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基于非正交网格的带地形三维瞬变电磁场模拟 被引量:18

Non-orthogonal-Grid-based three dimensional modeling of transient electromagnetic field with topography
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摘要 本文采用非正交网格时间域有限差分(FDTD)算法开展带地形瞬变电磁场的正演研究,并提出了一种采用非等权投影的改进非正交网格算法,提高了带地形瞬变电磁场三维正演算法的精度.对不同地形模型的数值模拟结果表明,地形的深度、宽度以及地形与源的相对位置等都可能对瞬变电磁场产生影响. We applied the non-orthogonal grid finite difference time domain (FDTD) method to the 3D Transient electromagnetics (TEM) simulation with topography. We also presented a modified non-orthogonal grid FDTD method taking into account a weighted projection technique. The numerical simulation results based on various topographical models indicate that the topographical parameters such as the depth, width and source distance could affect the simulated TEM field.
出处 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2013年第12期4245-4255,共11页 Chinese Journal of Geophysics
基金 国家杰出青年基金项目(41025014) 科技部国际合作项目(2010DFA21570)资助
关键词 瞬变电磁法 地形效应 时间域有限差分 非正交网格 Transient electromagnetics, Topography effect, Finite Difference Time Domain(FDTD), Non-orthogonal grid
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参考文献21

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