连续电磁剖面法在西亚某区的应用

Application of continuous electromagnetic profiling in Western Asia

(中国石化华东石油局第六物探大队，江苏南京 210007)

(The Sixth Geophysical Prospecting Party of East China Petroleum Bureau; Nanjing 210007; China)

简要阐述了连续电磁剖面法（CEMP）在西亚某区的应用。西亚某区地形起伏大，静态效应严重，地下电阻率变化大，电磁绕射现象严重。通过Robust处理、静校正、带地形二维连续介质反演成像、电磁资料波场分离与偏移成像、综合信息建模与层状介质反演等手段，有效地压制了各种干扰和影响，揭示了该区山与盆地的接触关系，了解了该区变质岩基底性质和埋深的变化，以及火山岩的空间展布。

This paper introduced the application of continuous electromagnetic profiling (CEMP) in western Asia. The survey area characterizes ragged topography, serious static effects and electromagnetic diffractions, as well as rapid changes of resistivity. To unveil the contact configuration of mountain and basin, determine the properties and depth changes of the basement of metamorphic rock, and delineate the volcanic rock, several methods were adopted in data processing, including ROBUST, static correction, topography-constrained inversion for 2D continuous medium, separation of electromagnetic wave field, and comprehensive modeling.