Worldwide Water Education
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RSS Subscribe: BlogLake Michigan “Marbles”: Ice Boulders Cause a Stir in Michigan
These marbles aren't going to fit in anyone's pocket.
The ice chunks—some weighing as much as 50 pound and as big as beach balls—are not a new phenomenon in the Great Lakes, according to experts, but this year's "Lake Michigan Marbles" are bigger than usual. As Lisa Myers, the chief of interpretation and visitor services for Michigan's Sleeping Bear National Lakeshore explained to the Los Angeles Times in a March 1st article, "the ice chunks form along the shore, get churned back and forth by the waves and grow slowly in the just-below-freezing water, which also helps to smooth the boulders." It's another example of how the Great Lakes' size and location allows them to create their own weather, she added.
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