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Directional variations in thermal emission from geologic surfacesThe directional emission properties of geologic surfaces were investigated using a ground-based, hand-held infrared radiometer and thermistor probe. Field sites involved surfaces ranging from smooth playa and sand surfaces to a very rough aa lava flow. Large directional variations in thermal emission were found; they result from the presence of surface roughness at large scales producing spatial variations in kinetic temperature and at small scales producing emissivity variations. These variations are important in remotely determining surface structure and understanding surface energy balance and emission spectra.
Document ID
19900051284
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jakosky, Bruce M.
(Colorado Univ. Boulder, CO, United States)
Finiol, Gary W.
(Colorado Univ. Boulder, CO, United States)
Henderson, Bradley G.
(Colorado, University Boulder, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1990
Publication Information
Publication: Geophysical Research Letters
Volume: 17
ISSN: 0094-8276
Subject Category
Lunar And Planetary Exploration
Accession Number
90A38339
Distribution Limits
Public
Copyright
Other

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