多域迭代折射静校正及其应用

Iterative refraction static correction in multi-domain and its application

成都理工大学,成都610059

Chengdu University of Technology, Chengdu 610059

静校正是山地和沙漠地震资料处理的难题之一,其方法众多。根据多年的实践经验,总结了一套适合西北地区复杂近地表的折射静校正处理方法。该方法同时从共炮点域、共检波点域及共炮检距域,采用拟合法计算出短波长和长波长静校正并建立近地表模型。实际资料处理结果证明了该方法的可行性和有效性。

Static correction is one of the difficult problems of data processing in mountainous and desert area. There is many a methods available to deal with the problem. On the ground of long experience, the author proposed a suite of refraction static correction methods that are suitable for the complicated surface conditions in the northwest of China. Fitting process was used in the computation of statics of long and short wavelength in domains of common shot, common receiver, and common offset, and a near surface model was also established. The feasibility and validity of the methods was tested with real data.