MEDIA RELATIONS OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIFORNIA 91109.  TELEPHONE (818) 354-5011
http://www.jpl.nasa.gov

Contact:  Mary Hardin (818) 354-5011

IMAGE ADVISORY                                 May 24, 2001

NEW DUST DEVILS, DUNES & MORE FROM MARS GLOBAL SURVEYOR

     Pictures of intriguing Martian features such as dust 
storms, dust devils, 3-D sand dunes, a recent image of "the 
face," and dark streaks that may be caused by dust avalanches 
have been released by the imaging team for NASA's Mars Global 
Surveyor spacecraft that have been taken during the extended 
mission phase that began February 1, 2001.

     The newly released images are products of the main 
objectives for the camera team during the extended mission, 
including:

     -  Continued daily monitoring of Martian weather, storms, 
     and polar cap changes; 
     -  Looking for changes caused by frost, wind, slope 
     movements, and gully action with the high-resolution camera;
     -  The opportunity to take a second look at features 
     previously seen by the camera by turning and pointing the 
     spacecraft to provide "3-D" (stereoscopic) views of certain 
     areas; 
     -  Collecting pictures of other geologic features of 
     interest, including sites being considered for the two 2003 
     Mars Exploration Rover landings.

          The images are available at these sites: 
          http://www.msss.com/mars_images/moc/extended_may2001/  
          http://photojournal.jpl.nasa.gov
          http://mars.jpl.nasa.gov/mgs

     Mars Global Surveyor is managed by the Jet Propulsion 
Laboratory for NASA's Office of Space Science, Washington, 
D.C.  JPL is a division of the California Institute of 
Technology in Pasadena. The Mars Orbiter Camera is operated by 
Malin Space Science Systems, San Diego, Calif.

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