Rayleigh-wave dispersive energy imaging using a high-resolution linear radon transform
Pure and Applied Geophysics
By: Y. Luo, J. Xia, R. D. Miller, Y. Xu, J. Liu, and Q. Liu
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Abstract
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 type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Rayleigh-wave dispersive energy imaging using a high-resolution linear radon transform |
| Series title | Pure and Applied Geophysics |
| DOI | 10.1007/s00024-008-0338-4 |
| Volume | 165 |
| Issue | 5 |
| Year Published | 2008 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Pure and Applied Geophysics |
| First page | 903 |
| Last page | 922 |
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