[meteorite-list] MRO HiRISE Images - April 30, 2014

[Ron Baalke]

MARS RECONNAISSANCE ORBITER HIRISE IMAGES
April 30, 2014

o Yardangs Forming Near Gordii Dorsum	
  http://hirise.lpl.arizona.edu/ESP_035558_1830

  The purpose of this observation is to determine how these formations, 
  called "yardangs" are forming within a layer of bedrock.

o The Active Dunes of Nili Patera	
  http://hirise.lpl.arizona.edu/ESP_035603_1890

  By monitoring the sand dune changes, we can determine how winds vary 
  seasonally and year-to-year.

o Changing Dunes and Ripples in Olympia Undae	
  http://hirise.lpl.arizona.edu/ESP_036099_2615

  Because of the high latitude of the dunes, they are covered with water 
  and carbon dioxide frost in the winter and are poorly illuminated.

o Sunken and Pitted Ejecta	
  http://hirise.lpl.arizona.edu/ESP_036182_2230

  The ejecta visible in this image seems to be lower than the surrounding 
  surface, which is unusual since ejecta is laid down on top of existing 
  ground.

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.