Syria Planum Terrain
Syria Planum Terrain
ESP_022212_1650  Science Theme: Volcanic Processes
This observation was to offer us a two-for-one treat: a small volcano and a double crater with ejecta ridges caused by a binary impact.

However, with little data volume, we were not able to get both targets, so we used a manual delay to image the double crater. A possible re-image of this area might focus on the volcano.

The site appears fairly dusty and there may not be much fine-scale structure to see.

Syria Planum is a broad plateau, forming part of the Tharsis region, which is home to the largest volcanos in the Solar System. Some of these, Arsia Mons and Pavonis Mons, are called "shield" volcanos.

This caption is based on the original science rationale.

Written by: HiRISE Science Team  (27 May 2011)
Acquisition date
23 April 2011

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
250.9 km (155.9 miles)

Original image scale range
50.7 cm/pixel (with 2 x 2 binning) so objects ~152 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection

Emission angle

Phase angle

Solar incidence angle
39°, with the Sun about 51° above the horizon

Solar longitude
279.3°, Northern Winter

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  344.6°
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   (266MB)

IRB color
map-projected   (126MB)

Black and white
map-projected  (123MB)
non-map           (168MB)

IRB color
map projected  (51MB)
non-map           (148MB)

Merged IRB
map projected  (269MB)

Merged RGB
map-projected  (250MB)

RGB color
non map           (138MB)
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’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.