Author:
Ran Yingqiang,Dai Shikun,Chen Qingrui,Zhang Ying,Ling Jiaxuan
Abstract
Abstract
Strong magnetic body has self-demagnetization effect, which is not conducive to processing and interpretation of magnetic measurement data. A 2D numerical simulation method in the spatial-wavenumber mixed domain is proposed to calculate magnetic anomalies of 2D strong magnetic objects. In this method, the partial differential equation satisfying the magnetic potential of 2D strong magnetic body is transformed into independent ordinary differential equation between different wave numbers by 1D FFT, which greatly reduces the computation and storage requirements. The compact operator is used to solve the strong magnetic field by iterative method. The algorithm provides a new efficient and high-precision method for the forward modeling of the 2D magnetic anomalies.
Subject
Computer Science Applications,History,Education
Reference4 articles.
1. Solving the magneto statics field problem (a case of high susceptibility) by means of the method of subsections;Eskola;Geoexploration,1980
2. Forward modeling of magnetic data using the finite volume method with a simultaneous consideration of demagnetization and romance;Ou;Chinese Journal of Geophysics. (in Chinese),2018
3. Iterative magnetic forward modeling for high susceptibility based on integral equation and Gauss-fast Fourier transform;Ouyang;Geophysics,2020