Results from the geoacoustic inversion techniques workshop using modal inverse methods
Additional Document Info
This paper presents the results of a perturbative inverse approach applied to the range-dependent acoustic data provided as part of the Geoacoustic Inversion Techniques Workshop. The method is based on the Hankel transform relationship between complex-pressure field data measured on a horizontal array and the depth-dependent Green’s function for a horizontally stratified medium. The input data to the inversion algorithm are discrete values of horizontal wavenumbers; estimated for locally range-independent subapertures of the acoustic data. Inversion results are presented with emphasis placed on inverting for compressional wave speed as a function of both range and depth in the bottom.