NASA Photo ID: STS048(E)010        File Name: 10065037.jpg
  Film Type: ESC BW                  Date Taken: 09/18/91
  Title: STS-48 ESC Earth observation of ice pack, Antarctic Ice Shelf
  Description:
  STS-48 Earth observation taken aboard Discovery, Orbiter Vehicle (OV) 103, 
  is of the breakup of pack ice along the periphery of the Antarctic Ice
  Shelf.  Strong offshore winds, probably associated with katabatic
  downdrafts from the  interior of the continent, are seen peeling off the
  edges of the ice shelf  into long filaments of sea ice, icebergs, bergy
  bits, and growlers to flow  northward into the South Atlantic Ocean.  These
  photos are used to study  ocean wind, tide and current patterns.  Similar
  views photographed during  previous missions, when analyzed with these
  recent views may yield  information about regional ice drift and breakup of
  ice packs.  The image was  captured using an electronic still camera (ESC),
  was stored on a removable  hard disk or small optical disk, and was
  converted to a format suitable for  downlink transmission.  The ESC
  documentation was part of Development Test  Objective (DTO) 648, Electronic
  Still Photography.         
  Subject terms:
  ANTARCTIC REGIONS                       
  DISCOVERY (ORBITER)                     
  EARTH OBSERVATIONS (FROM SPACE)         
  ELECTRO-OPTICAL PHOTOGRAPHY             
  ICE                                     
  ICE FLOES                               
  OCEAN CURRENTS                          
  OCEANS                                  
  PACIFIC OCEAN                           
  SEA ICE                                 
  SNOW                                    
  STS-48                                  
  

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