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Freshwater ice thickness observations using passive microwave sensorsWalden Reservoir, a freshwater lake in north-central Colorado, was overflown six times by a NASA C-130 aircraft between January 1977 and April 1980. The aircraft was equipped with four microwave radiometers operating between 0.81 and 6.0 cm in wavelength (37.0 to 5.0 GHz). The 6.0-cm radiometer data showed a good relationship with ice thickness based on a sample of four ice thickness values. The 1.67- and 1.35-cm radiometer data showed weaker relationships with ice thickness. The 0.81-cm sensor data showed no positive relationship with ice thickness. None of the relationships was statistically significant because of the small sample size. The 6.0-cm sensor data in the nadir-viewing mode was found to have the most potential of all the wavelengths studied, for use in remotely determining ice thickness. The 6.0-cm radiometer probably sensed the entire thickness of the ice on the reservoir (ranging from 25.4 to 67.3 cm in thickness) and was apparently not significantly affected by the snow overlying the ice. The shorter wavelengths are scattered by the snow overlying the ice and are more suitable for snow studies than for ice thickness studies.
Document ID
19810065564
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hall, D. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Foster, J. L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chang, A. T. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rango, A.
(NASA Goddard Space Flight Center Hydrological Sciences Branch, Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
October 1, 1981
Publication Information
Publication: IEEE Transactions on Geoscience and Remote Sensing
Volume: GE-19
Subject Category
Earth Resources And Remote Sensing
Accession Number
81A49968
Distribution Limits
Public
Copyright
Other

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