A fast method for high-resolution velocity stack inversion

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Khas Ahmadi Sharyar; GHOLAMI ALI

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Journal Paper

Paper Information

Journal: JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS Year:2017 | Volume:2 | Issue:2 Page(s): 77-87

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Information Journal Paper

Title

A fast method for high-resolution velocity stack inversion

Author(s)

Khas Ahmadi Sharyar | GHOLAMI ALI | Issue Writer Certificate

Keywords

Velocity Analysis

Hyperbolic Radon Transform

Butterfly Algorithm

High Resolution

Sparsity

Abstract

The conventional Velocity Analysis sums the amplitudes of events along hyperbolic trajectories and converges the energy in the corresponding intercept time and slowness or velocity. This makes the Velocity Analysis as one of the most time consuming seismic data processing steps. On the other hand, this algorithm suffers from low resolution due to several reasons. In this paper, we use the Butterfly Algorithm to calculate the forward and adjoint operators of the Hyperbolic Radon Transform in a much faster way, compared to the conventional integration in the time domain. Moreover, by applying it to fast iterative shrinkage-thresholding algorithm (FISTA), a high-resolution velocity panel is obtained.

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