AN ANALYSIS OF STATIC CORRECTION ERROR OF THE CONVENTIONAL LOW VELOCITY ZONE UNDER THE CONDITION OF ROLLING LOW VELOCITY ZONE
LIU Jang-ping1, ZHANG You-ming1, BAI Xing-ying2, ZHANG Li-qin1
1. Department of Geophysics, China University of Geosciences, Wuhan 430074, China;
2. Zhongyuan Exploration & Development Science Institute, Puyang 457001, China
Based on calculation and analysis of conventional static correction error in the theoretical model for typical low velocity zone rolling terrain, this paper points out that adopting the conventional static correction method to proceed low velocity zone static correction under the condition of low velocity zone rolling terrain would lead to rather prominent correction error, which is expressed not only in generating spurious phase axis feature phenomenon, but also in causing wrong longitudinal and latitudinal velocity change in reversion velocity. It is also demonstrated in this paper that the low velocity zone static correction error is mainly related to such factors as the shot detector separation, the depth of target strarum, the curvature and form of the bottom boundary and the velocity difference between the low velocity zone and the bodrock.
刘江平, 张友明, 白兴盈, 张丽琴. 低速带底面起伏条件下常规低速带静校正误差及分析[J]. 物探与化探, 2001, 25(1): 61-65,69.
LIU Jang-ping, ZHANG You-ming, BAI Xing-ying, ZHANG Li-qin . AN ANALYSIS OF STATIC CORRECTION ERROR OF THE CONVENTIONAL LOW VELOCITY ZONE UNDER THE CONDITION OF ROLLING LOW VELOCITY ZONE. Geophysical and Geochemical Exploration, 2001, 25(1): 61-65,69.
