[ExI] Antarctica's 'Doomsday Glacier' close to tipping point, unmanned sub reveals

[Darin Sunley]

"contributing to a 4% rise in global sea levels since that time"

I am deeply suspicious of this number, and of the entire cognitive edifice
underlying it, and therefore anything else that cognitive edifice has
produced.

4% of what, exactly? The ocean averages more than 100 meters deep, and we
sure as heck have not seen a 4 meter rise in global sea levels since the
80s.

On Fri, Apr 16, 2021 at 5:49 AM John Grigg via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> "Our observations show warm water impinging from all sides on pinning
> points critical to ice-shelf stability, a scenario that may lead to
> unpinning and retreat," the study authors wrote in the paper, which was
> published April 9 in the journal *Scientific Advances*
> <https://advances.sciencemag.org/content/7/15/eabd7254>. In other words,
> the entire ice-shelf could get detached and then flow into the ocean.
>
> As one of Antarctica's fastest melting glaciers, Thwaites Glacier,
> cheerfully nicknamed the "Doomsday Glacier," has lost an estimated 595
> billion tons (540 billion metric tons) of ice since the 1980s, contributing
> to a 4% rise in global sea levels since that time. The glacier acts like a
> cork in a wine bottle, stopping the rest of the ice in the region from
> flowing into the sea, so Thwaites Glacier's collapse could potentially take
> the rest of the West Antarctic Ice Sheet with it, causing a 10-foot (3
> meter) rise in global sea levels".
> https://www.livescience.com/doomsday-glacier-close-to-tipping-point.html
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