 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.


 EPOD 20th - Rideau River Pancake Ice

   October 02, 2020

    Rideau River Pancake Ice
   We’re celebrating 20 years of Earth Science Picture of the Day during
   the month of September...and more, there are just too many to fit into
   30 days! Today’s photo features a popular EPOD from the past. Thanks to
   all of our followers (on the blog, Facebook, Instagram and Twitter) for
   supporting us. Thanks also to all of you who’ve submitted your photos.
   We’re most appreciative. This EPOD was originally published January 31,
   2013.

   Photographer:  Rick Stankiewicz
   Summary Author:  Rick Stankiewicz
    Hog’s Back Falls (officially known as the Prince of Wales Falls) is
   an artificially created set of  rapids on the  Rideau River at
   the point where the river splits from the  Rideau Canal in
    Ottawa, Ontario. Here the water drops about 39 ft (12 m) over a run
   of about 1,970 ft (600 m). Although this particular spot along the
   canal is enjoyable year-round, what caught my attention on this visit
   was the back eddy of  pancake ice (bottom center) in juxtaposition
   to the rapids. Pancake ice typically forms from accumulations of
    frazil ice in fast-flowing water. The raised rims of the icy plates
   result from the swirling motion in the backwater of the falls and from
   the growing ice cakes randomly bumping into each other. These floating
   ice formations can range from several inches (4 cm) to several feet (1
   m) across. As pictured above, they're likely several inches (1-3 cm) in
   thickness. Although more commonly found on larger bodies of water such
   as Arctic seas and bays, you may even discover such winter oddities in
   the middle of a mid-latitude city. Photo taken on January 7, 2012.
   Photo Details: Camera: Canon EOS DIGITAL REBEL XTi; Focal Length: 18mm;
   Aperture: f/8.0; Exposure Time: 0.0050 s (1/200); ISO equiv: 200;
   Software: Adobe Photoshop 7.0.
     * Hog's Back Falls, Ontario Coordinates:  45.371021, -75.697024

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    EPOD 20th - Rideau River Pancake Ice  EPOD 20th - Lake Michigan
   Ice Balls Recurrence  EPOD 20th - Hair Ice  EPOD 20th - Snow
   Crystals In February Snowfalls  EPOD 20th - Microscopic View of
   Frost on Blade of Grass  Archive - Avalanche Pass and Hanging Valley
    More...

Cryosphere Links

     *  Guide to Frost
     *  What is the Cryosphere?
     *  Bentley Snow Crystals
     *  Glaciers of the World
     *  Ice, Snow, and Glaciers: The Water Cycle
     *  The National Snow and Ice Data Center Google Earth Images
     *  Snow and Ice Crystals

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   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
