Sunday, February 15, 2015
An icicle is a spike of ice formed when water dripping or falling from an object freezes.Typically, icicles will form when ice or snow is melted by either sunlight or some other heat source (such as a poorly insulated building), and the resulting melted water runs off into an area where the ambient temperature is below the freezing of water (0 degrees), causing the water to refreeze. Over time, continued water runoff will cause the icicle to grow.
Given the right conditions, icicles may also form in caves (known as ice stalactites). They can also form around salty water sinking from sea ice. There can be much damage and injury caused by icicles. Icicles that hang from an object may fall and cause injury and/or damage to whoever or whatever is below them. I can remember Mum always appointing one of us to take the broom out and knock the icicles off the back roof.
(THANK YOU to one of the two VOLUNTEERS that helped take ice off the Library roof yesterday)
Ice deposits can be heavy. If enough icicles form on an object, the weight of the ice can severely damage the structural integrity of the object and may cause the object to break. Whether it be structures, trees, cliffs, poles, wires, caves, etc - BEWARE OF FALLING ICE." BRINICLE"' - ICY FINGER OF DEATH, FILMED IN ANTARCTIC, captured forming by time-lapse camera.