Hessian-based multiparameter fractional viscoacoustic full-waveform inversion

Conference · Wed Sep 30 00:00:00 EDT 2020 · SEG Technical Program Expanded Abstracts 2020

DOI:https://doi.org/10.1190/segam2020-3426699.1· OSTI ID:1829722

Xing, Guangchi ^[1]; Zhu, Tieyuan ^[1]

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1. Pennsylvania State University

Recent progress on fractional modeling enables incorporating seismic attenuation into wavefield simulation in an accurate and efficient way. But its inverse problem, i.e., the multiparameter viscoacoustic full waveform inversion (FWI), still suffers from various issues, especially the crosstalk between velocity and attenuation. In this study, we integrate the Hessian information via the Newton-CG framework and develop the multiparameter fractional viscoacoustic FWI algorithm. It significantly mitigates the crosstalk problems and sheds light upon simultaneous inversion for both velocity and Q models.

• Research Organization: Pennsylvania State Univ., University Park, PA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FE0031544
• OSTI ID: 1829722
• Journal Information: SEG Technical Program Expanded Abstracts 2020, Conference: SEG, Houston, Oct 2020
• Country of Publication: United States
• Language: English