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

#EarthScience

Longer #SnowballEarth deglaciation could have driven multiple phases of #SeaLevelRise and fall https://phys.org/news/2024-12-longer-snowball-earth-deglaciation-driven.html

Melting the #Marinoan Snowball Earth: The impact of #deglaciation duration on the sea-level history of continental margins. By Freya Morris et al. https://www.sciencedirect.com/science/article/pii/S0012821X24005648

"The #Cryogenian period is believed to have played a significant role in the emergence of complex, multicellular life, with animal and algal-based ecosystems beginning to appear once the ice sheets retreated"

Winter is coming...

Peltier's ice model "ICE-7G_NA (VM7)" for 21ky of ice shields' history: https://www.atmosp.physics.utoronto.ca/~peltier/data.php

The song Jenny is from Game of Thrones, S8, E2, where the character Pod sings it for Tyrion, Brienne, Bron, Jamie and others, on the eve of battle against the Army of the Dead.

#ClimateChange #LGM #deglaciation #GoT #GameOfThrones

A view of the lagoons formed by the #deglaciation of Mateo mountain in the Peruvian #Andes, #Peru, May 8, 2024. REUTERS/Angela Ponce

https://www.reuters.com/investigates/special-report/andes-climate-change-mountaineering/

#Peru
#glaciers
#ClimateChange
#GlobalWarming

Latest research on Glaciers decline is not good news, with implications for water supply for human consumption and agriculture, flood events and Sea Level Rise...

Researchers found 49% of glaciers would disappear under the most optimistic scenario of 1.5C of warming. If global heating continued under the current scenario of 2.7C of warming, losses would be more significant, with 68% of glaciers disappearing,

This will significantly contribute to sea level rise, threaten the supply of water of up to 2 billion people, and increase the risk of natural hazards such as flooding. The study looked at all glacial land ice except for Greenland and Antarctic ice sheets.

Study: Global glacier change in the 21st century: Every increase in temperature matters
https://www.science.org/doi/10.1126/science.abo1324

Guardian news story:
https://www.theguardian.com/environment/2023/jan/05/half-planets-glaciers-gone-2100-even-under-paris-15c-accord-data-finds

#Glaciers #climateCrisis #ClimateEmergency #Water #ClimateChange #SeaLevelRise #Anthropocene #DeGlaciation

Well this thread went in a direction I didn't expect. I'm not a #geomagnetism or indeed #geodesy specialist and the mechanism for #PolarWander proposed sounds implausible but not impossible.

Would be interested to hear what those who know more about this think though...

My suspicion would be that #deglaciation now is rather too small compared to vast changes in past but what do you think @pa1ejo ?

https://universeodon.com/@bps_artish/109590310604353371