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Mars Global Surveyor
Mars Orbiter Camera

Northern Terra Meridiani Rocks and Cliffs in 3-D

MGS MOC Release No. MOC2-287, 12 June 2001

White box shows location of 3-D image:
MOC Red Wide Angle Context Image E04-02224; 275 KBytes

Anaglyph of FHA-00541 and E04-02223; Terra Meridiani
25% Size (610 KBytes)
50% Size (2.2 MBytes)
Full Size (7.2 MBytes

Extended Mission operations for the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) include opportunities that come up about 10 times a week to turn and point the MGS spacecraft so that MOC can photograph a feature of high scientific interest. Many of these images are targeted to the site of a previous MOC image, so that a stereoscopic ("3-D") view can be obtained.

The top picture shows a 115 kilometers (~72 miles) wide portion of northern Terra Meridiani, a region of vast layered rock outcrops similar to portions of southeastern Utah and northern Arizona on Earth. The white box in this context image, located near 2.2°N, 1.3°W, shows the location of the high resolution stereo view obtained by MOC by combining a picture taken March 10, 1999 (FHA-00541) with one obtained by pointing the spacecraft on May 28, 2001 (EO4-02223). The stereo view, which requires red (left-eye) and blue (right-eye) "3-D" glasses to be seen, covers an area approximately 2.3 km (1.4 mi) wide by 6.2 km (3.9 mi) long. The full-resolution view is seen at nearly 1.5 meters (5 ft) per pixel, a scale at which objects the size of airplanes and school buses might be seen.

The landscape revealed by the 3-D view is a rugged terrain with steep cliffs and no fresh impact craters. This terrain seems most un-Mars-like compared to the typical cratered and dusty views MOC has provided since it began taking data in September 1997. In fact, one of the MOC science team members remarked, "If I'd seen this landscape used in a movie about Mars five years ago, I'd have said the director had no clue what Mars is supposed to look like." An irregular depression with a flat, mottled, light-toned floor dominates the scene. Small dark ridges on the depression floor near the top center of the image are dunes or drifts formed by wind transport of sandy sediment. The sharp buttes, mesas, and steep cliffs are all indicators that this terrain consists of a broad exposure of martian bedrock. North is up and sunlight illuminates each picture from the left/upper left.

Images Credit: NASA/JPL/Malin Space Science Systems

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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