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           | Description | 
           
             English: The M2 tidal constituent. Amplitude is indicated by colour, and the white lines are cotidal differing by 1 hr. The curved arcs around the amphidromic points show the direction of the tides, each indicating a synchronized 6 hour period. 
            R. Ray,  TOPEX/Poseidon: Revealing Hidden Tidal Energy,  GSFC,  NASA. Redistribute with credit to R. Ray, and 
            
             - NASA - Goddard Space Flight Centre
 
             - NASA - Jet Propulsion Laboratory
 
             - Scientific Visualization Studio
 
             - Television Production NASA-TV/GSFC
 
             
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           | Date | 
           2007-03-27 (first version); 2007-04-05 (last version) | 
          
          
           | Source | 
           Transfered from  en.wikipedia | 
          
          
           | Author | 
           Original uploader was  Rmo13 at  en.wikipedia | 
          
          
           Permission ( Reusing this file) | 
           
             PD-USGOV; PD-USGOV-NASA. 
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         Licensing 
        
         
          
           | Public domainPublic domainfalsefalse | 
          
         
         
          
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           This file is in the  public domain because it was solely created by  NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See  Template:PD-USGov,  NASA copyright policy page or  JPL Image Use Policy.) | 
           
            
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