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Research note: derivations of gradients in angle‐independent joint migration inversion
Author(s) -
Sun Yimin,
Verschuur Eric,
Qu Shan
Publication year - 2019
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/1365-2478.12738
Subject(s) - inversion (geology) , geology , joint (building) , reflectivity , economic geology , regional geology , geophysics , geometry , geodesy , metamorphic petrology , optics , hydrogeology , seismology , physics , mathematics , geotechnical engineering , tectonics , architectural engineering , engineering
Although joint migration inversion has been proposed for several years, a thorough derivation and description of the involved gradients was not published. In this paper, we derive the gradient of both the angle‐independent reflectivity and the velocity in a framework of acoustic angle‐independent joint migration inversion. With some further approximations taken, the conclusions shown in previous publications can also be reached from our new derivation.