Gullies of Matara Crater
NASA/JPL/University of Arizona
Gullies of Matara Crater
ESP_054026_1300  Science Theme: Mass Wasting Processes
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Gullies on Martian sand dunes, like these in Matara Crater, have been very active, with many flows in the last ten years. The flows typically occur when seasonal frost is present.

Here, we see frost in and around two gullies, which have both been active before. (View this observation to see what these gullies looked like in 2010.) There are no fresh flows so far this year, but HiRISE will keep watching!

Written by: Colin Dundas (audio: Tre Gibbs)  (2 April 2018)
 
Acquisition date
04 February 2018

Local Mars time:
15:27

Latitude (centered)
-49.465°

Longitude (East)
34.724°

Spacecraft altitude
251.4 km (157.1 miles)

Original image scale range
50.3 cm/pixel (with 2 x 2 binning) so objects ~151 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
1.4°

Phase angle:
84.9°

Solar incidence angle
84°, with the Sun about 6° above the horizon

Solar longitude
124.6°, Northern Summer

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  48.6°
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IRB color
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Merged IRB
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Merged RGB
map projected

RGB color
non-map projected

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map-projected   (78MB)

IRB color
map-projected   (106MB)

JP2 EXTRAS
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map-projected  (43MB)
non-map           (42MB)

IRB color
map projected  (34MB)
non-map           (91MB)

Merged IRB
map projected  (70MB)

Merged RGB
map-projected  (77MB)

RGB color
non map           (76MB)
ADDITIONAL INFORMATION
B&W label
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.