RBF-FD analysis of 2D time-domain acoustic wave propagation in heterogeneous media

Radial Basis Function-generated Finite Differences (RBF-FD) is a popular variant of local strong-form meshless methods that do not require predefined connection between the nodes, making it easier to adapt node-distribution problem under consideration. This paper investigates an RBF-FD solution time-domain acoustic wave propagation in context seismic modeling Earth's subsurface. Through number numerical tests, ranging from homogeneous highly-heterogeneous velocity models including non-smooth irregular topography, we demonstrate present approach can be further generalized solve large-scale and full waveform inversion problems arbitrarily complex enabling more robust interpretations geophysical observations