Mars Global Surveyor
Mars Orbiter Camera
Lineated Valley Floor, Northern Arabia
MGS MOC Release No. MOC2-153, 19 July 1999
VIEWING OPTIONS:
1.3 MByte gif --
375 KByte gif
Valley floors in the martian middle latitudes
(30° and 50°)--particularly
among the troughs and valleys of the "fretted terrain" in
northern Arabia Terra--have curious ridged,
grooved, and pitted surfaces known prior to the Mars Global Surveyor (MGS)
mission as "lineated valley fill." Before the MGS mission, some people
had thought that the lineated valley floors might be the result of
flow--like the material in a glacier on Earth. The MOC image suggests
that these features are not glaciers and
they show very little evidence (if any) of flow. Their origin is
presently unknown. This MGS Mars Orbiter Camera image was
taken in July 1998. Illumination is from the 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.
To MSSS Home Page
Contact: info@msss.com