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U-M divers retrieve 8,900-year-old piece of wood from Lake Huron
Annarbor.com (12/12)
University of Michigan researchers announced they have found a 5 1/2 foot long, pole-shaped piece of wood that is 8,900 years old in Lake Huron.
Superior researchers studying invasives, ballast water
Ashland Current (2/9)
Determining how clean a ship's ballast water must be to prevent the spread of aquatic invasive species is the goal of the latest research partnership between the Northeast-Midwest Institute and the Lake Superior Research Institute at the University of Wisconsin-Superior.
RIVERKEEPERS: Tending the waterways
Niagara Gazette (2/6)
The goal of the Buffalo Niagara Riverkeeper is two-fold: protecting the water quantity and the quality, as well as connecting people to the waterfront.
Internationally renowned ‘Ocean Doctor’ to speak in Grand Rapids
MLive.com (2/3)
Known as the “Ocean Doctor,” David Guggenheim will speak in Grand Rapids, Mich., about the many similarities between the threats to the oceans and to our Great Lakes.
SUNY Fredonia to lead Great Lakes pollution study
Wall Street Journal (2/3)
Plastic pollution in the Great Lakes will be the focus of a study this summer. Led by the State University of New York at Fredonia, researchers will try to quantify the amount of plastic polluting the fresh water Great Lakes.
SSC students taking part in marine science bowl
Arenac County Independent (1/31)
Teams of Michigan high school students will be heading to Ann Arbor this weekend to take part in the annual Great Lakes Bowl, a quiz event that focuses on questions about marine and freshwater systems and biology.
What's going on in your neighborhood this month? Meet other people and learn together at recreational and educational events! Our new dynamic calendar is updated daily with current educational events.
What year did Lake Ontario freeze completely solid for one day?
from Anthony in Wilson, NY, Age 62
The Great Lakes can sometimes freeze completely over, but the water beneath the surface layer of ice remains in a liquid state well above the freezing point: 32 degrees Farenheight or 0 (zero) degrees Celsius. If all this water froze completely solid, even for a day, then all of the lifeforms in the lake would die!
Lake Erie, for example, is the shallowest lake and the lake with the least volume. It can freeze over (but not completely solid) during any severe winter. On the other hand, Lake Ontario -- with the second deepest average depth of all the Great Lakes and a volume approximately 3.5 times that of Lake Erie -- will only have about 25% ice coverage of its surface during a severe winter.
Related references:
TEACH: Do the Great Lakes freeze in the winter?
Great Lakes Aquarium: How often do the Great Lakes freeze completely over?
GLERL: Great Lakes Surface Environmental Analysis (GLSEA)
Thank you for your question!
Answered on August 3, 2001