Down in Chukhung Crater
NASA/JPL/University of Arizona
Down in Chukhung Crater
ESP_060953_2185  Science Theme: Glacial/Periglacial Processes
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Chukhung is a 45 kilometer-diameter, central pit crater in Tempe Terra, having likely formed 3 billion years ago. The southern portion of the crater floor hosts a large viscous flow feature that is hypothesized to be a glacier.

There are sinuous ridges that emanate from the margin of the flow feature toward the center of the crater. These ridges could be evidence of glacial meltwater preserved in the form of eskers, inverted channels formed when the softer sediments surrounding the channel deposits are eroded away. It is unclear whether the conditions for wet-based glaciation ever existed on Mars, but these ridges could be evidence that it once did.

Written by: Dan Berman (narration: Tre Gibbs)  (14 October 2019)

This is a stereo pair with ESP_060676_2185.
 
Acquisition date
28 July 2019

Local Mars time
14:47

Latitude (centered)
38.364°

Longitude (East)
287.637°

Spacecraft altitude
292.0 km (181.5 miles)

Original image scale range
29.2 cm/pixel (with 1 x 1 binning) so objects ~88 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
0.6°

Phase angle
39.3°

Solar incidence angle
40°, with the Sun about 50° above the horizon

Solar longitude
58.9°, Northern Spring

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  353.0°
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map-projected  (339MB)
non-map           (317MB)

IRB color
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non-map           (260MB)

Merged IRB
map projected  (196MB)

Merged RGB
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RGB color
non map           (259MB)
ANAGLYPHS
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Full resolution JP2 download
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ADDITIONAL INFORMATION
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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.