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Politics : Foreign Affairs Discussion Group -- Ignore unavailable to you. Want to Upgrade?

To: frankw1900 who wrote (15702)	1/7/2002 11:29:23 AM
From: Hawkmoon	Read Replies (2) \| Respond to of 281500

The fresh water floating on the colder, denser salt water freezes at a higher temperature so the ice cap forms faster and lasts longer insulating the salt H2O below. Salt water doesn't freeze. That's why they throw salt on icy roads. Thus, fresh water would likely freeze at a lower temperature than denser salt water (as salt is pushed out by the solidifying water turning to ice). So the lack of available fresh water would actually cause less ice to form because only the saltier water remains and the temperature needs to drop lower for that salinated water to solidify. It's an interesting theory, but a more heavily salinated water at upper latitudes would seem to be what would maintain the flow of the Ocean conveyor. The less fresh water from river or melting icebergs, the better, IMO.. So the theory you're discussing would seem to negate the theory that global warming would dilute the ocean conveyor, and then plunge us into an iceage. In fact, cutting off the supply of fresh water to arctic regions could be, in the words of Martha Stewart, "a good thing".. <gg> In fact, such projects may have helped to negate the consequences of natural warming and cooling cycles that the earth has a history of going through in the past. I believe nature is a far greater force for climatic change, than anything mankind can inflict. Anyone that doubts it need only reveiw the results of Mount St. Helens and the amounts of greenhouse gases it injected into the atmosphere. Hawk