Reweighting strategies in seismic deconvolution |
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| Authors: | Mauricio D Sacchi |
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| Institution: | Department of Earth and Ocean Sciences, The University of British Columbia, 2219 Main Mall, Vancouver, BC, Canada, V6T 1Z4. E-mail: sacchi@geop.ubc.ca |
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| Abstract: | Reweighting strategies have been widely used to diminish the influence of outliers in inverse problems. In a similar fashion, they can be used to design the regularization term that must be incorporated to solve an inverse problem successfully. Zero-order quadratic regularization, or damped least squares (pre-whitening) is a common procedure used to regularize the deconvolution problem. This procedure entails the definition of a constant damping term which is used to control the roughness of the deconvolved trace. In this paper I examine two different regularization criteria that lead to an algorithm where the damping term is adapted to successfully retrieve a broad-band reflectivity.
Synthetic and field data examples are used to illustrate the ability of the algorithm to deconvolve seismic traces. |
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| Keywords: | broadband Green's functions inversion numerical techniques seismic reflection seismograms |
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