Debris Flows on Mars
NASA/JPL/University of Arizona
Debris Flows on Mars
PSP_007033_1445  Science Theme: Impact Processes
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Channels are found all around Hale Crater. The largest channels were there before the formation of Hale, such as Uzboi Vallis.

The impact that created Hale Crater smashed directly into Uzboi Vallis, a very large channel thought to have periodically transported hundreds of thousands of cubic meters of water per second. Another nearby channel is Nirgal Vallis, an approximately 700 kilometer (430 miles)-long channel interpreted to have formed from groundwater sapping. Nirgal Vallis is about 300 kilometers (190 miles) from Hale.

Other, smaller channels also radiate from Hale. The relationship between the channels and the ejecta from Hale Crater strongly suggests the Hale-forming impact event created, or at least heavily modified, the channels.

One of the types of channels thought to have been formed at the same time as Hale Crater is a channel with raised margins. These channels are relatively short (less than 5 kilometers, or 3 miles) and less than 0.5 kilometers (0.3 miles) wide. They are found on the slope break at the very edge of the northern rim of Argyre Basin, which opens to the bottom left of this image. We interpret these channels to be the result of debris flows.
Written by: Andrea Philippoff Jones  (9 June 2008)

This is a stereo pair with ESP_016197_1445.
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Acquisition date
26 January 2008

Local Mars time:
14:49

Latitude (centered)
-35.000°

Longitude (East)
321.183°

Range to target site
258.2 km (161.4 miles)

Original image scale range
51.7 cm/pixel (with 2 x 2 binning) so objects ~155 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
7.5°

Phase angle:
55.2°

Solar incidence angle
60°, with the Sun about 30° above the horizon

Solar longitude
23.0°, Northern Spring

For non-map projected images
North azimuth:  98°
Sub-solar azimuth:  46.6°
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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.