中国科学院大学学报2014，Vol.31Issue(6)：799-805,7.DOI:10.7523/j.issn.2095-6134.2014.06.011
沙漠区起伏地表地震波正演模拟与资料处理
Relief surface seismic wave forward simulation in desert area and data processing
摘要
Abstract
Considering the complex sand dune near-surface conditions in desert area,we carry out the forward simulation and data processing study.We present seismic wave numerical simulating algorithm and key parameters used for relief surface case.We introduce the random cave medium to depict the incompact sand dune structure,fill the practical air velocity above the surface,and simulate the seismic data acquisition in desert area.We take practical seismic data in desert area as example and use theoretical model to do the data processing and wave field analysis.The results show that the sand dunes' incompact structure in desert area is the main cause for the low S/N ratio in the pre-stack gather and stacking section.The pre-stack time migration method effectively improves the quality of the migration section and common reflection point gather by the weighted diffraction summation function,which provides certain significance for relief surface practical seismic data processing in desert area.关键词
沙漠地表/正演模拟/地震资料处理/信噪比/数据分析Key words
desert surface/ forward simulation/ seismic data processing/ signal and noise ratio/data analysis分类
天文与地球科学引用本文复制引用
陈可洋,吴沛熹,张德新,杨微..沙漠区起伏地表地震波正演模拟与资料处理[J].中国科学院大学学报,2014,31(6):799-805,7.基金项目
国家重点基础研究发展计划(973)项目(2009CB219307)资助 （973）
