HiRISE | Ancient Terrain Near Tyrrhena Patera (PSP_001674

NASA/JPL-Caltech/UArizona

Ancient Terrain Near Tyrrhena Patera
PSP_001674_1610 Science Theme: Volcanic Processes

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This observation covers a small part of the plains surrounding the volcano Tyrrhena Patera.

Most of this area is covered by a thick layer of "mantling" material which hides the underlying rocks. Infrared data from the Mars Odyssey spacecraft suggested that this area is rockier than most of the region.

The center of the image is at full resolution, but the outer edges have averaged each group of 4 x 4 pixels. This reduces the amount of data that needs to be returned to Earth and helps ascertain how much resolution is actually needed to study this kind of terrain.

This observation confirms that the area is unusually rocky, with some bare patches of ancient shattered rock exposed at the surface. This image is also a good example of how the HiRISE team samples unknown terrain.

Written by: Laszlo P. Kestay (7 March 2007)

Acquisition date
04 December 2006

Local Mars time
15:36

Latitude (centered)
-18.795°

Longitude (East)
105.027°

Spacecraft altitude
255.8 km (159.0 miles)

Original image scale range
from 25.7 cm/pixel (with 1 x 1 binning) to 102.8 cm/pixel (with 4 x 4 binning)

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
5.4°

Phase angle
67.1°

Solar incidence angle
63°, with the Sun about 27° above the horizon

Solar longitude
145.4°, Northern Summer

For non-map projected images
North azimuth: 97°
Sub-solar azimuth: 33.2°

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   (239MB)

IRB color
map-projected   (200MB)

JP2 EXTRAS
Black and white
map-projected (119MB)
non-map           (110MB)

IRB color
map projected (35MB)
non-map           (170MB)

Merged IRB
map projected (75MB)

Merged RGB
map-projected (76MB)

RGB color
non map           (162MB)

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-Caltech/UArizona

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.