Related papers: Physics-Consistent Data-driven Waveform Inversion with Adaptive Data Augmentation

Physics-Consistent Data-driven Waveform Inversion with Adaptive Data Augmentation

URL: http://arxiv.org/abs/2009.01807v1
Date: Thu, 3 Sep 2020 17:12:55 GMT
Title: Physics-Consistent Data-driven Waveform Inversion with Adaptive Data Augmentation
Authors: Ren\'an Rojas-G\'omez, Jihyun Yang, Youzuo Lin, James Theiler, Brendt Wohlberg
Abstract summary: We develop a new hybrid computational approach to solve full-waveform inversion (FWI) We develop a data augmentation strategy that can improve the representativity of the training set. We apply our method to synthetic elastic seismic waveform data generated from a subsurface geologic model built on a carbon sequestration site at Kimberlina, California.
Score: 12.564534712461331
License: http://creativecommons.org/publicdomain/zero/1.0/
Abstract: Seismic full-waveform inversion (FWI) is a nonlinear computational imaging technique that can provide detailed estimates of subsurface geophysical properties. Solving the FWI problem can be challenging due to its ill-posedness and high computational cost. In this work, we develop a new hybrid computational approach to solve FWI that combines physics-based models with data-driven methodologies. In particular, we develop a data augmentation strategy that can not only improve the representativity of the training set but also incorporate important governing physics into the training process and therefore improve the inversion accuracy. To validate the performance, we apply our method to synthetic elastic seismic waveform data generated from a subsurface geologic model built on a carbon sequestration site at Kimberlina, California. We compare our physics-consistent data-driven inversion method to both purely physics-based and purely data-driven approaches and observe that our method yields higher accuracy and greater generalization ability.