Wave equation angle domain common image gather asymptotic analysis

Autor:	Jean-Philippe Montel, Gilles Lambaré
Rok vydání:	2013
Předmět:	Asymptotic analysis Offset (computer science) Mathematical analysis Seismic migration Geometry Kinematics Curvature Wave equation Mathematics
Zdroj:	SEG Technical Program Expanded Abstracts 2013.
DOI:	10.1190/segam2013-0514.1
Popis:	Summary The increasing usage of wave equation and reverse time migration has motivated investigations on new types of common images gathers. Several types of angle domain common image gathers have then been proposed. While they should have the same aspect (up to specific artefacts) when the exact velocity model is used it appears that they exhibit significant differences in curvature when the velocity model is erroneous. This observation is analysed here by a theoretical analysis on ADCIGs computed by wave equation in the frame of high frequency asymptotics. This analysis is performed for slant stacked horizontal subsurface offset gather giving angle domain common image gathers and compared to previous results. We will put in evidence the differences between ADCIGs computed by other method and give the theoretical weapons to understand and deal correctly with the kinematic information contained in these gathers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e0ee74b10fd651ff5c76e97a3471572e https://doi.org/10.1190/segam2013-0514.1 Zobrazit plný text záznamu