Method to improve spatial sampling of vertical motion of seismic wavefields on the water bottom by utilizing horizontal rotational motion and vertical motion sensors
US9664806B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Oct 24, 2011 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Aug 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for spatial sampling of a seismic wavefield at the bottom of a water layer at an effective spatial sampling denser than the physical layout of the sensors. The sensors comprise a sensing element for vertical particle motion and a sensing element for rotational motion around a horizontal axis. Stress and wavefield conditions allow the rotational sensing element to yield the transverse horizontal gradient of the vertical particle motion wavefield, used in ordinate and slope sampling to yield improved transverse spatial sampling of the vertical particle motion wavefield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.