Seepage and Evaporation Determination Using a Liquid Level Interferometer (Laser)

Persistent Link:
http://hdl.handle.net/10150/308907
Title:
Seepage and Evaporation Determination Using a Liquid Level Interferometer (Laser)
Author:
Cluff, C. Brent; Jacobs, Stephen F.; Neuberger, Steven; Tasso, Eric M.; Kartchner, Kevin K.
Affiliation:
Water Resources Research Center; Optical Sciences Center
Publisher:
University of Arizona (Tucson, AZ)
Issue Date:
1-Sep-1983
Description:
Research Project Technical Completion Report (A-109-Ariz.) For: United States Department of the Interior, Project Dates: 1981-1983, September 1, 1983. / The Research on which this project is based was financed in part by the U.S. Department of the Interior, as authorized by the Water Research and Development Act of 1978 (P.L. 95-467)
URI:
http://hdl.handle.net/10150/308907
Abstract:
A liquid level interferometer has been built to measure changes in water level to an accuracy of /8. A novel magnetic suspension is used to position the floating retroreflector of a laser interferometer. Direction sensing is achieved by dual optical channels phased near quadrature by means of an absorbing beamsplitter. The interferometer (laser) has been used to measure very accurately the drop in water level of a lined reservoir. The drop in water level thus provides a precise method of measuring evaporation. It was found that this drop in water level essentially ceased when the relative humidity approached very closely or equaled 100 percent during early morning calm periods. This provides a method of determination of seepage loss. In an unlined reservoir during calm periods when the relative humidity is 100 percent any remaining drop in water level is due to seepage. The laser can measure this rate.
Language:
en_US
Keywords:
Reservoirs.; Seepage.; Evaporation (Meteorology); Laser interferometers.

Full metadata record

DC FieldValue Language
dc.contributor.authorCluff, C. Brenten_US
dc.contributor.authorJacobs, Stephen F.en_US
dc.contributor.authorNeuberger, Stevenen_US
dc.contributor.authorTasso, Eric M.en_US
dc.contributor.authorKartchner, Kevin K.en_US
dc.date.accessioned2013-12-21T01:33:22Z-
dc.date.available2013-12-21T01:33:22Z-
dc.date.issued1983-09-01-
dc.identifier.urihttp://hdl.handle.net/10150/308907-
dc.descriptionResearch Project Technical Completion Report (A-109-Ariz.) For: United States Department of the Interior, Project Dates: 1981-1983, September 1, 1983. / The Research on which this project is based was financed in part by the U.S. Department of the Interior, as authorized by the Water Research and Development Act of 1978 (P.L. 95-467)en_US
dc.description.abstractA liquid level interferometer has been built to measure changes in water level to an accuracy of /8. A novel magnetic suspension is used to position the floating retroreflector of a laser interferometer. Direction sensing is achieved by dual optical channels phased near quadrature by means of an absorbing beamsplitter. The interferometer (laser) has been used to measure very accurately the drop in water level of a lined reservoir. The drop in water level thus provides a precise method of measuring evaporation. It was found that this drop in water level essentially ceased when the relative humidity approached very closely or equaled 100 percent during early morning calm periods. This provides a method of determination of seepage loss. In an unlined reservoir during calm periods when the relative humidity is 100 percent any remaining drop in water level is due to seepage. The laser can measure this rate.en_US
dc.language.isoen_USen_US
dc.publisherUniversity of Arizona (Tucson, AZ)en_US
dc.sourceWater Resources Research Center. The University of Arizona.en_US
dc.subjectReservoirs.en_US
dc.subjectSeepage.en_US
dc.subjectEvaporation (Meteorology)en_US
dc.subjectLaser interferometers.en_US
dc.titleSeepage and Evaporation Determination Using a Liquid Level Interferometer (Laser)en_US
dc.contributor.departmentWater Resources Research Centeren_US
dc.contributor.departmentOptical Sciences Centeren_US
dc.description.collectioninformationThis item is part of the Water Resources Research Center collection. It was digitized from a physical copy provided by the Water Resources Research Center at The University of Arizona. For more information about items in this collection, please contact the Center, (520) 621-9591 or see http://wrrc.arizona.edu.en_US
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