Active Slope Flows on the Central Hills of Hale Crater
NASA/JPL/University of Arizona
Active Slope Flows on the Central Hills of Hale Crater
ESP_031203_1440  Science Theme: Mass Wasting Processes
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HiRISE has been monitoring steep slopes on Mars because some of them reveal active processes. In some cases, there are many seasonal flows on warm slopes, suggesting some role for water in their activity.

The central hills in Hale Crater is one such location, with thousands of seasonal flows on steep slopes below bedrock outcrops. The cutout shows a small sample of this image, with relatively dark and reddish lines extending onto sediment fans.

These lines grow slowly over several months time, fade and disappear in the cold season (southern winter), then reform the next warm season (southern spring and summer).

Written by: Alfred McEwen   (29 May 2013)

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Acquisition date
23 March 2013

Local Mars time:
14:40

Latitude (centered)
-35.672°

Longitude (East)
323.484°

Range to target site
264.4 km (165.2 miles)

Original image scale range
26.4 cm/pixel (with 1 x 1 binning) so objects ~79 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
13.9°

Phase angle:
23.5°

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

Solar longitude
287.7°, Northern Winter

North azimuth:
97°

Sub-solar azimuth:
14.3°
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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
For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. 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. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.