瞬变电磁法二维有限差分正演模拟研究  

Transient Electromagnetic 2-D FDTD Forward Modeling

作　　者：辛会翠 XIN Hui-cui(Department of Computer and Information Engineering, Chengde Petroleum College,Chengde 067000, Hebei, China)

机构地区：[1]承德石油高等专科学校计算机与信息工程系,河北承德067000

出　　处：《承德石油高等专科学校学报》2020年第5期64-69,共6页Journal of Chengde Petroleum College

摘　　要：基于Dufort-Frankel有限差分技术,从电磁场普遍规律——麦克斯韦方程组出发,介绍了瞬变电磁法二维有限差分正演模拟理论,涉及到控制方程、网格离散及差分方程的推导,初始条件的求解、初始时间、时间步长的确定,以及边界条件处理等。对典型二维模型进行了正演模拟,分析总结了瞬变电磁二维响应特征。Based on Dufort-Frankel finite difference method,a two-dimensional finite difference forward modeling theory of transient electromagnetic method is introduced from the universal law of electromagnetic field in Maxwell’s equations.The introduction of this theory involves derivation of control equations,mesh discretization and difference equations,as well as the solution of initial condition,the determination of initial time and time step,and the treatment of boundary condition,etc..The forward modeling of the typical two-dimensional model is carried out,and the characteristics of the transient electromagnetic two-dimensional response are analyzed.

关 键 词：有限差分 瞬变电磁法 正演模拟 

分 类 号：P631.3[天文地球—地质矿产勘探]