Flooded Impact Craters in Hebrus Valles
NASA/JPL-Caltech/UArizona
Flooded Impact Craters in Hebrus Valles
ESP_074187_2010  Science Theme: Fluvial Processes
Hebrus Valles are a complex set of channels in the northern lowlands of Mars just to the west of the Elysium volcanic region.

The channel segments to the north of this image display a variety of features, including streamlined forms and terracing that are suggestive of catastrophic flooding.

However, this observation shows channels of uniform width suggesting more persistent flows eroding into and around two impact craters, each about 200 hundred meters in diameter. This complex geology may be the result of formation in volcanic terrains as fluid flows erode into basalt and interbedded ash or sediment layers. The channel system is thought to be early Amazonian in age (as far back as 3 billion years ago), which is younger than many of the other outflow channels on Mars.

Written by: Ginny Gulick (narration: Tre Gibbs)  (22 June 2022)

This is a stereo pair with ESP_073686_2010.
 
Acquisition date
24 May 2022

Local Mars time
15:18

Latitude (centered)
20.811°

Longitude (East)
126.030°

Spacecraft altitude
286.0 km (177.8 miles)

Original image scale range
32.5 cm/pixel (with 1 x 1 binning) so objects ~98 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
29.6°

Phase angle
90.0°

Solar incidence angle
64°, with the Sun about 26° above the horizon

Solar longitude
233.8°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  326.5°
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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.