Re: [asa]

From: Murray Hogg <>
Date: Thu Apr 30 2009 - 18:44:01 EDT

Hi Burgy,

I often wonder over those rising sea level figures.

I used to think the larger values were utter bunk on the basis that ice is largely submerged - so melting it wouldn't effect the sea levels all THAT much.

But then the penny dropped - the Antarctic ice ISN'T floating, it's sitting on land! Funny what you can overlook!

Do you know anywhere where the assumptions and calculations are laid out as I'd be curious to see them.


John Burgeson (ASA member) wrote:
> I just posted the following two comments on in the
> "Hit the Brakes" thread. They are somewhere after post #144.
> Burgy
> John Burgeson Says:
> 30 April 2009 at 5:07 PM
> In all this discussion, Id like to explore one data point.
> Question: When/if the polar ice caps completely melt, how much higher
> will the oceans be?
> Paul Blanchen and three other researchers did an analysis of Xcerat
> Park in Mexico. The report (and an abstract and a short interview with
> Blanchen) are in NATURE, pages 803 and 881, V458 (4/16/09).
> Their focus was the sea rise change circa 121,000 years ago. They
> measured that change (presumably when all polar ice had melted) at
> about 7 feet.
> Elsewhere on this site Ive seen statements that the rise might be as
> much as 35 feet. 7 feet MIGHT be sustainable; 35 feet clearly is not.
> Does 7 feet seem reasonably accurate, or will it be more (assuming the
> polar ice completely melts)?
> John Burgeson Says: Your comment is awaiting moderation.
> 30 April 2009 at 5:09 PM
> On another part of the puzzle. John Holdren is quoted in the same
> issue of NATURE (on page 819) as saying a $100 tax on carbon will
> cause the price of gas to rise by 30c. That sounds affordable.
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Received on Thu Apr 30 18:44:15 2009

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