Kathy Bryson<p>remember those stories about how there was a whole world living underground?</p><p> Turns Out, The <a href="https://mastodon.social/tags/Antarctic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Antarctic</span></a> Ice Sheet Is Hiding An Abundant <a href="https://mastodon.social/tags/Ecosystem" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Ecosystem</span></a> <a href="https://buff.ly/1tO4TUc" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">buff.ly/1tO4TUc</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nature</span></a> <a href="https://mastodon.social/tags/environment" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>environment</span></a> <a href="https://mastodon.social/tags/icesheets" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>icesheets</span></a> <a href="https://mastodon.social/tags/research" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>research</span></a> <a href="https://mastodon.social/tags/life" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>life</span></a></p>
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Niu et al investigate the growth of the Eurasian Ice Sheets from the MIS 3 minimum (38,000 years ago) using a coupled ice sheet, atmosphere and ocean model. They find the rapid growth of the ice sheets happened only when there was a weak AMOC.
Ancient seafloor spreading 15 million years ago caused sea levels to plummet | Live Science…
Today we are witnessing rapid global #sealevelrise attributable mostly to #climate change-driven melting of #icesheets and #glaciers and thermal expansion of seawater. However, sea level change also occurs over millions of years as geological processes gradually reshape Earth's ocean basins... #geology #geologicaltime
for much deliberation · Ancient seafloor spreading 15 million years ago caused sea levels to plummet | Live Science…Today we are witnessing rapid global #sealevelrise attributable mostly to #climate change-driven melting of #icesheets and #glaciers and thermal expansion of seawater. However, sea level change als…
Belko et al investigate the glacial landforms on the two troughs on the continental shelf off the northern coast of the Cumberland Peninsula on eastern Baffin Island. Their goal was to determine the limit of the Laurentide Ice Sheet at the Last Glacial Maximum (LGM).
The results show that the maximum ice extent of the more easterly Merchants Trough failed to reach the shelf edge. The more westerly Broughton Trough almost reached the edge. The morphology of the trough prevented the ice from fully advancing to the edge, unlike areas further north.
They conclude that the eastern part of the Cumberland Peninsula was covered by alpine glaciers during the LGM, while further west, a more extensive Penny Ice Cap caused ice to flow over the mountains and advance towards the shelf edge.
The drainage of the Laurentide ice sheet by the Cumberland Sound Ice Stream likely prevented ice to overtop the mountains on the eastern Cumberland Peninsula.
Sousa et al investigate the radiogenic isotope signature of sediments from a core south of Greenland dating to the mid-Pliocene Warm Period (~3 million years ago). Variations in isotopes provide an indication of the size of the Greenland Ice Sheet as eroded material was transported to the ocean.
The results indicate that the Greenland Ice Sheet grew and retreated with a ~40,000 year period, indicating a strong role for obliquity in controlling glaciation.
The results also indicate that through the studied interval (3-3.2 million years ago), there was a gradual increase in the size of the ice sheet with each subsequent glaciation. Is this a sign of the regolith hypothesis in action?
Scientists identify tipping point for Greenland’s ice sheet — and it’s not far off | Live Science…
Greenland's ice sheet has been losing a staggering amount of ice at an accelerating rate. A tipping point could come by the turn of the next century... #greenland #icesheets #climatechange #globalwarming
for much deliberation · Scientists identify tipping point for Greenland’s ice sheet — and it’s not far off | Live Science…Greenland’s ice sheet has been losing a staggering amount of ice at an accelerating rate. A tipping point could come by the turn of the next century… #greenland #icesheets #climatechang…
Livescience.com: Alaska’s ice is melting in front of our eyes, staggering satellite shots show…
Unusual weather patterns and climate change have been driving stark changes in the northwestern state. Now, new satellite images show the extent of this transformation... #cimatechange #alaska #icesheets #globalwarming #glaciology
for much deliberation · Livescience.com: Alaska’s ice is melting in front of our eyes, staggering satellite shots show…Unusual weather patterns and climate change have been driving stark changes in the northwestern state. Now, new satellite images show the extent of this transformation… #cimatechange #alaska …
Ice streams move due to tiny ice quakes: Dynamics of Greenland’s ice decrypted…
The great ice streams of the #Antarctic and #Greenland are like frozen rivers, carrying ice from the massive inland ice sheets to the sea... #icequakes #icesheets #sealevelrise
for much deliberation · Ice streams move due to tiny ice quakes: Dynamics of Greenland’s ice decrypted…The great ice streams of the #Antarctic and #Greenland are like frozen rivers, carrying ice from the massive inland ice sheets to the sea… #icequakes #icesheets #sealevelrise
The @H2020PROTECT project is now having it's final annual meeting. We have been working on this #Horizon 2020 project for 4.5 years, and there are some key recommendations in this policy briefing. It's worth reading the whole thing. #Cryosphere #IceSheets #SeaLevelRise
protect-slr.eu/policy-briefs/
Phys.org: How is Antarctica melting, exactly? Crucial details are beginning to come into focus…
The size of the #Antarctic ice sheet can be hard to comprehend. Two kilometers thick on average and covering nearly twice the area of Australia, the ice sheet holds enough freshwater to raise global sea levels by 58 meters... #climatechange #sealevelrise #icesheets
for much deliberation · Phys.org: How is Antarctica melting, exactly? Crucial details are beginning to come into focus…The size of the #Antarctic ice sheet can be hard to comprehend. Two kilometers thick on average and covering nearly twice the area of Australia, the ice sheet holds enough freshwater to raise globa…
Phys.org: How is Antarctica melting, exactly? Crucial details are beginning to come into focus…
The size of the #Antarctic ice sheet can be hard to comprehend. Two kilometers thick on average and covering nearly twice the area of Australia, the ice sheet holds enough freshwater to raise global sea levels by 58 meters... #climatechange #sealevelrise #icesheets
for much deliberation · Phys.org: How is Antarctica melting, exactly? Crucial details are beginning to come into focus…The size of the #Antarctic ice sheet can be hard to comprehend. Two kilometers thick on average and covering nearly twice the area of Australia, the ice sheet holds enough freshwater to raise globa…
Melting #Antarctic ice sheets may be causing larger volcanic eruptions
During #deglaciation, melting of kilometers-thick #IceSheets reduces the mass weighing down the land, which leads to #uplift. This alters the pressure inside #magma chambers lying below the Earth's surface, causing #volcanic eruptions.
https://phys.org/news/2025-01-antarctic-ice-sheets-larger-volcanic.html
Antarctica’s melting ice may awaken hidden volcanoes, study warns #Antarctica #Volcanoes #ClimateCrisis #icesheets https://www.independent.co.uk/climate-change/news/antarctic-ice-sheet-melting-volcanoes-b2674892.html
The Independent · Antarctica’s melting ice may awaken hidden volcanoes, study warns
Can we survive if the world's glaciers melt?
Deutsche Welle has made a short film that tries to answer the question: can we survive without glaciers? The answer is just about.
Casablanca and Dubai would be flooded. Mumbai would be under water. But humanity could find alternatives to #glaciers as water stores (more dams) and rivers as transport routes (more railways).
South-to-north migration would accelerate and expanding populations would have to co-exist on a shrunken landmass, but at 2 degrees of warming above pre-industrial levels people – and some #glaciers – would survive. At 5-8 degrees all #glaciation would be gone, including the #Greenland and #Antarctic #IceSheets. Then sea levels would rise by 50 metres.
Not coincidentally, the International Court of Justice ends two weeks’ deliberation tomorrow on the obligations of states to fight #ClimateChange. It will send an advisory opinion to the UN next year.
https://www.dw.com/en/can-we-survive-if-the-worlds-glaciers-melt/video-70981925
dw.comCan we survive if the world's glaciers melt? – DW – 12/09/2024If all the world's glaciers melted, what would that mean for nature and for human civilization? Some scientists in Switzerland say nature itself would survive, but for humans it could be a catastrophe
State of the Cryosphere Report 2024: the report notes a growing scientific consensus that melting Greenland and Antarctic ice sheets, among other factors, may be slowing important ocean currents at both poles, with potentially dire consequences for a much colder northern Europe and greater sea-level rise along the U.S. East Coast. #climatechange #icemelt #icesheets #sealevelrise https://iccinet.org/statecryo24/
State of the Cryosphere Report 2024: the report notes a growing scientific consensus that melting Greenland and Antarctic ice sheets, among other factors, may be slowing important ocean currents at both poles, with potentially dire consequences for a much colder northern Europe and greater sea-level rise along the U.S. East Coast. #climatechange #icemelt #icesheets #sealevelrise https://iccinet.org/statecryo24/
Hmmm, guess I'll have to strike Boston off my list of places I'd like to move to...
Greenland ice sheet’s last meltdown and a glimpse into a warmer future, by Paul Bierman, Halley Mastro, originally published by The Conversation August 6, 2024
#IceSheets
#Greenland
#CoastalCities
#ClimateCrisis
#SeaLevelRise
Science: Doomsday may be delayed at Antarctica’s most vulnerable glacier…
Antarctica’s Thwaites Glacier isn’t called the Doomsday Glacier for nothing. Were the Florida-size ice sheet to melt away, it could raise global sea levels by 65 centimeter... science.org #antarctica #climatechange #climate #thwaitesglacier #icesheets
for much deliberation · Science: Doomsday may be delayed at Antarctica’s most vulnerable glacier…Antarctica’s Thwaites Glacier isn’t called the Doomsday Glacier for nothing. Were the Florida-size ice sheet to melt away, it could raise global sea levels by 65 centimeter… science.org #anta…