Freeze & Thaw

Posted by Eric Cousineau (Sherwood Park, Canada) on 3 December 2015 in Plant & Nature and Portfolio.

Frost weathering, frost wedging, ice wedging or cryofracturing is the collective name for several processes where ice is present. These processes include frost shattering, frost-wedging and freeze-thaw weathering. Severe frost shattering produces huge piles of rock fragments called scree which may be located at the foot of mountain areas or along slopes. Frost weathering is common in mountain areas where the temperature is around the freezing point of water. Certain frost-susceptible soils expand or heave upon freezing as a result of water migrating via capillary action to grow ice lenses near the freezing front. This same phenomenon occurs within pore spaces of rocks. The ice accumulations grow larger as they attract liquid water from the surrounding pores. The ice crystal growth weakens the rocks which, in time, break up. It is caused by the approximately 10% (9.87) expansion of ice when water freezes, which can place considerable stress on anything containing the water as it freezes.

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Devi from Chennai, India

Nice shot and helpful info !!

3 Dec 2015 10:34am

Dimitrios from ATHENS, Greece

definately COOL*

3 Dec 2015 11:13am

franz from Baden, Austria

now we know scientifically why we slip on ice on the sidewalks ... ;-)

3 Dec 2015 3:03pm

Shaahin Bahremand from Tehran, Iran

good shot

3 Dec 2015 5:08pm

Steve Rice from Olympia, United States

Looks mighty icy.

4 Dec 2015 1:35am

L'Angevine from Angers, France

oh bien ces bleus

4 Dec 2015 3:19pm

1/180 second
ISO 200
300 mm (35mm equiv.)


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