摘要
在地形复杂地区进行地震勘探 ,静校正是一个普遍的难题 .针对常规静校正方法的不足 ,提出了一种利用多项式拟合单炮记录初至时间作地表静校正的方法 .根据地形起伏对反射波到达时间的影响和对初至时间的影响具有很大的相似性 ,通过拟合单炮记录的初至时间 ,求取该炮各道拟合初至时间与实际初至时间的差值 ,作为该道对应的地表静校正量 ,然后再按常规方法进行炮点校正、低速带校正 .采用该方法对地形复杂地区的实际地震资料进行了处理 。
Static correction is a difficult problem in seismic exploration in a complicated topography area. To overcome the shortcomings of traditional static correction, a new method for static correction on ground surface by fitting the first breaks of direct waves using polynomial was put forward. Based on the fact that the influence of topography on the arrival of reflected wave is similar to that on the first breaks,and by fitting the first breaks, the difference between real arriving time and the fitted time was obtained. Then the difference was used in traditional shot static correction and low velocity zone static correction. The application of this method in processing field seismic data from complicated topography area has got a good effect.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2001年第1期87-90,共4页
Journal of China University of Mining & Technology
基金
煤炭科学基金!资助项目 ( 96地 10 10 4)
