PIA13163: Northern Ice Cap of Mars
Target Name: Mars
Is a satellite of: Sol (our sun)
Mission: Mars Global Surveyor (MGS)
Spacecraft: Mars Global Surveyor Orbiter
Instrument: Mars Orbiter Camera (MOC)
MOLA
Product Size: 1280 x 1024 pixels (width x height)
Produced By: JPL
Other Information: JPL Press Release 2010-180
Full-Res TIFF: PIA13163.tif (3.936 MB)
Full-Res JPEG: PIA13163.jpg (141.1 kB)

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Original Caption Released with Image:

This image, combining data from two instruments aboard NASA's Mars Global Surveyor, depicts an orbital view of the north polar region of Mars.

The ice-rich polar cap (the quasi-circular white area at center) is approximately 1,000 kilometers (621 miles) across. The white cap is riven with dark, spiral-shaped bands. These are deep troughs that are in shadow. They do not reflect sunlight as well or have more internal layers exposed. To the right of center, a large canyon, Chasma Boreale, almost bisects the ice cap. Chasma Boreale is about the length of the United States' famous Grand Canyon and up to 2 kilometers (1.2 miles) deep.

New findings from the shallow radar instrument aboard the Mars Reconnaissance Orbiter have revealed subsurface geology in this region, allowing scientists to reconstruct the formation process of the large chasm and spiral troughs (see PIA13164).

The image synthesizes topographic data from Mars Orbiter Laser Altimeter (MOLA) and images from the Mars Orbiter Camera (MOC).

Mars Global Surveyor, launched in 1996, operated longer at Mars than any other spacecraft in history. It went silent in November 2006, after gathering data at Mars for more than four times as long as originally planned.

Image Credit:
NASA/JPL-Caltech/MSSS

Image Addition Date:
2010-05-26