Author:
Protasov Maxim,Gadylshin Kirill,Neklyudov Dmitry,Klimes Ludek
Abstract
This study considers the full waveform inversion (FWI) method based on the asymptotic solution of the Helmholtz equation. We provide frequency-dependent ray tracing to obtain the wave field used to compute the FWI gradient and calculate the modeled data. With a comparable quality of the inverse problem solution as applied to the standard finite difference approach, the speed of the calculations in the asymptotic method is an order of magnitude higher. A series of numerical experiments demonstrate the approach’s effectiveness in reconstructing the macro velocity structure of complex media for low frequencies.
Funder
Russian Foundation of Basic Research
Czech Science Foundation
Subject
General Earth and Planetary Sciences
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