Determination of near surface geophyscial properties by impulsive displacement events
US9239220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2013 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | May 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/047
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is an improved technique for measuring near surface attributes of the ground while conducting a seismic survey. The improved technique is enabled by an electric vibe using a number of linear electric motors that direct a rod or piston to contact the ground in a recurring fashion. By applying constant force on the rods of the linear electric motors against the ground, the penetration into the ground may be measured for both rate and overall deformation. This information provides an accurate indication of viscosity and stiffness. In addition shear velocity and compression velocity may be measured and in some conditions, even the type of prominent shear wave may be identified for the area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.