Frequency dependent qP-Lomax rays in three-dimensional weak TTI media
https://doi.org/10.18303/2619-1563-2024-2-40
Abstract
A simple and numerically effective approach for calculating frequency dependent qP-rays in threedimensional TTI media is presented in this paper. Our method involves propagating a locally plane fragment of wavefront which is sensitive to the distribution of the model parameters in some subvolume of the medium near a ray. The width of the sensitivity area depends on the wavelength in each point on the ray. For numerical realization we apply approximate expressions for phase and group velocities which are valid for weak TTI media. Numerical experiment proves the effectiveness of the proposed approach
Supporting agencies: M.I. Protasov developed a frequency-dependent qP-ray tracing algorithm within the framework of the FWZZ-2022-0022 research project. D.A. Neklyudov implemented the algorithm for constructing qP frequency-dependent rays and numerically studied it on the realistic models for its applicability to seismic problems with the support of the Russian Science Foundation (grant No. 21-71-20002).The results of the work were obtained using the computing resources of the Supercomputer Center of Peter the Great St. Petersburg Polytechnic University (scc.spbstu.ru).
About the Authors
D. A. Neklyudov
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
M. I. Protasov
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS
Russian Federation
Russian Federation
Koptyug Ave., 3, Novosibirsk, 630090
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Review
For citations:
Neklyudov D.A., Protasov M.I. Frequency dependent qP-Lomax rays in three-dimensional weak TTI media. Russian Journal of Geophysical Technologies. 2024;(2):40-54. (In Russ.) https://doi.org/10.18303/2619-1563-2024-2-40
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