Posted by: tpsciencefun | January 6, 2010

What is a Winter Beach?

 

Where oh where did our beach sand go?

Oh where oh where did it go?

Now there are piles of rocks everywhere….

Oh where oh where did our sand go?

Clue: it’s not too far away and most of it will be back in time for summer.

To learn more and understand why our beached look and feel completely different go to:

http://coastalchange.ucsd.edu/st3_basics/beaches.html

Evidence of seasonal variation of local beaches.  Can you see the difference?

Summer Beachs are wide with lots of sand.

Winter beaches are narrow and mostly covered with rocks.
 

The summer beach is covered with a layer of sand that is moved south by the longshore currents and onshore by low waves. The winter beach is denuded of sand by high storm waves. Cobbles are heavier and remain on the beach. The wave-cut platform underlying the mobile sediments is visible in the foreground.

   
 
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