HiRISE | Small Mounds in Chryse Planitia (ESP_022381

NASA/JPL/University of Arizona

Small Mounds in Chryse Planitia
ESP_022381_2000 Science Theme: Volcanic Processes

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The suggested area in this observation is characterized by a group of cones, shield-like features, and round mounds. They are a few hundred meters to kilometers in diameter but their heights are unknown.

Possible explanations for their formation include sedimentary (mud) volcanism and magmatic volcanism. HiRISE data would be essential for distinguishing these hypotheses.

This caption is based on the original science rationale.

Written by: HiRISE Science Team (13 July 2011)

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Acquisition date:	06 May 2011	Local Mars time:	2:23 PM
Latitude (centered):	19.794 degrees	Longitude (East):	322.546 degrees
Range to target site:	284.7 km (178.0 miles)	Original image scale range:	57.0 cm/pixel (with 2 x 2 binning) so objects ~171 cm across are resolved
Map projected scale:	50 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	0.3 degrees	Phase angle:	56.0 degrees
Solar incidence angle:	56 degrees, with the Sun about 34 degrees above the horizon	Solar longitude:	287.5 degrees, Northern Winter
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North azimuth:	97 degrees	Sub-solar azimuth:	316.5 degrees
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North azimuth:	270 degrees	Sub solar azimuth:	131.0 degrees

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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.