NASA Photo ID: S91-50685           File Name: 10063359.jpg
  Film Type: 4x5                     Date Taken: 11/07/91
  Title: Magellan computer-simulated view of Gula Mons on the surface of Venus
  Description:
  Gula Mons is displayed in this computer-simulated view of the surface of 
  Venus.  The viewpoint is located 110 kilometers (68 miles) southwest of
  Gula  Mons at the same elevation as the summit, 3 kilometers (1.9 miles)
  above  Eistla Regio.  Lava flows extend for hundreds of kilometers across
  the  fractured plains.  The view is to the northeast with Gula Mons
  appearing at  the center of the image.  Gula Mons, a 3 kilometer (1.9 mile)
  high volcano,  is located at approximately 22 degrees north latitude, 359
  degrees east  longitude in western Eistla Regio.  Magellan synthetic
  aperture radar data is  combined with radar altimetry to produce a
  three-dimensional (3D) map of the  surface.  Rays cast in a computer
  intersect the surface to create a 3D  perspective view.  Simulated color
  and a digital elevation map developed by  the United States (U.S.)
  Geological Survey are used to enhance small-scale  structure.  The
  simulated hues are based on color images recorded by the  Soviet Venera 13
  and 14 spacecraft.  The image was produced by the Jet  Propulsion
  Laboratory (JPL) Multimission Image Processing Laboratory and is a  single
  frame from a video released at the JPL news conference, 03-05-91.   view
  provided by JPL with alternate number P-38721 MGN77.      
  
  Subject terms:
  CRATERS                                 
  LANDFORMS                               
  LAVA                                    
  MAGELLAN SPACECRAFT (NASA)              
  RADAR DATA                              
  VENUS SURFACE                           
  VOLCANOES                               
  

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