RBF-FD analysis of 2D time-domain acoustic wave propagation in heterogeneous media
arXiv:2001.01597 · doi:10.1016/j.cageo.2021.104796
Abstract
Radial Basis Function-generated Finite Differences (RBF-FD) is a popular variant of local strong-form meshless methods that do not require a predefined connection between the nodes, making it easier to adapt node-distribution to the problem under consideration. This paper investigates an RBF-FD solution of time-domain acoustic wave propagation in the context of seismic modeling in the Earth's subsurface. Through a number of numerical tests, ranging from homogeneous to highly-heterogeneous velocity models including non-smooth irregular topography, we demonstrate that the present approach can be further generalized to solve large-scale seismic modeling and full waveform inversion problems in arbitrarily complex models enabling more robust interpretations of geophysical observations
To reproduce the numerical tests in this paper, please see the project repository \url{https://gitlab.com/e62Lab/2019_p_wavepropagation_code}