Parallel magnetotelluric modeling with Spectral Element Method

Improving the accuracy and speed of forward performance is of great significance to the effective application of numerical simulation. This paper studies the magnetotelluric forward based on spectral element method (Spectral Element Method, SEM). The second order partial differential equation satisfied by electromagnetic field is used as governing equation, and the electromagnetic field is interpolated by high order basis function. The distribution of electromagnetic field and apparent resistivity is obtained by solving linear equations with bicgstab. In order to further improve the calculation speed, the parallel calculation of multiple frequency points is realized by OpenMP programming mode.