Open AccessA 2‐D, ray‐based, depth migration method for deep seismic reflections
Author(s) -
Raynaud Bernard
Publication year - 1988
Publication title -
geophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0952-4592
DOI - 10.1111/j.1365-246x.1988.tb01395.x
Subject(s) - reflection (computer programming) , seismic migration , geology , seismology , noisy data , profiling (computer programming) , line (geometry) , algorithm , geometry , geodesy , computer science , mathematics , programming language , operating system
SUMMARY Although accurate depth‐migration is essential for the correct geometrical interpretation of deep reflection data, migration by the standard numerical methods has generally not been satisfactory. The alternative method presented in this paper provides an efficient migration for deep reflection profiles in the form of a digitized line‐drawing assuming a general, 2‐D velocity structure. Migration of a digitized line‐drawing reduces the effects of low signal/noise ratios. The calculation is rapid allowing migrations to be calculated for a large number of alternative velocity structures and iterative improvement of the velocity structure. The migration has been applied to 3‐D structures observed on intersecting profiles collected by BIRPS (British Institutes Reflection Profiling Syndicate).