Analysis of PML effectiveness in low-frequency applications (marine geoelectrics)

The goal of this research is to investigate the use of perfectly matched layer (PML) to restrict the computational domain in marine geoelectrics at low frequencies (1–100 Hz). Numerical experiments were performed on unstructured tetrahedral meshes with the vector finite element method using a modified two-level method for solving the system of linear algebraic equations. The PML is introduced in a variational formulation as a subdomain with special coefficients. The tangential component of the electric field continuity condition and the jump of a normal component are held on PML-domain interfaces.