Mars Global Surveyor
Mars Orbiter Camera
Modified Crater, Northern Arabia
MGS MOC Release No. MOC2-152, 19 July 1999
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There are processes that have shaped the martian landscape that
remain unknown or--at least--poorly understood. Mars Global Surveyor (MGS)
Mars Orbiter Camera (MOC) images provide many humbling examples of
terrain that will probably require years of study before their history
is known. The crater shown here--and all of the rough, bumpy
terrain that surrounds it--provide some good examples.
Some craters in the middle latitudes of Mars (i.e., 30° to
50° N and S) exhibit strange, concentric- and radial-textured patterns
on their floors. The patterns seen in this crater give the impression that
material has slid or slumped--perhaps slowly--down into the crater. The
terrain all around the crater is degraded, pitted, and rough. These are
also common features of the middle martian latitudes. Perhaps sublimation
of ice from the soil and bedrock contributes to the creation of these
landforms--but this is only a speculation because such ice is not known
to be present in these regions of Mars. The crater shown here is in
northern Arabia Terra. The picture was taken in April 1998, and is
illuminated by sunlight from the lower right.
Malin Space Science Systems and the California Institute of Technology
built the MOC using spare hardware from the Mars Observer mission. MSSS
operates the camera from its facilities in San Diego, CA. The Jet Propulsion
Laboratory's Mars Surveyor Operations Project operates the Mars Global Surveyor
spacecraft with its industrial partner, Lockheed Martin Astronautics, from
facilities in Pasadena, CA and Denver, CO.
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Contact: info@msss.com