How Did This Ice Spike Happen?
Thursday 17th January 2013
Patch called LBC 97.3's Mystery Hour with a fascinating question: How did this happen?
James O'Brien had never heard of this phenomenon, but was then inundated with other examples of these ice spikes.
Lil sent us this one:
This is the explanation of why it happens:
Water expands when it freezes. If there is already a thin sheet surface ice over the body of water, further freezing can force water out and upwards through a crack or weak point in the sheet. This can produce a tube-like structure where water emerges at the tip, progressively lengthening the tube.