大地电磁垂直磁场和倾子正反演方法研究

项目名称： 大地电磁垂直磁场和倾子正反演方法研究

项目编号： No.41274078

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 王绪本

作者单位： 成都理工大学

项目金额： 88万元

中文摘要： 通过二、三维大地电磁（MT）正演模拟，研究大地电磁垂直磁场分量和倾子在复杂地质条件下的响应特征，在此基础上开展垂直磁场分量和倾子反演成像方法研究，分析大地电磁垂直分量和倾子在实际资料处理解释中的作用。通过异常场反演成像与视电阻率和阻抗相位反演成像的特点比较，建立一种大地电磁多参数联合解释方法体系。立项的意义在于：作为异常场，垂直磁场分量和倾子在对提高大地电磁解释精度，压制静态位移和地形影响具有积极的意义。结合大地电磁垂直磁场分量、倾子、视电阻率和阻抗相位进行多参数联合解释将有助于降低MT方法研究复杂构造的多解性，提高大地电磁测深资料解释的准确度和分辨率。垂直磁场分量和倾子的反演成像理论将有助于大地电磁测深反演成像技术的发展，具有广阔的应用前景。

中文关键词： 大地电磁；倾子；正演模拟；三维反演；并行计算

英文摘要： By 2D and 3D magnetotelluric modeling to discuss the response characteristics of magnetotelluric vertical magnetic-component and tipper under complex geological conditions. Base on this, to study inversion and imaging method of the vertical magnetic-component and tipper, and will realize that the vertical magnetic-component and tipper can be used in the the actual data processing and interpretation. Base on analysis and compare the characteristics of vertical magnetic-component iamging, tipper inversion, apparent resistivity inversion and impedance phase inversion, to build a joint inversion and interpretation system of magnetotelluric multi parameters. The Project significance lies in: as anomaly field, vertical magnetic-component and Tipper has positive affection on raising magnetotelluric interpretation accuracy, and interpretation of vertical magnetic-component and Tipper is helpful to suppress the static shift and topography affects. The multi-parameter joint inversion and interpretation, including the vertical magnetic-component of Magnetotelluric field, MT tipper, the apparent resistivity and impedance phase, will be helpful to reduce multiple solutions of the MT while to study the complex structure, and can improve the accuracy and resolution of magnetotelluric sounding data interpretation. The inversio

英文关键词： Magnetotelluric；Tipper；Modeling；3D Inversion；Parallel Computing