摘要
鄂尔多斯盆地西缘地区不仅地表起伏大,地下构造复杂,而且黄土层厚度变化也很大,导致地震勘探效果较差。该区重力和CEMP勘探效果好坏的关键是能否消除巨厚黄土层和地形起伏对重力异常的影响,以及减小或压制地形和随机噪声对CEMP资料的静态位移影响。对此提出了一套针对黄土覆盖区的重力异常校正方法和压制黄土塬区CEMP静态位移的方法,通过在该区进行CEMP和高精度重力资料综合处理解释及分析研究,取得了很好的勘探效果,对优选勘探有利目标发挥了较好的作用。
The western margin area of Ordos Basin is characteristic of not only larger fluctuant surface and complex underground structure,but also large variation of loess thickness,leading to poor effect of seismic exploration.The key of effects in gravity and CEMP exploration is whether the influence of the fluctuation of giant-thickness of loess layer and topographic fluctuation on gravity anomaly can be eliminated or not,and reduces or suppresses the influence of topography and random noise on static displacement...
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2008年第2期229-232,128,共5页
Oil Geophysical Prospecting
关键词
黄土塬
电性和密度特征
地形和黄土层校正
拟地震电阻率成像技术
重磁电震联合处理解释技术
loess plateau
characters of electric property and density
correction of topography and loess layer
pseudo-seismic resistivity imaging technique
gravity-magnetic-electric-seismic-joint processing and interpretation technique
