阎述, 陈明生. 电偶源频率电磁测深三维地电模型有限元正演[J]. 煤田地质与勘探, 2000, 28(3): 50-56.
引用本文: 阎述, 陈明生. 电偶源频率电磁测深三维地电模型有限元正演[J]. 煤田地质与勘探, 2000, 28(3): 50-56.
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Yan Shu, Chen Mingsheng. FINITE ELEMENT SOLUTION OF THREE-DIMENSIONAL GEOELECTRIC MODELS IN FREQUENCY ELECTROMAGNETIC SOUNDING EXCITED BY A HORIZONTAL ELECTRIC DIPOLE[J]. COAL GEOLOGY & EXPLORATION, 2000, 28(3): 50-56.
Citation: Yan Shu, Chen Mingsheng. FINITE ELEMENT SOLUTION OF THREE-DIMENSIONAL GEOELECTRIC MODELS IN FREQUENCY ELECTROMAGNETIC SOUNDING EXCITED BY A HORIZONTAL ELECTRIC DIPOLE[J]. COAL GEOLOGY & EXPLORATION, 2000, 28(3): 50-56.
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电偶源频率电磁测深三维地电模型有限元正演

FINITE ELEMENT SOLUTION OF THREE-DIMENSIONAL GEOELECTRIC MODELS IN FREQUENCY ELECTROMAGNETIC SOUNDING EXCITED BY A HORIZONTAL ELECTRIC DIPOLE

    摘要
  • 摘要: 在有源变频测深(包括可控源音频大地电磁测深CSAMT)的三维有限元正演中,应用了吸收边界条件和边元有限元算法,计算精度为3%左右,基本上可满足电偶极源三维地电模型情况下频率电磁测深响应特征的分析。同时由于广义变分概念的引入,可使泛函的变分原理应用于有耗媒质电磁场问题。

     

    Abstract: Absorbing boundary conditions and edge element finite element method are used in 3-D active frequency electromagnetic sounding(including CSAMT) modeling.Benchmark calculation shows that the accuracy of the method is about 3%,which is acceptable for the purpose of analyzing response characteristics of frequency sounding with an electric diploe source for 3-D modeling.Besides,the general variation principle was introduced to solve electromagnetic problem in lossy media.

     

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