                          THEMIS: Image Detail

                                                                        
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                [14]                                                    
                                                                        
           Amenthes Crater                                              
          (Released 11 July                                             
                2002)                                                   
                                                                        
                [15]                                                    
                                                                        
           Image Context:                                               
                                                                        
         Context image                                                  
         credit: NASA/Mars                                              
         Orbiter Laser                                                  
         Altimeter (MOLA)                                               
         Team                                                           
                                                                        
           [ Find on map:                                               
           Javascript [16]                                              
              version ]                                                 
                                                                        
         [ Find on map: CGI                                             
           [17]  version ]                                              
                                                                        
         The floor of a 75                                              
         km diameter crater                                             
         in the Amenthes                                                
         region of Mars                                                 
         displays lobate                                                
         flow features in                                               
         the center of this                                             
         THEMIS image. It                                               
         is possible that                                               
         the flows are lava                                             
         but there is no                                                
         sign of the source                                             
         vent. Note how the                                             
         material has                                                   
         spread out across                                              
         the floor of the                                               
         crater and                                                     
         surrounds a                                                    
         peninsula of                                                   
         higher terrain in                                              
         the lower 1/3 of                                               
         the image.                                                     
         Wherever the flow                                              
         encounters                                                     
         elevated                                                       
         topography it                                                  
         fails to lap up                                                
         onto it and                                                    
         instead produces a                                             
         distinct margin                                                
         that in some                                                   
         places looks                                                   
         thicker than the                                               
         rest of the flow.                                              
         These are the                                                  
         features of a                                                  
         viscous material                                               
         like lava but a                                                
         dense mudflow                                                  
         could also produce                                             
         such features.                                                 
         Viking and MOC                                                 
         wide angle images                                              
         of this crater                                                 
         show a stubby                                                  
         channel entering                                               
         from the southern                                              
         rim, with the east                                             
         side just visible                                              
         in the bottom left                                             
         of the THEMIS                                                  
         image. It is                                                   
         possible that a                                                
         mudflow could have                                             
         emerged from this                                              
         channel, perhaps                                               
         even multiple                                                  
         times, to produce                                              
         the features we                                                
         see today.                                                     
                                                                        
         [Source: ASU                                                   
         THEMIS Science                                                 
         Team]                                                          
                                                                        
         Note: this THEMIS                                              
         visual image has                                               
         not been                                                       
         radiometrically                                                
         nor geometrically                                              
         calibrated for                                                 
         this preliminary                                               
         release. An                                                    
         empirical                                                      
         correction has                                                 
         been performed to                                              
         remove                                                         
         instrumental                                                   
         effects. A linear                                              
         shift has been                                                 
         applied in the                                                 
         cross-track and                                                
         down-track                                                     
         direction to                                                   
         approximate                                                    
         spacecraft and                                                 
         planetary motion.                                              
         Fully calibrated                                               
         and geometrically                                              
         projected images                                               
         will be released                                               
         through the                                                    
         Planetary Data                                                 
         System in                                                      
         accordance with                                                
         Project policies                                               
         at a later time.                                               
                                                                        
         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.                                                      
                                                                        
         Image Credit:                                                  
         NASA/JPL/Arizona                                               
         State University                                               
                                                                        
          [ Show Full-Size                                              
          Image (GIF) [18]                                              
         ] [ Show Full-Size                                             
         Image (JPG) [19]  ]                                            
                                                                        
          [ Show Full-Size                                              
          Image (PNG) [20]                                              
         ] [ Show Full-Size                                             
         Image (TIF) [21]  ]                                            
                                                                        
                   Parameter   Value             Parameter   Value      
                                                                        
                    Latitude   6.7              Instrument   VIS        
                                                                        
                   Longitude   253.3W           Resolution   19         
                               (106.7E)                (m)              
                                                                        
         Image Size (pixels)   3025x1238        Image Size   57.5x23.5  
                                                      (km)              
                                                                        
                                                                  [22]  
                                                                        
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Site notes:
  [1] http://themis.asu.edu/inst.html
  [2] http://themis.asu.edu/goals.html
  [3] http://themis.asu.edu/mission.html
  [4] http://themis.asu.edu/themis_pics.html
  [5] http://themis.asu.edu/themis_team.html
  [6] http://tes.asu.edu/neweducation.html
  [7] http://mars.jpl.nasa.gov/odyssey/
  [8] http://tes.asu.edu/
  [9] http://tes.asu.edu/
  [10] http://tes.asu.edu/MINITES/
  [11] http://tes.asu.edu/MINITES/
  [12] http://www.asu.edu/
  [13] http://www.nasa.gov/
  [14] latest.html
  [15] fullimages/20020711a.jpg
  [16]
/mars-bin/
mars_js_frames.pl?CENT_LAT=6.718166097&CENT_LON=253.
278823&RESCALE=64&TNAIL_LINK=20020711a
  [17]
/mars-bin/
mars_cgi_map.pl?CENT_LAT=6.718166097&CENT_LON=253.
278823&RESCALE=64&TNAIL_LINK=20020711a
  [18] /fullimages/20020711a.gif
  [19] /fullimages/20020711a.jpg
  [20] /fullimages/20020711a.png
  [21] /fullimages/20020711a.tif
  [22] http://validator.w3.org/check/referer
