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Attenuation Sensitivity Kernel Calculation in Anelastic Wave Equation Tomography
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 83rd EAGE Annual Conference & Exhibition Workshop Programme, Jun 2022, Volume 2022, p.1 - 5
Abstract
Imaging the subsurface attenuation models using wave equation based tomography methods is an important and challenging task. The forward modeling of wave propagation in anelastic media can be considered as solved based on superposition of rheological bodies with the generalized standard linear solid model. However, in previous literature, different approaches are employed to calculate the attenuation sensitivity kernels, which are essentially important for anelastic wave equation tomography. This study examines different theoretical frameworks for constructing the attenuation sensitivity kernels. In the numerical examples, these methods are used to calculate the anelastic sensitivity kernels for comparison. We have found that in the presence of velocity errors, the attenuation sensitivity kernels calculated with memory strain variables can resolve the attenuation anomalies better suffering from fewer trade-off artifacts.