PROSPECTING EXPLORATION  

出　　处：《Abstracts of Chinese Geological Literature》2018年第1期173-174,共2页中国地质文摘（英文版）

摘　　要：20180424 Luo Tianya （College of Earth Sciences, Guilin University of Technology, Guil- in 541006, China）; Xiong Bin Magnetotelluric Responses of Two--Dimensional Complex Conductivity Structures （Journal of Jilin University, ISSN1671--5888, CN22--1343/P, 47（1）, 2017, p. 215-223, 12 illus., 26 refs. ） Key words： electrical structure, magnetotelluric methods To improve the discretization technique, adaptive unstructured quadrilateral grid finite element （FE）procedure is presented for solving weighted residual formulation of magnetotelluric （MT） fields in 2D conductivity structures. The finer the meshes are, the more accurate the numericalsolutions are. However, this is at the cost of time-consuming and large memory requirement. Adaptive mesh refinement generally provides an optimization of both run time and accuracy since in the method meshes are only refined where the electrical parameters vary intensely, while coarsen in the slow electrical resistivity change region. Due to the fact that regular grids have no potential to incorporate arbitrary topography and complex geologic structures, the authors introduced COMSOL Multiphysics software package to build arbitrary geometries and subdivide them with free quadrilaterals.

关 键 词：PROSPECTING EXPLORATION 

分 类 号：P2[天文地球—测绘科学与技术]