THE APPLICATION OF THE COMMON OFFSET FIRST ARRIVAL CURVE COMBINED WITH COMMON-SOUCE-LOCATION BASIS TO PICKING FIRST ARRIVALS OF SEISMIC WAVE
PI Jin-yun, WANG Yan-chun, ZHANG Jing
Key Laboratory of Underground Information Detection Technique and Instrument of Ministry of Education, China University of Geosciences, Beijing 100083, China
This paper deals with the first arrival batch modification methods which use the common-offset first arrival curve combined with the common-source-location basis by setting different parameters aiming at overestimation and underestimation of first arrivals. It also presents a new approach to the automatic picking of the later phase of the first arrival rather than the first break using a trough-to-peak ratio technique combined with expected arrival time, picking window and threshold. The application of these new methods remarkably improves the precision and efficiency of the first arrivals picking in areas of poor signal-to-noise ratios.
皮金云, 王彦春, 张静. 用共偏移距初至曲线联动共炮点道集拾取地震波初至[J]. 物探与化探, 2007, 31(2): 164-166,170.
PI Jin-yun, WANG Yan-chun, ZHANG Jing. THE APPLICATION OF THE COMMON OFFSET FIRST ARRIVAL CURVE COMBINED WITH COMMON-SOUCE-LOCATION BASIS TO PICKING FIRST ARRIVALS OF SEISMIC WAVE. Geophysical and Geochemical Exploration, 2007, 31(2): 164-166,170.
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