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 Posted: Tue Nov 27, 2007 8:09 pm
http://www.cbc.ca/news/background/water/greatlakes.htmlNov 23 2007 Quote: "The water — which represents about 20 per cent of the world's freshwater supply — is evaporating at a faster rate due to global warming, he says. Although the Great Lake levels fluctuate on a cycle, every six to seven years, the water is one-half metre below those projections." http://www.cbc.ca/technology/story/2007/10/19/science-lake-levels.html Oct 19 2007 Apparently scientists have been looking into the matter since 2006. They won't have a report ready until Februrary 2009 which is a year ahead of the planned schedule due to governments on both sides putting pressure on them to complete it quickly. Dredging was done in the 1960s and that's what the Georgian Bay Association is saying could be a potential culprit for the water loss. An interesting tidbit from this source. Quote: "Lakes Huron and Michigan are at their lowest levels since the 1960s and Lake Superior is at its lowest since 1926, according to a report from the Canadian Hydrology Service at Burlington, Ont." Post edited Oct 3 for second link and information under it. as well as dates for the links
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Posted: Wed Nov 28, 2007 7:48 am
The history of pollution in the great lakes. As well as why eating fish from the great lakes isn't recommended at the moment.
http://archives.cbc.ca/IDD-1-75-1390/science_technology/great_lakes_pollution/
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Posted: Wed Nov 28, 2007 3:18 pm
but wait, the water just doesn't disappear, it would just mean a more precipitous area, right?
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Posted: Thu Nov 29, 2007 7:13 am
Purplepiratelynn but wait, the water just doesn't disappear, it would just mean a more precipitous area, right? Just because water evaporates in one area doesn't mean it's going to rain in that same spot. The clouds that arrive over the Great Lakes normally comes from out west and travel eastwards towards Toronto. Runoff might have had a part to play in this too. But, the article doesn't mention it. Keep in mind that the guy CBC is talking to is only an author and scientists have yet to adjust their estimates. I'd like to read this guy's book though.
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Posted: Thu Nov 29, 2007 3:24 pm
Layers Purplepiratelynn but wait, the water just doesn't disappear, it would just mean a more precipitous area, right? Just because water evaporates in one area doesn't mean it's going to rain in that same spot. The clouds that arrive over the Great Lakes normally comes from out west and travel eastwards towards Toronto. Runoff might have had a part to play in this too. But, the article doesn't mention it. Keep in mind that the guy CBC is talking to is only an author and scientists have yet to adjust their estimates. I'd like to read this guy's book though. yeah it would be quite interesting
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Posted: Sat Dec 01, 2007 7:34 pm
Layers http://www.cbc.ca/news/background/water/greatlakes.html Quote: "The water — which represents about 20 per cent of the world's freshwater supply — is evaporating at a faster rate due to global warming, he says. Although the Great Lake levels fluctuate on a cycle, every six to seven years, the water is one-half metre below those projections." okay, here is my problem. It is half a meter. Do you really expect it to be the exact same every single time? I sure hope not.
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Posted: Sun Dec 02, 2007 5:34 pm
torniquet Layers http://www.cbc.ca/news/background/water/greatlakes.html Quote: "The water — which represents about 20 per cent of the world's freshwater supply — is evaporating at a faster rate due to global warming, he says. Although the Great Lake levels fluctuate on a cycle, every six to seven years, the water is one-half metre below those projections." okay, here is my problem. It is half a meter. Do you really expect it to be the exact same every single time? I sure hope not. that is a good point, and maybe lakes in surrounding areas have increased in volume? who knows
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