‘Ice quakes’ hit Wisconsin: Deep booms heard in the middle of the night cracks open in frozen ground

dailymail.co.uk

Some strange booms have shaken residents in Fond du Lac County, Wisconsin.

The series of explosion-like sounds rattled residents from Waupun, Campbellsport and elsewhere Tuesday and sent Fond du Lac County sheriff’s deputies out looking for a cause.

Geologists say the booms were likely a phenomenon commonly known as an ice quake.

They are the after-effects of the frost quakes – or cryoseism – which are more commonly found on glaciers in the polar regions.

It’s caused by water that sinks into the soil and bedrock where it freezes and expands, causing an explosive popping sound that feels like a mild earthquake.

Most frost quakes occur after a heavy rainfall or snow fall when there is a large amount of moisture on the ground.

University of Wisconsin-Milwaukee seismologist Brett Ketter tells Action Reporter Media he experienced an ice quake this week and initially thought the pipes had burst in his house.

Mr Ketter says he ran outside in his slippers to see if something had hit his house.

One family had to deal with a giant, 100-foot long crack in their rural driveway.

Dennis Olsen heard an explosive sound and initially thought his garage might have blown up. That wasn’t the case. Then he checked his basement, thinking a wall had split. Everything looked fine.

It wasn’t until the next morning that Olsen discovered the driveway fissure.

Read more at dailymail.co.uk



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