Monitoring probe for groundwater flow

Details Monitoring probe for groundwater flow Monitoring probe for groundwater flow

1993-05-25

1994-08-23

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

By measuring tracer concentration

7386108, 7317011, G01F 156

Patent

active

053396944

ABSTRACT:
A monitoring probe for detecting groundwater migration. The monitor features a cylinder made of a permeable membrane carrying an array of electrical conductivity sensors on its outer surface. The cylinder is filled with a fluid that has a conductivity different than the groundwater. The probe is placed in the ground at an area of interest to be monitored. The fluid, typically saltwater, diffuses through the permeable membrane into the groundwater. The flow of groundwater passing around the permeable membrane walls of the cylinder carries the conductive fluid in the same general direction and distorts the conductivity field measured by the sensors. The degree of distortion from top to bottom and around the probe is precisely related to the vertical and horizontal flow rates, respectively. The electrical conductivities measured by the sensors about the outer surface of the probe are analyzed to determine the rate and direction of the groundwater flow.

REFERENCES:
patent: 3722276 (1973-03-01), Chandler et al.
patent: 4166215 (1979-08-01), Anderson
patent: 4391137 (1983-07-01), Kerfoot et al.
patent: 4570492 (1986-02-01), Walsh
patent: 4702801 (1987-10-01), Gyokhegyi
patent: 4963019 (1990-10-01), Foster et al.

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