- Press Release
- Nov 30, 2022
NASA Mars Odyssey THEMIS Image: Ice Surfaces In False Color
Context image credit: NASA/Mars Orbiter Laser Altimeter (MOLA) Team
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The theme for the weeks of 1/17 and 1/24 is the north polar region
of Mars as seen in false color THEMIS images. Ice/frost will typically
appear as bright blue in color; dust mantled ice will appear in
tones of red/orange.
This full resolution image shows a marked difference in
the “blueness” of the ice surfaces. The lower (presumably
older) surface is oranger and the top (presumably younger)
surface is blue. This may represent the fresher ice of the
upper surface which has not yet covered with as much dust
as the lower surface.
[Source: ASU THEMIS Science Team]
Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.
Image Credit: NASA/JPL/Arizona State University
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