Avire Crater Seasonal Monitoring
Avire Crater Seasonal Monitoring
ESP_023322_1390  Science Theme: Seasonal Processes
This crater shows prominent gullies on it walls. The origin of gullies is controversial, but many, and probably those here, seem to require carbon dioxide or water frost that may fluidize debris flows,or possibly water in an ephemeral (short term) stability state that erodes the surface.

This region is being continually monitored by HiRISE to note any changes.

Written by: HiRISE Science Team  (31 August 2011)
Acquisition date
18 July 2011

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
254.5 km (158.2 miles)

Original image scale range
50.9 cm/pixel (with 2 x 2 binning) so objects ~153 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
41°, with the Sun about 49° above the horizon

Solar longitude
330.2°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  40.2°
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

Black and white
map-projected   (143MB)

IRB color
map-projected   (71MB)

Black and white
map-projected  (59MB)
non-map           (91MB)

IRB color
map projected  (19MB)
non-map           (67MB)

Merged IRB
map projected  (135MB)

Merged RGB
map-projected  (131MB)

RGB color
non map           (66MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

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

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

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.