.png){kind=icon}
.png){kind=icon}
Return
A new method for solving the magnetotelluric forward problem in geophysics
.png){kind=icon}
PRE
AI
DOI：10.1016/j.anucene.2025.112017.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Solving the Helmholtz equation is a prerequisite for computing the vertical gradient of surface electromagnetic fields, both of which are crucial steps in magnetotelluric (MT) surveys for uranium exploration. Conventional methods such as FDM and FEM require full global field solutions before computing surface derivatives, leading to low efficiency in large-scale modeling. This study proposes the Half Boundary Method (HBM), which incorporates field gradients as variables and establishes nodal relations through element integration. Using recursive computation, HBM directly calculates boundary derivatives without a global solution. In 1D problems, HBM demonstrates higher efficiency and accuracy than FDM across homogeneous, layered, and continuous media. For 2D problems, comparisons with FEM validate the applicability of HBM in uniform media, anomalous bodies, and horst structures, offering an efficient tool for MT forward modeling.
Keywords:
Magnetotelluric
Half-Boundary Method
Helmholtz equation
Forward Problem
Subsurface
Journal
A
IF:
2.3
Papers:
416
Citations:
1.5W
View more organizations