| 海洋CSEM和MT一维联合反演研究 |
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| 引用本文： | 赵宁,王堃鹏,秦策.海洋CSEM和MT一维联合反演研究[J].物探化探计算技术,2014(2):148-151. |
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| 作者姓名： | 赵宁 王堃鹏 秦策 |
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| 作者单位： | [1]成都理工大学地球物理学院,成都610059 [2]河南理工大学计算机学院,焦作454000 |
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| 基金项目： | 国家高技术研究发展计划资助项目（2012AA09A201） |
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| 摘 要： | 传统频率域海洋可控源电磁(MCSEM)法利用极化方向电场实部与虚部信息进行反演,由于海底沉积层电阻率一般较低,在海底浅部能取得较为理想的反演效果,但难以探测到海底几千米下的深部基底。这里利用海洋可控源电磁和海洋大地电磁(MT)一维联合反演程序,采用奥克姆反演算法,尝试对海洋电阻率模型进行联合反演。通过反演试算发现,利用频率更低的海洋MT加入反演,不会影响浅部反演效果,同时能探测到深部基底,为海底油气勘探提供了更多技术手段。
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| 关 键 词： | MCSEM MT 联合反演 |
Research on 1-D joint inversion of marine CSEM and MT |
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| ZHAO Ning,WANG Kun-peng,QIN Ce.Research on 1-D joint inversion of marine CSEM and MT[J].Computing Techniques For Geophysical and Geochemical Exploration,2014(2):148-151. |
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| Authors: | ZHAO Ning WANG Kun-peng QIN Ce |
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| Institution: | 1. College of Geophysics, Chengdu University of Technology, Chengdu 610059, China; 2. College of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454000,China) |
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| Abstract: | Traditional mnarine controlled source （MCSEM） in frequency domain uses electric real and imaginary part in polariza tion direction for inversion, which can receive relative ideal result in shallow seafloor. However the resistivity of seafloor sedi ment is low in general, Based on the skin depth, the low frequency of MCSEM can hardly detect deep sediment under several kilometers, This paper adopts the joint inversion of marine CSEM and MT as well as Occam inversion method to invert marine resistivity model. By the experiment, we can see that adopting lower frequency will not influence the effect of inversion and can detect the deep sediment which offers more technology means for exploring marine seafloor oil and gas. |
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| Keywords: | MCSEM MT joint inversion |
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