MSGID: 1:317/3 64062a41   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
    EPOD - a service of USRA   
      
   The Earth Science Picture of the Day (EPOD) highlights the diverse processes   
   and phenomena which shape our planet and our lives. EPOD will collect and   
   archive photos, imagery, graphics, and artwork with short explanatory   
   captions and links exemplifying features within the Earth system. The   
   community is invited to contribute digital imagery, short captions and   
   relevant links.   
      
      
    Giant Bialy   
      
      March 06, 2023   
      
       20210710_132845   
      
       20230105_093118   
      
      Photographer:  Roger Hopkins   
      Summary Author:  Roger Hopkins   
      Our waterfall produces a full menu of foam goodies, including   
      marshmallows, pancakes, donuts, bagels, and recently, a spectacular   
       bialy. This  foam, frequently misunderstood to be man-made   
      pollution, is a natural phenomenon in our case. Decaying plant material   
      is mixed in the turbulence of the stream, acting as a  surfactant to   
      reduce the  surface tension of the water and allowing the formation   
      of persistent small "soap" bubbles in the turbulence. We normally see   
      these after a period of rain with more organic material leaching into   
      the stream.   
      The waterfall has this nice gentle  eddy at the base that forms   
      these round shapes. The brown streaks are probably caused by  tannin   
      washed into the stream from decaying oak leaves and branches upstream.   
       Click here to see a video of this foam forming. Photo taken on   
      January 5, 2023.   
      
      Asbury, New York: 42.526283332981414, -76.48522451537521   
      
   Related EPODs   
      
       Giant Bialy  Wallaman Falls, Australia  Water Eruption   
       Flood Hazard in the Desert  Skypools on Surface Waves  Great   
      Salt Lake’s Mirabilite Mounds   
       More...   
      
   Hydrology Links   
      
        *  Current Sea Surface Temperature   
        *  NOAA Ocean Explorer Gallery   
        *  Ocean Color   
        *  What is hydrology?   
        *  Tides and Currents   
        *  Water Resources of the United States   
        *  World Waterfall Database   
        *  The USGS Water Science School   
        *  World Water Database   
        *  The World’s Water   
        *  USGS Surface Water Information Pages   
      
   -   
      Earth Science Picture of the Day is a service of the  Universities   
      Space Research Association.   
      
   https://epod.usra.edu   
       
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