Common-reflection-surface method in weakly anisotropic vertical transverse isotropic media
| Autor: | Tiago A. Coimbra, Rodrigo Bloot, Jorge H. Faccipieri, Martin Tygel |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Surface (mathematics)
Physics 010504 meteorology & atmospheric sciences Wave propagation Isotropy Geometry Context (language use) Kinematics 010502 geochemistry & geophysics 01 natural sciences Transverse plane Geophysics Geochemistry and Petrology Reflection (physics) Anisotropy 0105 earth and related environmental sciences |
| Zdroj: | GEOPHYSICS. 83:C99-C113 |
| ISSN: | 1942-2156 0016-8033 |
| DOI: | 10.1190/geo2017-0368.1 |
| Popis: | The extraction of kinematic parameters from wave propagation through traveltimes is one of the great challenges in seismic data processing. In this context, we modify the common-reflection-surface (CRS) traveltime to improve its accuracy and also interpret its parameters via paraxial ray theory in an anisotropic medium obtaining information about the wavefront curvatures measured at surface. The proposed method consists of searching for the best stacking parameters that fit the data set followed by the extraction of kinematic information from the measured waves. Numerical tests show the effectiveness of our assumptions and that the results obtained in the fitting and parameter extraction in anisotropic media achieve better accuracy than conventional CRS. |
| Databáze: | OpenAIRE |
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