| Abstract: | The shallow shear-wave refraction method works successfully in an area with a series of horizontal layers. However, complex near-surface geology may not fit into the assumption of a series of horizontal layers. That a plane SH-wave undergoes wave-type conversion along an interface in an area of nonhorizontal layers is theoretically inevitable. One real example shows that the shallow shear-wave refraction method provides velocities of a converted wave rather than an SH- wave. Moreover, it is impossible to identify the converted wave by refraction data itself. As most geophysical engineering firms have limited resources, an additional P-wave refraction survey is necessary to verify if velocities calculated from a shear-wave refraction survey are velocities of converted waves. The alternative at this time may be the surface wave method, which can provide reliable S-wave velocities, even in an area of velocity inversion (a higher velocity layer underlain by a lower velocity layer). ?? 2002 Elsevier Science B.V. All rights reserved. |
| Genre: | Article |
| ProdID: | 70024460 |
| Citation Author: | Xia, J.; Miller, R. D.; Park, C. B.; Wightman, E.; Nigbor, R. |
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| Citation End Page: | 9 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Applied Geophysics |
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| Citation Number Of Pages: | 9 |
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| Citation Search Results Text: | A pitfall in shallow shear-wave refraction surveying; 2002; Article; Journal; Journal of Applied Geophysics; Xia, J.; Miller, R. D.; Park, C. B.; Wightman, E.; Nigbor, R. |
| Citation Start Page: | 1 |
| Citation Volume: | 51 |
| Citation Year: | 2002 |
| Type: | citation/reference |
| Text: | A pitfall in shallow shear-wave refraction surveying; 2002; Article; Journal; Journal of Applied Geophysics; Xia, J.; Miller, R. D.; Park, C. B.; Wightman, E.; Nigbor, R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/S0926-9851(02)00197-0 |
| Date Other: | Tue, 1 Jan 2002 00:00 -0600 |
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