Approximate inversion of the wave-equation Hessian via randomized matrix probing

We present a method for approximately inverting the Hessian of full waveform inversion as a dip-dependent and scale-dependent amplitude correction. The terms in the expansion of this correction are determined by least-squares fitting from a handful of applications of the Hessian to random models — a...

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Bibliographic Details
Main Authors: Letourneau, Pierre-David, Demanet, Laurent, Calandra, Henri
Other Authors: Massachusetts Institute of Technology. Earth Resources Laboratory
Format: Technical Report
Language:en_US
Published: Massachusetts Institute of Technology. Earth Resources Laboratory 2014
Subjects:
Online Access:http://hdl.handle.net/1721.1/90470