I don't think it's the ice in the water that will raise sea levels; It's all the ice that isn't in the water (i.e. Green land and Antarctica). Also if the sea ice is melting it also likely the landlocked ice is also melting and thus adding more water to the "tub".<div>
<br clear="all">---- Steve (KZ6LSD)<br>
<br><br><div class="gmail_quote">On Wed, Aug 29, 2012 at 9:47 AM, Joe Killian <span dir="ltr"><<a href="mailto:kaa-ajk@sonic.net" target="_blank">kaa-ajk@sonic.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div> Classic trick high school question:<br>
Fill a glass with ice, add water to the brim (top of ice will
float higher). Let it melt. Does it overflow?<br>
Answer: No. The weight (mass) of water displaced by the
floating ice is the same as the weight of all the ice, which is
also the same volume of the displaced water once melted.<br>
So melting sea ice doesn't raise (or lower) sea level.<br>
The fresh water added to the ocean, however, may well accelerate
the feared effect of the melting Greenland ice adding fresh water
to the North Atlantic and potentially (inevitably?) changing the
course of the Gulf Stream. Whereupon northern Europe's climate
becomes more like Siberia's climate.<br>
Hang on....<br>
Joe<br>
<br>
<br>
<br>
On 8/29/2012 8:32 AM, Alan Abrams wrote:<br>
</div>
<blockquote type="cite">if salt water is more dense than fresh--then when the
ice pack melts, does this not result in a rise in sea level? No,
wait, ice contracts when it melts. But most of a floating mass of
ice is submerged, and the volume of the exposed mass is equal to
the increase in volume as a result of freezing...<br>
<br>
...ouch. my head hurts.<br>
<br>
-AA<br>
<br clear="all">
<font><span style="color:rgb(102,0,0)">Alan Abrams</span><b style="color:rgb(102,0,0)"><br>
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