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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: Scumbria who wrote (122636)8/21/2000 4:42:11 PM
From: TimF  Read Replies (1) | Respond to of 1571873
 
The north pole is the coldest place in the Northern Hemisphere. If ice at the north pole shows no signs of having melted over 50,000,000 years and it is melted now, the only reasonable conclusion which can be reached is that polar temperatures are at their warmest in 50,000,000 years.


The main point that I was disputeing was the evidence that
the ice had not melted in 50,000,000 years.

My understanding is that the hole is not actually at the north pole. It is in the artic. "The artic" is a big place. Ice not haveing melted in one place within that area
doesn't necessarily mean it didn't melt anywhere in that area.

A lot of the polar ice cap has melted, and refrozen without even melting thorough, and then melted again and so on. I don't think our techniques for studying ice core samples are so sophisticated that they can from a few samples tell whether the ice has ever melted through anyware in any part of the enormous area within the artic circle at any time within a 50 million year period.

Tim



To: Scumbria who wrote (122636)8/21/2000 4:49:04 PM
From: Joe NYC  Read Replies (2) | Respond to of 1571873
 
Scumbria,

If ice at the north pole shows no signs of having melted over 50,000,000 years and it is melted now, the only reasonable conclusion which can be reached is that polar temperatures are at their warmest in 50,000,000 years.

The bolded portion is either your assumption or a hypothesis. I think it would be a better idea to give some supporting reasoning behind this hypothesis, rather than come up with another hypothesis and use the first hypothesis as a supporting argument of the second one.

Once again, this is what the original article said:
The last time scientists can be certain the pole was awash in water was more than 50 million years ago.

This doesn't say that the the ice caps did not melt 2,500 time in the last 50,000,000 years, it only say that they are certain that it did happen at least once, and it happened 50,000,000 years ago.

To put it another way, suppose I made a statement:
"The last time scientists can be certain the president Clinton left a semen stain on one of his intern's dresses was 4 years ago."

This statement doesn't say anything about any possible stains between then and now. It can't be used to support a statement:
"The dry-cleaning bills of the president Clinton's interns have gone down"

Joe



To: Scumbria who wrote (122636)8/21/2000 8:16:49 PM
From: hmaly  Read Replies (1) | Respond to of 1571873
 
Scumbia ...Re<<The north pole is the coldest place in the Northern Hemisphere. If ice at the north pole shows no signs of having melted over 50,000,000 years and it is melted now, the only reasonable conclusion which can be reached is that polar temperatures are at their warmest in 50,000,000 years. <<<<<

Scumbia, I think it would be hard to believe that the polar temperature is close to 32 degrees, as I think it is normally 30 to 50 below there. Surely we would have noticed such a huge increase before this. I can only believe that it is from ocean currents combined with a possible heat source such as underwater volcano, which could easily melt a spot through polar cap. I also believe I read that the Polaris in approx. 1970 came up through the ice cap near north pole; so having a thin ice cap at points is normal rather than once in a 50.000,000 yr. thing. Maybe it has never happened there before, but maybe the volcano didn't either. No flames, just guessing.