f 2.5D Acoustic full-wave frequency-domain inversion

Several approaches to frequency domain inversion and imaging have been developed over the last decade (e.g. Devaney, 1984; Pratt, 1989). These methods have typically been developed for 2D geometries and are accordingly limited by the implicit assumption of line sources. Song and Williamson(1992) presented a method of extending the work of Pratt(1989) to 2.5D, in which sources can be represented in 3D while medium properties vary in 2D. This in principle allows direct comparison of calculated and real data gathered in effectively 2D media.