| 二维频率测深边界单元法正演计算 |
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| 引用本文： | 马钦忠,钱家栋.二维频率测深边界单元法正演计算[J].地球物理学报,1995,38(2):252-261. |
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| 作者姓名： | 马钦忠 钱家栋 |
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| 作者单位： | 国家地震局兰州地震研究所, 兰州 730000 |
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| 摘 要： | 在二维层状介质中含有横向非均匀体的地电断面情况下，对电偶源的偶极长度作了延长，并选取了适当的基本解及无穷远边界条件，因而将相应的含源谐变电磁场的边值问题转化为较简单的边界积分方程．用边界单元法求出了相应的电磁场分量，进而计算阻抗视电阻率，并对这一算法作了相应的检验．
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| 关 键 词： | 变频电磁测深 阻抗视电阻率 边界元 基本解 |
| 收稿时间： | 1994-01-11 |
BOUNDARY ELEMENT METHOD FOR FORWARD SOLUTION OF TWO DIMENSIONAL FREQUENCY ELECTROMAGNETIC SOUNDING |
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| MA QING-ZHONG, QIAN JIA-DONG.BOUNDARY ELEMENT METHOD FOR FORWARD SOLUTION OF TWO DIMENSIONAL FREQUENCY ELECTROMAGNETIC SOUNDING[J].Chinese Journal of Geophysics,1995,38(2):252-261. |
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| Authors: | MA QING-ZHONG QIAN JIA-DONG |
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| Institution: | Earthquake Research Institute of Lanzhou, SSB, Lanzhou 730000 |
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| Abstract: | The boundary element method is used to calculate the impedance apparent resistivity in frequency electromagnetic sounding for the model of layered medium which contains a two-dimensional inhomogeneous body.In the modelling,the line source of harmonic-varying current is taken,and proper fundamental solution and infinite boundary condition are selected,so that the boundary value problem of the electric field of line source could be converted into a set of boundary integral equations that could be easily solved By the Boundary Element Method.Then the corresponding electromagnetic field and the impedance apparent resistivity could be calculated.Finally,some tests and comparisons of the results by Finite Element Method and Boundary Element Method are made. |
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| Keywords: | Frequency Electromagnetic Sounding Impedance Apparent Resistivity Boundary Element Method |
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