| 磁偶源2.5维瞬变电磁场全空间FDTD数值模拟 |
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| 引用本文： | 杨海燕,岳建华.磁偶源2.5维瞬变电磁场全空间FDTD数值模拟[J].物探与化探,2008,32(3):326-330. |
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| 作者姓名： | 杨海燕 岳建华 |
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| 作者单位： | 中国矿业大学,资源与地球科学学院,江苏,徐州,221116 |
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| 基金项目： | 国家自然科学基金
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国家自然科学基金 |
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| 摘 要： | 为解决模拟瞬变电磁场在3维介质中传播出现的计算量大、对计算机要求高等问题,使用了3维磁偶极源来模拟2维均匀介质和层状介质中方形和薄板低阻体的全空间响应特征。模拟中使用了时域有限差分法,采用非均匀网格和时间步长,分析了瞬变电磁场在均匀介质和层状介质中的传播规律,以及巷道和交界面对场的影响特征,为解释全空间均匀介质和层状介质TEM异常提供参考。
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| 关 键 词： | 磁偶源 瞬变电磁场 时域有限差分法 模拟计算 |
| 文章编号： | 1000-8918(2008)03-0326-05 |
| 收稿时间： | 2007-05-10 |
| 修稿时间： | 2007年5月10日 |
2.5-D NUMERICAL SIMULATION ON THE WHOLE-SPACE TEM FIELD WITH A MAGNETIC DIPOLE SOURCE |
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| YANG Hai-yan,YUE Jian-hua.2.5-D NUMERICAL SIMULATION ON THE WHOLE-SPACE TEM FIELD WITH A MAGNETIC DIPOLE SOURCE[J].Geophysical and Geochemical Exploration,2008,32(3):326-330. |
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| Authors: | YANG Hai-yan YUE Jian-hua |
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| Institution: | School of Resource and Earth Science China University of Mining&;Technology, Xuzhou 221116, China |
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| Abstract: | Because of the huge computation and limitation of computer resource when modeling the diffuse of the transient field in three dimensional medium, FDTD, the nonuniform grid and time step length will be used to study the whole-space response characteristic of two dimensional square and sheet conductive body, located both in uniform medium, and in the layered medium, with a 3 dimensional magnetic dipole, And the diffused regularity of the transient field in them, the effect of laneway and boundary will be also discussed. The objectives are to provide interpretation guidelines for the TEM anomalies arising from the full-space uniform and layered medium. |
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| Keywords: | Magnetic dipole source Transient electromagnetic field FDTD method Modeling |
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