MSGID: 1:317/3 6339d1d6   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   October 2, 2022 - Sediment off South Korea   
      
      sediment   
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      The waters surrounding the southern coast of South Korea were tinted   
      with muddy-tan and tinged with green in late September 2022. The   
      Moderate Resolution Imaging Spectroradiometer (MODIS) on board NASA’s   
      Terra satellite acquire a true-color image of the scene on September   
      28.   
      
      The striking colors the result of sediment floating in the Yellow Sea   
      (west) and Sea of Japan (east) off the coast of South Korea. More than   
      1,000 islands sit off the southwest coast of the country, and most are   
      surrounded by shallow tidal flats. As tides wash across the flats, mud,   
      sand, and other sediment is stirred up to float on the surface of the   
      waters. The tidal flats, called "getbol" in Korean, are highly   
      productive ecosystems. The mineral-rich sediments are full of   
      microorganisms that attract marine animals such as clams and mud   
      octopuses. The flats serve also as an important stopover for many   
      migratory birds.   
      
      When sediment floats near the surface, it lends a tan or mud-colored   
      tone to the water, as can be seen around the islands of Sinan County.   
      However, as sediment sinks under the surface, the reflectivity changes,   
      making it appear green and then blue as it sinks deeper under the   
      surface. This transition can be seen most clearly around the islands,   
      but also occurs off the southeastern coast of South Korea.   
      
      Image Facts   
      Satellite:  Aqua   
      Date Acquired: 9/30/2022   
      Resolutions:  1km (193.6 KB),  500m (507.2 KB),  250m (1.1 MB)   
      Bands Used: 1,4,3   
      Image Credit: MODIS Land Rapid Response Team, NASA GSFC   
      
      
      
   https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-10-02   
       
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