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Geological applications of Nimbus radiation data in the Middle EastLarge plateaus of Eocene limestone and exposed limestone escarpments, in Egypt and Saudi Arabia, respectively, were indicated by cool brightness temperatures recorded by the Nimbus-5 electrically scanning microwave radiometer (ESMR), over a 2-year period. Nubian sandstone, desert eolian sand, and igneous-metamorphic rock of the Pliocene, Miocene, Oligocene, and Cretaceous periods were differentiated from these limestone areas by warm T sub B values. These brightness temperature differences are a result of seasonal in-situ ground temperatures and differential emissivity of limestone and sand, sandstone and granite, whose dielectric constants are 6 to 8.9 and 2.9 and 4.2 to 5.3, respectively, at 19.35 GHz.
Document ID
19770015640
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Allison, L. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1977
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-TN-D-8469
G-7702-F6
Accession Number
77N22584
Funding Number(s)
PROJECT: RTOP 175-50-40
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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