The airborne infrared scanner as a geophysical research tool

Optical Spectra


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The infrared scanner is proving to be an effective anomaly-mapping tool, albeit one which depicts surface emission directly and heat mass transfer from depths only indirectly and at a threshold level 50 to 100 times the normal conductive heat flow of the earth. Moreover, successive terrain observations are affected by time-dependent variables such as the diurnal and seasonal warming and cooling cycle of a point on the earth's surface. In planning precise air borne surveys of radiant flux from the earth's surface, account must be taken of background noise created by variations in micrometeorological factors and emissivity of surface materials, as well as the diurnal temperature cycle. The effect of the diurnal cycle may be minimized by planning predawn aerial surveys. In fact, the diurnal change is very small for most water bodies and the emissivity factor for water (e) =~ 1 so a minimum background noise is characteristic of scanner records of calm water surfaces.

Publication type Article
Publication Subtype Journal Article
Title The airborne infrared scanner as a geophysical research tool
Series title Optical Spectra
Volume 4
Issue 6
Year Published 1970
Language English
Publisher Optical Pub. Co.
Publisher location Pittsfield, MA
Contributing office(s) Earth Resources Observation and Science (EROS) Center
Description 10 p.
First page 35
Last page 44
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