Active Gullies in Crater Dune Field, Southern Polar Region
NASA/JPL/UArizona
Active Gullies in Crater Dune Field, Southern Polar Region
ESP_022255_1095  Science Theme: Seasonal Processes
These dune gullies are located in an unnamed crater just north of the Richardson Crater, which also contain dune gullies.

HiRISE is monitoring the seasonal activity of gullies in this location and in other dune fields in the southern midlatitudes and northern polar region.



Written by: HiRISE Science Team  (29 June 2011)
 
Acquisition date
26 April 2011

Local Mars time
15:05

Latitude (centered)
-70.334°

Longitude (East)
178.198°

Spacecraft altitude
247.9 km (154.1 miles)

Original image scale range
24.9 cm/pixel (with 1 x 1 binning) so objects ~75 cm across are resolved

Map projected scale
25 cm/pixel

Map projection
Polarstereographic

Emission angle
3.2°

Phase angle
50.7°

Solar incidence angle
53°, with the Sun about 37° above the horizon

Solar longitude
281.4°, Northern Winter

For non-map projected images
North azimuth:  100°
Sub-solar azimuth:  42.8°
JPEG
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

JP2
Black and white
map-projected   (670MB)

IRB color
map-projected   (282MB)

JP2 EXTRAS
Black and white
map-projected  (314MB)
non-map           (438MB)

IRB color
map projected  (126MB)
non-map           (359MB)

Merged IRB
map projected  (152MB)

Merged RGB
map-projected  (146MB)

RGB color
non map           (368MB)
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.