Experimental Results for Colloidal Borescope Flowmeter
Description
The colloidal borescope flowmeter (HB) used in this testing was developed by AquaVISION, Llc. The instrument employs a charge-coupled device camera, an optical magnification lens (140x), and a light-emitting diode (LED) illumination source to visually track neutrally buoyant colloids (approximately 1-5 microns) moving horizontally through the borehole. The device measured groundwater velocity and flow direction in the x-y (horizontal) plane. The HB magnetometer was checked with a compass to assure proper instrument orientation before deployment into the simulators. Borescope data were collected for each flow condition for a period of at least 30 minutes. After data collection, borescope data were inspected for anomalous periods of record that were caused by disturbances such as a vibration in the laboratory. Anomalous periods were deleted before computing the velocity and flow direction.
Resources
| Name |
Format |
Description |
Link |
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55 |
Landing page for access to the data |
https://doi.org/10.5066/P9IF9JH8 |
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55 |
The metadata original format |
https://data.usgs.gov/datacatalog/metadata/USGS.5cc215ade4b09b8c0b74717b.xml |
Tags
- usgs-hydrologic-instrumentation-facility
- fracture-geologic
- groundwater-flow
- hydrologic-processes
- laboratory-experiments
- usgs-ohio-kentucky-indiana-water-science-center
- geoscientificinformation
- groundwater-movement
- usgs-5cc215ade4b09b8c0b74717b