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The feasibility of thermal inertia mapping for detection of perched water tables in semi-arid irrigated landsThe thermal inertia mapping remote sensing technique is evaluated as a potential method for delineating areas of shallow perched water tables and related salinization problems on a regional basis. This method for detecting shallow water tables is based on the existence of significant differences in soil thermal properties between wet and dry soil profiles. Ground observations were conducted at two different test sites in California along the flight line, with one site located in a perched water table area and the other site in a well drained area. Measurements were taken hourly during a four day period (two days before and two days after the flight) for variables such as radiometric, meteorologic, soil moisture and temperature profiles, and surface characteristics. Results indicate that it is not feasible using present apparent thermal inertia remote sensing techniques to reliably delineate regional patterns of very shallow water tables due to the complex environmental system. However, some features within specific fields which may be directly related to the local presence of shallow water tables, such as differences in evaporative cooling due to soil moisture effects between and within fields, can be detected using the thermal inertia technique.
Document ID
19830043365
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Ezra, C. E.
(California Univ. Santa Barbara, CA, United States)
Estes, J. E.
(California, University Santa Barbara, CA, United States)
Bonn, F.
(Sherbrooke, Universite Sherbrooke, Quebec, Canada)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: Remote sensing of arid and semi-arid lands; International Symposium on Remote Sensing of Environment
Location: Cairo
Country: Egypt
Start Date: January 19, 1982
End Date: January 25, 1982
Accession Number
83A24583
Funding Number(s)
CONTRACT_GRANT: NSG-7220-S2
Distribution Limits
Public
Copyright
Other

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