2-D anisotropic magnetotelluric numerical simulation under undulating terrain based on meshfree radial point interpolation method
- DOI
- 10.2991/iceeg-16.2016.86How to use a DOI?
- Keywords
- anisotropic, magnetotelluric, undulating terrain, meshfree method
- Abstract
In view of the problem that widespread existing undulating terrain and anisotropic in the actual geophysical prospecting, we propose a numerical simulation method which only needs discrete nodes to construct the shape function. Assuming the electrical spindle axis of underground anisotropic medium is perpendicular to the plane, another is parallel to the plane, we construct the conductivity tensor model. From the 2-D anisotropic magnetotelluric boundary value problem, we derive the corresponding equivalent linear equation based on radial point interpolation meshfree method, the shape function is constructed by MQ-RBF function, and the coefficient matrix is compressed and stored by the MATLAB's own sparse storage function. The linear equations are solved by BICGSTAB algorithm with incomplete LU decomposition. The simulation results show that the undulating terrain severely affects the distribution of underground electromagnetic field and greatly changes the original anomaly characteristics, topography effect on the observation data is far greater than the influence of the anisotropy coefficient itself.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Tingzhe Huang AU - Yanju Ji AU - Wanyu Huang AU - Tonglin Li PY - 2016/06 DA - 2016/06 TI - 2-D anisotropic magnetotelluric numerical simulation under undulating terrain based on meshfree radial point interpolation method BT - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology PB - Atlantis Press SP - 320 EP - 323 SN - 2352-5401 UR - https://doi.org/10.2991/iceeg-16.2016.86 DO - 10.2991/iceeg-16.2016.86 ID - Huang2016/06 ER -