起伏地表地震资料成像方法分析  

Analysis on methods for seismic data imaging in the fluctuant surface areas

作　　者：秦晶晶[1] 谭雅丽[1] 左莹[1] 

机构地区：[1]中国地震局地球物理勘探中心,郑州450002

出　　处：《地球物理学进展》2014年第1期276-281,共6页Progress in Geophysics

摘　　要：西部地区地表起伏剧烈,往往伴随着地下构造复杂,给地震偏移处理工作带来了极大的困难,导致后续的解释结果与实际构造存在一定的差异.因此,复杂地区的地震资料成像问题显得尤为重要.文章通过对复杂地表模型的正演模拟以及山区实际地震资料的应用两方面的分析,获得了适合复杂地表的成像方法.结果表明:针对复杂地区,叠加技术成像比偏移技术成像更能真实地反映地下构造形态,是一种提高复杂地区构造成像精度的有效方法;同时,将叠加剖面和偏移剖面两者有机结合,对复杂地表资料进行解释分析,更能体现地下构造的真实形态,为煤矿工作的安全开采提供了有利依据.That the surface dramatic ups and downs in the western region, often accompanied with a complex subsurface structure, brings great difficulties to seismic migration processing. It leads to some differences between the subsequent interpretation results and the actual construction, so the seismic imaging problem in complex region is very important. In this paper, it obtains the imaging method for complex surface by analyzing both the forward modeling of complex surface models and the actual seismic data of the mountains. The results show that： for complex regions, the stacked imaging technology can reflect the true form of the subsurface structure better than the migrated imaging technology, and it is an effective method to improve the accuracy of structural imaging in complex regiom At the same time, the combination of both the stacked section and migrated section can truly reflect the underground structures in complex surface, and it provides a favorable basis for coal mining safety work.

关 键 词：复杂地表 地震成像 正演模拟 叠加剖面 偏移剖面 

分 类 号：P631[天文地球—地质矿产勘探]