MARS ODYSSEY THEMIS IMAGES December 1-4, 2003 o Swirling Winds Reflected In Dunes (Released 1 December 2003) http://themis.la.asu.edu/zoom-20031201a.html
These dark transverse and linear dunes are located in the floor of a crater in the southern highlands. The dunes appear to follow the flow of winds that circle around the crater floor, creating a swirling pattern. Rather than swirling winds, however, the apparent arc may simply be caused by a north to south shift in the relative strengths of two winds that influence these dunes. o Disappearing Act (Released 2 December 2003) http://themis.la.asu.edu/zoom-20031202a.html o Nili Fossae in Color (Released 3 December 2003) http://themis.la.asu.edu/zoom-20031203a.html o Hematite Outlier and Sand Dunes (Released 4 December 2003) http://themis.la.asu.edu/zoom-20031204a.html This image shows a crater just south of the edge of the famous hematite-bearing surface, which is visible in the context image as a smooth area to the north. The crater has two features of immediate note. The first is a layered mound in the north part of the crater floor. This mound contains hematite, and it is an outlying remnant of the greater deposits to the north that have otherwise completely disappeared in this crater. The second feature is a dune field in the center of the crater floor, with dark dunes indicating winds from the northwest. The dunes grade into a dark sand sheet with no coherent structure, indicating that the sand layer thins out to the south and east. All of the THEMIS images are archived here: http://themis.la.asu.edu/latest.html NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, 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. ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
