摘要We investigated how density and quality of mesh around interest domain affect electromagnetic (EM) responses of 3D Earth layered media using finite element method (FEM). Effect of different mesh shapes was also investigated using a method of mixing structured and unstructured mesh. As a case study, we estimated the effects of meshing on selectivity phenomenon of seismic electric signal (SES). Our results suggest that the relative errors resulting from mesh effects may not be negligible, which may lead to some unconvincing explanation of the SES selectivity based on the numerical modeling results.
Abstract：We investigated how density and quality of mesh around interest domain affect electromagnetic (EM) responses of 3D Earth layered media using finite element method (FEM). Effect of different mesh shapes was also investigated using a method of mixing structured and unstructured mesh. As a case study, we estimated the effects of meshing on selectivity phenomenon of seismic electric signal (SES). Our results suggest that the relative errors resulting from mesh effects may not be negligible, which may lead to some unconvincing explanation of the SES selectivity based on the numerical modeling results.
基金资助:the National R & D Special Fund of Public Welfare Industry (No. 200808069), National Natural Science Foundation of China (Nos. 40974038 and 41025014), and the Joint Research Collaboration Program by the Ministry of Science and Technology of China (No. 2010DFA21570)
通讯作者:
Qiao Wang
E-mail: huangq@pku.edu.cn
引用本文:
Qiao Wang, Guangjing Xu, Zhanhui Li, Qinghua Huang. Meshing effects of the 3-D FEM numerical modeling in seismo-electromagnetics: An application in selectivity of seismic electric signal (SES)[J]. 《地震学报》英文版, 2011, 24(6): 565-576.
Qiao Wang, Guangjing Xu, Zhanhui Li, Qinghua Huang. Meshing effects of the 3-D FEM numerical modeling in seismo-electromagnetics: An application in selectivity of seismic electric signal (SES). Earthquake Science, 2011, 24(6): 565-576.
