[meteorite-list] MRO HiRISE Images - December 7, 2011

[Ron Baalke]

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
December 7, 2011

o Frosty Northern Dunes	
  http://hirise.lpl.arizona.edu/ESP_024265_2535

  It is early spring in the Northern hemisphere of Mars, and 
  these barchan dunes are covered with a layer of seasonal carbon 
  dioxide ice.

o Crater Features	
  http://hirise.lpl.arizona.edu/ESP_024473_2205

  At HiRISE resolution, we can better see the hollows and pits, 
  along with the shapes of alcoves of gullies that are now filled up.

o Meanders and Tributaries in Ridge Form in the Zephyria Region	
  http://hirise.lpl.arizona.edu/ESP_024484_1750

  This was once a river bed that meandered due to changes in 
  topography.

o Interacting Fossae Segments East of Athabasca Valles	
  http://hirise.lpl.arizona.edu/ESP_024576_1900

  Understanding the possible volume and flux of water in the ancient 
  past may help in learning how the flood channel formed.

All of the HiRISE images are archived here:

http://hirise.lpl.arizona.edu/

Information about the Mars Reconnaissance Orbiter is 
online at http://www.nasa.gov/mro. The mission is 
managed by NASA's Jet Propulsion Laboratory, a division 
of the California Institute of Technology, for the NASA 
Science Mission Directorate, Washington, D.C. Lockheed 
Martin Space Systems, of Denver, is the prime contractor 
and built the spacecraft. HiRISE is operated by the 
University of Arizona. Ball Aerospace and Technologies 
Corp., of Boulder, Colo., built the HiRISE instrument.