Finite-difference modeling of the wavefield on the seismometry observations on NW Black Sea shelf

• Published in: Геологія і корисні копалини Світового океану Vol. 18; no. 3; pp. 27 - 39
• Main Authors: VERPAKHOVSKA, O.O., KOBOLEV, V.P., PYLYPENKO, V.M.
• Format: Journal Article
• Language: English
• Published: Publisher House Akademperiodyka 01.09.2022
• Subjects: black sea shelf; cdp-reflection data; finite-difference post-stack migration; seismic exploration
• ISSN: 1999-7566; 2664-5947
• DOI: 10.15407/gpimo2022.03.027

In current seismic studies, special attention is given to the correctness of both the processing methods and the results of their using. In particularly, this applies to the migration procedure, which allows reproducing the deep structure of the research area directly from the observed wave field. In the Institute of Geophysics named after SI. Subbotin of the National Academy of Sciences of Ukraine, for many years, methods of migration and modeling of the wave field, which are theoretically based on the finite-difference method of solving differential equations, have been developed. Modeling the wave field makes it possible to identify useful waves in the real observed seismic field for the effective formation of a migration image of the geological environment and to confirm the correctness and accuracy of the reproduction of various types of disturbances on it. S.I. Subbotin Institute of geophysics of the National Academy of Sciences of Ukraine in 2013 on the continental slope of the northwestern part of the Black Sea, seismometry observations with reflection CDP (Common Deep Point) profiles were carried out. When processing the registered wave fields to form a depth image of the geological section, post-stack full-wave finite-difference migration was used. As a tool for assessing the correctness of the obtained results, the finite-difference modeling of the wave field is considered, which is based on the solution of the wave equation on a grid with a seven-point pattern.