Lingering Frost
NASA/JPL/University of Arizona
Lingering Frost
ESP_053806_2650  Science Theme: Climate Change
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The North Polar layered deposits comprise a thick stack of icy layers. Part of this image has lingering seasonal frost, which serves to accentuate those layers.

An additional rationale for this observation is to document new activity in scarp erosion.

Written by: Alfred McEwen (audio: Tre Gibbs)  (25 June 2018)
 
Acquisition date
18 January 2018

Local Mars time
13:04

Latitude (centered)
85.111°

Longitude (East)
235.438°

Spacecraft altitude
318.6 km (198.0 miles)

Original image scale range
63.7 cm/pixel (with 2 x 2 binning) so objects ~191 cm across are resolved

Map projected scale
50 cm/pixel

Map projection
Polarstereographic

Emission angle
1.1°

Phase angle
62.2°

Solar incidence angle
63°, with the Sun about 27° above the horizon

Solar longitude
116.6°, Northern Summer

For non-map projected images
North azimuth:  123°
Sub-solar azimuth:  318.8°
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Merged IRB
map projected

Merged RGB
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RGB color
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IRB color
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JP2 EXTRAS
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map-projected  (101MB)
non-map           (95MB)

IRB color
map projected  (29MB)
non-map           (98MB)

Merged IRB
map projected  (219MB)

Merged RGB
map-projected  (195MB)

RGB color
non map           (83MB)
ADDITIONAL INFORMATION
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Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

USAGE POLICY
All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible:
NASA/JPL/University of Arizona

POSTSCRIPT
NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.