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The most common active process affecting the surface of Mars today is erosion by the wind. In areas of poorly cemented surface materials, the effect is more easily seen. This image near Gordii Dorsum has been eroded for millions of years. Long term unidirectional winds scour the surface into linear patterns.

Orbit Number: 77384 Latitude: 11.6001 Longitude: 217.394 Instrument: VIS Captured: 2019-05-26 02:34

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.