In the lee of this unnamed crater there are no dunes, but numerous dust devil tracks. Dunes surround the crater, except for the lee area, as shown in image from NASA's Mars Odyssey spacecraft.

Context image for PIA18261
Context image

Today's image shows another section of Siton Undae. There is a crater just off the image to the left (west). In the lee of this unnamed crater there are no dunes, but there are numerous dust devil tracks. Dunes surround the crater, except for the lee area. The winds, moving from west to east, are channeled into a choatic regime by the crater rim, which has created the dune free area and the dust devils.

Orbit Number: 54307 Latitude: 74.3631 Longitude: 300.632 Instrument: VIS Captured: 2014-03-12 11:05

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

NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

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