收稿日期: 2013-10-15
修回日期: 2014-03-17
网络出版日期: 2014-11-15
基金资助
国家重点基础研究发展计划(973)项目 (2009CB219307)资助
Relief surface seismic wave forward simulation in desert area and data processing
Received date: 2013-10-15
Revised date: 2014-03-17
Online published: 2014-11-15
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 . DOI: 10.7523/j.issn.2095-6134.2014.06.011
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.
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