Mars Odyssey Mission THEMIS: Feature Image: Ridges swimming in a sea of dust (Released 16 January 2003)

Vital Statistics
Location: 54.9N, 351.0E	Released: 2003-01-16
Image Size: 19.5 x 69.3 km, 1024 x 3648 px
Resolution: 19m	Instrument: VIS

Image Credit: NASA/JPL/ASU

Image Context:
Context image for 20030116a

Wide Context:
Wide context image for 20030116a

Context image credit: NASA/JPL/MOLA
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Detailed information on this image is available at the THEMIS Data Releases website.

Please see the THEMIS Data Citation Note for details on crediting THEMIS images.

The muted terrain of northern Acidalia Planitia testifies to the fact that the region is heavily mantled with dust. The most interesting features in this image are the small terraces located along the flanks of the ridges and the patterned ground seen at the base of the largest ridge (upper right). These features appear to be classic examples of periglacial landforms and may indicate the presence of shallow subsurface ice.