© 2019 av Johan Hammar

Why does the lake ice sing?

When the air temperature falls below zero  

the ice shrinks on the surface.  

On the underside, the temperature is around 0 °C. 

The ice does not shrink as much there.  

 

The tension in the ice that results  

can be likened to a mini earthquake.  

The vibrations from the quake create strange sounds.  

This is said to be the ice singing.