Fast 3D forward modeling of transient electromagnetic

被引：1
|
作者：
Li R. [1 ]
Wang H. [1 ,2 ]
Xi Z. [1 ,2 ]
Jiang H. [1 ]
Liu Y. [1 ]
机构：
[1] School of Geosciences and Info-Physics, Central South University, Changsha
[2] Marine Mineral Exploration Technology and Equipment Institute, Central South University, Changsha
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2016年 / 47卷 / 10期
基金：
中国国家自然科学基金;
关键词：
3D forward modeling; Flow-through Hankel transform; Transient electromagnetic method; Vector finite-element method;
D O I：
10.11817/j.issn.1672-7207.2016.10.026
中图分类号：
学科分类号：
摘要：
In order to enhance the speed of 3D transient electromagnetic forward modeling, two new techniques were employed. One is combining vector finite-element method with integral equation method to decrease the order of elemental matrix from 24 to 12, which can save much time of the computing large sparse matrix, keep the continuity of boundary conditions, and avoid spurious solutions; the other is adopting flow-through Hankel transform technique to resolve the exhausted time problem through calculating. Bessel function repeatedly while resetting the offsets every time. The results show that the two new techniques not only keep the accuracy of 3D TEM forward technique but also speed up the calculation. © 2016, Central South University Press. All right reserved.
引用
收藏
页码：3477 / 3482
页数：5
相关论文
共 16 条
  • [1] Niu Z., Theory of Time Domain Electromagnetic Method, pp. 1-6, (2007)
  • [2] Li X., The Theory and Application of Transient Electromagnetic Sounding, pp. 1-4, (2002)
  • [3] Xue G., Li X., Di Q., Research progress in TEM forward modeling and inversion calculation, Progress in Geophysics, 23, 4, pp. 1165-1172, (2008)
  • [4] Li J., Zhu Z., Zeng S., Et al., Progress of forward computation in transient electromagnetic method, Progress in Geophysics, 27, 4, pp. 1393-1400, (2012)
  • [5] Epov M.I., Shurina E.P., Nechaev O.V., 3D forward modeling of vector field for induction logging problems, Russian Geology and Geophysics, 48, 9, pp. 770-774, (2007)
  • [6] Li J., 3D numerical simulation for transient electromagnetic field excited by large source loop based on vector finite element method, pp. 3-7, (2011)
  • [7] Sun H., Li X., Li S., Et al., Three-dimensional FDTD modeling of TEM excited by a loop source considering ramp time, Chinese Journal of Geophysics, 56, 3, pp. 1049-1064, (2013)
  • [8] Swidinsky A., Edwards R.N., The transient electromagnetic response of a resistive sheet straight forward but not trivial, Geophysics Journal International, 179, 3, pp. 1488-1498, (2009)
  • [9] Zhang H., Li T., Dong R., Modeling 3-D electromagnetic responses of the electric dipole using volume integral equation method, Progress in Geophysics, 21, 2, pp. 386-390, (2006)
  • [10] Bakr S.A., Mannseth T., An approximate hybrid method for electromagnetic scattering from an underground target, Geoscience and Remote Sensing, IEEE Transactions on Geoscience and Remote Sensing, 51, 1, pp. 99-107, (2013)
12