Global seismic tomography with sparsity constraints: Comparison with smoothing and damping regularization

We present a realistic application of an inversion scheme for global seismic tomography that uses as prior information the sparsity of a solution, defined as having few nonzero coefficients under the action of a linear transformation. In this paper, the sparsifying transform is a wavelet transform....

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Bibliographic Details

Published in:	Journal of Geophysical Research Solid Earth
Main Author:	Jean Charléty
Other Authors:	Sergey Voronin, Guust Nolet, Ignace Loris, Frederik J. Simons, Karin Sigloch, Ingrid C. Daubechies
Format:	Article
Language:	English
Published:	Wiley 2013
Subjects:	Seismic Imaging and Inversion Techniques Seismic Waves and Analysis Numerical methods in inverse problems global seismic tomography sparsity constraints wavelet transform iterative soft thresholding regularization finite-frequency tomography time delay USArray edge preservation
Online Access:	https://doi.org/10.1002/jgrb.50326
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