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Rayleigh-wave dispersive energy imaging using a high-resolution linear radon transform

January 1, 2008

Multichannel Analysis of Surface Waves (MASW) analysis is an efficient tool to obtain the vertical shear-wave profile. One of the key steps in the MASW method is to generate an image of dispersive energy in the frequency-velocity domain, so dispersion curves can be determined by picking peaks of dispersion energy. In this paper, we propose to image Rayleigh-wave dispersive energy by high-resolution linear Radon transform (LRT). The shot gather is first transformed along the time direction to the frequency domain and then the Rayleigh-wave dispersive energy can be imaged by high-resolution LRT using a weighted preconditioned conjugate gradient algorithm. Synthetic data with a set of linear events are presented to show the process of generating dispersive energy. Results of synthetic and real-world examples demonstrate that, compared with the slant stacking algorithm, high-resolution LRT can improve the resolution of images of dispersion energy by more than 50%. ?? Birkhaueser 2008.

Publication Year 2008
Title Rayleigh-wave dispersive energy imaging using a high-resolution linear radon transform
DOI 10.1007/s00024-008-0338-4
Authors Y. Luo, J. Xia, R. D. Miller, Y. Xu, J. Liu, Q. Liu
Publication Type Article
Publication Subtype Journal Article
Series Title Pure and Applied Geophysics
Index ID 70032092
Record Source USGS Publications Warehouse
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