Dusty Top of Alba Patera Volcano
Dusty Top of Alba Patera Volcano
PSP_001510_2195  Science Theme: Volcanic Processes
This image shows a small portion of the rim of the caldera at the top of the volcano Alba Patera.

This volcano has shallower slopes than most of the other large volcanoes on Mars. Unfortunately, this image is not able to help us understand what is unique about Alba Patera because of the thick dust cover.

Instead it shows that the dust has been carved into streamlined shapes by the wind, cut by small landslides. Interestingly, there are some isolated patches that appear smooth and undisturbed by the wind.

Written by: Laszlo Kestay  (13 December 2006)
Acquisition date
22 November 2006

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
285.8 km (177.6 miles)

Original image scale range
from 57.2 cm/pixel (with 2 x 2 binning) to 114.3 cm/pixel (with 4 x 4 binning)

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

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

Solar longitude
139.0°, Northern Summer

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  353.5°
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   (140MB)

IRB color
map-projected   (85MB)

Black and white
map-projected  (66MB)
non-map           (54MB)

IRB color
map projected  (20MB)
non-map           (68MB)

Merged IRB
map projected  (124MB)

Merged RGB
map-projected  (125MB)

RGB color
non map           (67MB)
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.