Research on 3D marine electromagnetic interferometry with synthetic sources for suppressing the airwave interference

作     者：张建国 武欣 齐有政 黄玲 方广有 

作者机构：中国科学院电磁辐射与探测技术重点实验室北京100190 中国科学院大学北京100039 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2013年第10卷第4期

页      面：373-383,510页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 0707[理学-海洋科学] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：supported by the national project"Deep Exploration Technology and Experimentation"(SinoProbe-09-02) 

主　　题：marine CSEM reflection response airwave synthetic aperture method 3D deconvolution interferometry up- and down-going field decomposition 

摘      要：In order to suppress the airwave noise in marine controlled-source electromagnetic （CSEM） data, we propose a 3D deconvolution （3DD） interferometry method with a synthetic aperture source and obtain the relative anomaly coefficient （RAC） of the EM field reflection responses to show the degree for suppressing the airwave. We analyze the potential of the proposed method for suppressing the airwave, and compare the proposed method with traditional methods in their effectiveness. A method to select synthetic source length is derived and the effect of the water depth on RAC is examined via numerical simulations. The results suggest that 3DD interferometry method with a synthetic source can effectively suppress the airwave and enhance the potential of marine CSEM to hydrocarbon exploration.