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Advances in Tensiometry for Long-term Monitoring of Soil Water Pressures

^a Geosciences Research Department, Idaho National Engineering and Environmental Laboratory, Bechtel Idaho, Incorporated, Idaho Falls, ID 83415
^b Hydrology Group, Environmental Technology Division, Pacific Northwest National Laboratory, Richland, WA 99352
^c Applied Research Associates, Inc., Richland, WA 99352
^d Desert Research Institute, Reno, NV 89512

View larger version (50K): [in a new window]   Fig. 1. Schematic of lysimeters used for water-budget monitoring at the Hanford Site.

View larger version (21K): [in a new window]   Fig. 2. Advanced tensiometers (ATs) deployed by hollow stem-auger technique.

View larger version (43K): [in a new window]   Fig. 3. Drive-cone tensiometers (DCTs) deployed by cone-penetrometer technique.

View larger version (27K): [in a new window]   Fig. 4. Time response of advanced tensiometers (ATs) deployed by hollow stem-auger technique.

View larger version (16K): [in a new window]   Fig. 5. Total head vs. depth for three time periods during testing.

View larger version (15K): [in a new window]   Fig. 6. Time response of drive-cone tensiometers (DCTs) deployed by cone penetrometer.