AuthorTopic: Official Arctic Meltdown Thread  (Read 6986 times)

Offline RE

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Yet Another Giant Iceberg Has Broken Free From Antarctica
« Reply #60 on: September 25, 2017, 12:40:07 PM »
That's a BIG ice cube!  :o

RE

https://gizmodo.com/yet-another-giant-iceberg-has-broken-free-from-antarcti-1818729430

Yet Another Giant Iceberg Has Broken Free From Antarctica
George Dvorsky
Today 1:40pmFiled to: Earth sciences


Satellite image taken of the new iceberg on September 24, 2017. (Image: Sentinel1)

Satellite images taken this past weekend show a new 100-square-mile iceberg emerging from Antarcticaís Pine Island Glacier. The calving event did not come as a complete surprise, but itís a troubling sign with regards to future sea level rise.

Pine Island Glacier (PIG) is the fastest melting glacier in Antarcticaóone thatís responsible for a quarter of the frozen continentís ice loss, a whopping 45 billion tons of ice each year. Satellite images taken from September 23 to 24 show an open-water gap emerging between the ice shelf and the iceberg, which is about four times the size of Manhattan (103 square miles or 267 square km).

The new iceberg appears to be quite unstable, producing a batch of smaller icebergs as it slowly drifts out to sea. The new berg is not nearly as big as the one produced by the Antarctic Peninsulaís Larsen C ice shelf a few months agoóan enormous chunk of ice that measures about 2,240 square miles (5,800 square km).

On Saturday, satellite observation specialist Stef Lhermitte at Delft University of Technology in the Netherlands posted a Sentinel1 image of the new PIG iceberg.

Gizmodo contacted Christopher A. Shuman, a research scientist within the Cryospheric Sciences Laboratory at NASA Goddard Space Flight Center, who confirmed the break using the MODIS and Landsat 8 satellites.

The area drained by PIG encompasses approximately 10 percent of the West Antarctic Ice Sheet, making it a critically important geological feature in terms of its contribution to sea level rise. This is now the third major calving event produced by this ice stream in four years, the others happening in 2013 (252 square miles/652 sq km) and 2015 (225 square miles/582 sq km).

ďBut it isnít the size of the bergs that are the main issue,Ē Shuman told Gizmodo. ďIt is the overall progressive retreat of the ice front with calving losses in 2013, 2015, and 2017, which is pretty rapid retreat for any very large glacier especially one this far south in Antarctica. With the first big loss in 2001, this is not a good sign for sure.Ē To which he added: ďThis is not as large a loss as in 2013 but it is a further retreat from what was a pretty stable ice front in at the beginning of this century.Ē

Shuman also confirmed that the rifts are forming in the center of the glacier and extending out toward the edges. This means that the rifts are forming far inland, likely the result of warm ocean water rubbing against the base of the glacier. This may explain why the calving events are happening with increased frequency (the speed of the glacierís flow towards the sea is increasing, and itís now moving at about 2.5 miles (4 km) per year), and why PIG appears to be thinning (the rate of thinning has quadrupled since the mid 1990s). If this current rate of thinning continues, the entire main trunk of the glacier could be afloat in about 100 years.

The West Antarctic ice sheet is separated from the ocean by a series of large glaciers, PIG included. These glaciers are holding back tremendous volumes of ice, but as this recent calving event demonstrates, perhaps for not much longer.
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Offline azozeo

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Re: Official Arctic Meltdown Thread
« Reply #61 on: September 25, 2017, 01:15:08 PM »
I saw an article about this last week & didn't post it.
But yeah that big fucker is a free floater  :o

Ya' gotta' know some enterprising pigman will pop a flag on her
and start bottling designer H2O......

Next they'll be claiming wars between pigman corporations.
Like Nestle vs. Coke vs. Pepsi vs. Bud

"Get 'cher ICE COLD buuuud HERE !
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Offline azozeo

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2017-10-02 - As the permafrost continues melting in Alaska, burying the dead becomes a problem:
http://hisz.rsoe.hu/alertmap/database/index.php?pageid=event_desc&edis_id=CC-20171003-60045-USA
http://www.thebigwobble.org/2017/10/climate-change-is-thawing-yukon.html

Quote: "Climate change is thawing the Yukon-Kuskokwim Delta's permafrost, and it's doing more than cracking foundations, sinking roads and accelerating erosion. In villages like Kong, communities have stopped burying their dead because, as the permafrost melts, the oldest part of their cemetery is sinking. Digging graves in the soggy ground was just making it worse."
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Offline azozeo

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Satellites measuring Earthís melting ice sheets go dark
« Reply #63 on: November 03, 2017, 01:25:03 PM »
http://www.sciencemag.org/news/2017/09/satellites-measuring-earth-s-melting-ice-sheets-go-dark

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Offline azozeo

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Re: Official Arctic Meltdown Thread
« Reply #64 on: November 04, 2017, 07:52:26 AM »
2017-11-02 - Temps set to rise 20-30C above average in parts of the Arctic and Antarctica:
http://robertscribbler.com/2017/11/01/extreme-warming-at-the-poles-this-week-arctic-and-antarctic-temperatures-to-rise-to-20-30-c-above-average-in-some-locations/
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Offline azozeo

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Re: Official Arctic Meltdown Thread
« Reply #65 on: November 04, 2017, 07:53:48 AM »
2017-11-02 - Greenland melt speeds East Coast sea level rise:
http://www.fasterthanexpected.com/2017/10/31/greenland-melt-speeds-east-coast-sea-level-rise/
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Offline Surly1

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Re: Official Arctic Meltdown Thread
« Reply #66 on: November 04, 2017, 11:01:39 AM »
2017-11-02 - Greenland melt speeds East Coast sea level rise:
http://www.fasterthanexpected.com/2017/10/31/greenland-melt-speeds-east-coast-sea-level-rise/

Hits close to home for me.
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Offline azozeo

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Re: Official Arctic Meltdown Thread
« Reply #67 on: November 04, 2017, 12:12:48 PM »
2017-11-02 - Greenland melt speeds East Coast sea level rise:
http://www.fasterthanexpected.com/2017/10/31/greenland-melt-speeds-east-coast-sea-level-rise/

Hits close to home for me.

That coastal area has issues, to be sure.

It's a crap shoot as to goes down the drain 1st, Miami Beach or Va. / Md.
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Offline azozeo

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Re: Official Arctic Meltdown Thread
« Reply #68 on: June 23, 2018, 10:14:09 AM »
    June 21, 2018
Source:
    Colorado State University
Summary:
    An international team of researchers has found that the bedrock below the remote West Antarctic Ice Sheet is rising much more rapidly than previously thought, in response to ongoing ice melt.


https://www.sciencedaily.com/releases/2018/06/180621141119.htm

https://eurekalert.org/pub_releases/2018-06/osu-biw061418.php


I know exactly what you mean. Let me tell you why youíre here. Youíre here because you know something. What you know you canít explain, but you feel it. Youíve felt it your entire life, that thereís something wrong with the world.
You donít know what it is but its there, like a splinter in your mind

 

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