Ice Quakes (Baddly named)

Lots of news about ice quakes lately but what are they you ask?
When it gets cold the water in the top layers of ground freeze. Typically in Ontario this is the top 2 or 3 feet of soil. This is why you have to put posts, concrete footings and the like down 3 feet or so (depending on your local municipality rules and codes.)
When it gets really cold after a wet spell this water freezes fast and water expands when it freezes. The resulting expansion of the soil causes it to buckle and heave causing the "quakes."
They are generally very localized and multiple reports from an area will be for multiple ice quakes which are too small and being in only the top 3 feet of soil won't affect much of an area. On a lake the cracks can be miles long but in soil the variability of the soil tends to make them shorter and while they can be noisy if right beside your house generally harmless.
The scientific name for the phenomenon is cryoseism, also called frost quakes.
This has nothing to do with earth quakes as they are in the rock and not the soil. Earth quakes are caused by the bedrock or lower rock layers moving or buckling due to plate tectonics (generally but that's another post later.)
Freezing the surface layer of soil does not affect earth quakes nor do earth quakes generally affect ice quakes as they do not have a common factor in their cause.
What would be cool would be any one who has pictures of the results of an ice quake near them to post the images to Google plus and link them in the comments.