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Snow Electromagnetic MeasurementsAn electromagnetic system is described for measuring the dielectric constant and attenuation of snow samples in the frequency range of 4 to 12 GHz. System components consists of a swept-frequency source, microwave horns, network analyzer, and XY plotter. The procedure for calibrating the effect of wetness on the snow properties is described. Equations are given that express the experimentally determined relation between attenuation per unit length and volume percent wetness at any frequency between 4 and 12 GHz. permittivity can be calculated from the snow density, attenuation per unit length, and frequency. Some applications of the techniques are described such as runoff forecasting from mountain snowpacks.
Document ID
19810010990
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Linlor, W. I. (NASA Ames Research Center Moffett Field, CA, United States)
Smith, J. L. (U.S. Forest Service Berkeley, Calif., United States)
Clapp, F. D. (California Univ. Berkeley, United States)
Angelakos, D. J. (California Univ. Berkeley, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Publication Information
Publication: NASA. Goddard Space Flight Center Microwave Remote Sensing of Snowpack Properties
Subject Category
Earth Resources And Remote Sensing
Accession Number
81N19517
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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