PIA25804: Crater Gullies
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  2001 Mars Odyssey
 Spacecraft:  2001 Mars Odyssey
 Instrument:  THEMIS
 Product Size:  669 x 1423 pixels (w x h)
 Produced By:  Arizona State University
 Full-Res TIFF:  PIA25804.tif (694.9 kB)
 Full-Res JPEG:  PIA25804.jpg (79.56 kB)

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Context image for PIA25804
Context image

This VIS image shows part of the rim of an unnamed crater in Terra Sirenum. A group of channels dissect the rim in the center of the image. These channels are called gullies due to being on a steep slope rather than a flat river plain. In some images it is possible to see a boundary layer between the upper incised gully and a lower deposition region. The boundary marks a change in slope, the steep upper portion supports fast moving fluid that carves into the rim eroding materials. The change to a flatter slope causes the fluid to slow down and as it slows the materials carried by the fluid are deposited.

Orbit Number: 92703 Latitude: -39.1381 Longitude: 182.069 Instrument: VIS Captured: 2022-11-07 10:33

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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