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Research note: derivations of gradients in angle‐independent joint migration inversion
- Source: Geophysical Prospecting, Volume 67, Issue 3, Mar 2019, p. 572 - 579
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- 28 May 2018
- 20 Dec 2018
- 22 Feb 2019
Abstract
ABSTRACT
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.
© 2019 European Association of Geoscientists & Engineers © 2019 European Association of Geoscientists & Engineers