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> Changes Obscured?
Laura
post Jun 20 2005, 12:55 AM
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Tom, we missed you at the Father's Day lunch today. We can recreate a meal much easier than the adventures you're having though. Reviewing your trip to the thermokast finally gave me a quesion. That was an interesting sight, although disturbing to see how fast global climate changes are affecting the arctic. Do you think climate influenced changes like that would be more noticible down here (in the relatively more developed areas of the lower 48) if it weren't so urbanized / developed? Not that a thermokast could occur in central Ohio, but I still couldn't help think that it might go unnoticed b/c it might be under a parking lot. There might be a big crack, but it could get patched up w/o further thought. Does more extensive use of the land obscure the effects of climate changes?
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John Crumrine
post Jun 20 2005, 01:05 AM
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Tom, thanks for the Father's Day photos and information. The picture of you on the "ladder" was great! Laura helped me figure out how to add replys. Keep up the good work!
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Tom_Crumrine
post Jun 20 2005, 01:41 AM
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Laura,

Thanks for the question. Two things: One changes are accentuated in the arctic because of many factors but one being that in the arctic there is also the shrinking arctic ice issue. Everywhere greenhouse gases are accumulating and creating warming. In the arctic you also have less ice and thus more water. Since ice is white and good at reflecting heat back out and water is dark and good at absorbing heat--the more water and the less ice the warmer it can get.

The other thing is that thermokarsts require permafrost to form. They are formed when permafrost gives way and water begins to flow through that area. Since the lower 48 doesn't have permafrost--no thermokarsts.

Hope that helps--ask a question anytime.

Tom
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