Apparatus for inducing elliptically polarized shear waves in an earth medium
US4922472A · kind A · utility
4Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | May 31, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method for generation of elliptically polarized shear waves in an earth medium using two shear wave vibrators engaged to the earth medium in cross-polarized attitude and driven at sweep rates having variable phase displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.