereas GRM and GLI can be useful for horizontal and/or inclined layers, probably on their bases of analysis of first arrivals in travel time curves.
Keywords
Seismic refraction method; GRM; GLI; Tomography;
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