Single frequency 2D acoustic full waveform inversion

Single frequency 2D acoustic full waveform inversion

Sjoerd de Ridder, Ali Almomin, and Musa Maharramov

Abstract:

Single frequency 2D acoustic full waveform inversion shows promise as an approach to inverting the acoustic, dispersive 2D acoustic wave equation for the underlying velocity cube as a function of frequency. A GPU friendly finite difference time domain kernel and an associated frequency domain optimization scheme are shown to retrieve a Gaussian anomaly via full waveform inversion for several acquisition geometries. Although the wave field is single frequency, the spatial distance of sources and receivers allows their sensitivity kernels to interfere and form a gradient that can recover the anomaly.