Valleys in Tyrrhena Terra
NASA/JPL/University of Arizona
Valleys in Tyrrhena Terra
ESP_031817_1410  Science Theme: Landscape Evolution
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Enigmatic, shallowly incised valleys are found in some mid- to low-latitude regions on Mars. These valleys are very different in appearance compared to the very old, large, and well-developed valley networks on Mars.

The effects of liquid water or ice on a landscape are a distinctive indicator of past climate, and further insight into the age and origin of these shallow valleys may help advance our understanding of the environment in which they formed and potential late-stage habitability of Mars.

The shallow valley has been filled with small, transverse aeolian ripples (TARS) oriented perpendicular to the valley walls.

Written by: Sharon Wilson  (29 May 2013)

This is a stereo pair with ESP_031751_1410.
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Acquisition date
10 May 2013

Local Mars time:
14:17

Latitude (centered)
-38.853°

Longitude (East)
118.250°

Range to target site
252.4 km (157.8 miles)

Original image scale range
25.3 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
5.6°

Phase angle:
41.9°

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

Solar longitude
316.2°, Northern Winter

For non-map projected images
North azimuth:  96°
Sub-solar azimuth:  31.9°
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map-projected  (329MB)
non-map           (450MB)

IRB color
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non-map           (409MB)

Merged IRB
map projected  (187MB)

Merged RGB
map-projected  (193MB)

RGB color
non map           (375MB)
ANAGLYPHS
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Full resolution JP2 download
Anaglyph details page

DIGITAL TERRAIN MODEL (DTM)
DTM details page

ADDITIONAL INFORMATION
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Merged RGB label
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HiView

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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.