| Abstract: | Joint inversion of multimode surface waves for estimating the shear (S)-wave velocity has received much attention in recent years. In this paper, we first analyze sensitivity of phase velocities of multimodes of surface waves for a six-layer earth model, and then we invert surface-wave dispersion curves of the theoretical model and a real-world example. Sensitivity analysis shows that fundamental mode data are more sensitive to the S-wave velocities of shallow layers and are concentrated on a very narrow frequency band, while higher mode data are more sensitive to the parameters of relatively deeper layers and are distributed over a wider frequency band. These properties provide a foundation of using a multimode joint inversion to define S-wave velocities. Inversion results of both synthetic data and a real-world example demonstrate that joint inversion with the damped least-square method and the singular-value decomposition technique to invert high-frequency surface waves with fundamental and higher mode data simultaneously can effectively reduce the ambiguity and improve the accuracy of S-wave velocities. ?? 2007. |
| Genre: | Article |
| ProdID: | 70030724 |
| Citation Author: | Luo, Y.; Xia, J.; Liu, J.; Liu, Q.; Xu, S. |
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| Citation End Page: | 384 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Applied Geophysics |
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| Citation Number Of Pages: | 10 |
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| Citation Search Results Text: | Joint inversion of high-frequency surface waves with fundamental and higher modes; 2007; Article; Journal; Journal of Applied Geophysics; Luo, Y.; Xia, J.; Liu, J.; Liu, Q.; Xu, S. |
| Citation Start Page: | 375 |
| Citation Volume: | 62 |
| Citation Year: | 2007 |
| Type: | citation/reference |
| Text: | Joint inversion of high-frequency surface waves with fundamental and higher modes; 2007; Article; Journal; Journal of Applied Geophysics; Luo, Y.; Xia, J.; Liu, J.; Liu, Q.; Xu, S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/j.jappgeo.2007.02.004 |
| Date Other: | Mon, 1 Jan 2007 00:00 -0600 |
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