A cryoseism, ice quake or frost quake,[1][2][3][4] is a seismic event caused by a sudden cracking action in frozen soil or rock saturated with water or ice,[5] or by stresses generated at frozen lakes.[6] As water drains into the ground, it may eventually freeze and expand under colder temperatures, putting stress on its surroundings. This stress builds up until relieved explosively in the form of a cryoseism.[1][7]
The requirements for a cryoseism to occur are numerous;[1][2] therefore, accurate predictions are not entirely possible and may constitute a factor in structural design and engineering when constructing in an area historically known for such events.[5] Speculation has been made between global warming and the frequency of cryoseisms.[8]