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Ice Sheet Collapse

All articles tagged with #ice sheet collapse

science20 days ago•4 min saved

Antarctic Ice History Offers Insights for Today's Climate Challenges

About 9,000 years ago, a rapid collapse of part of Antarctica's East Antarctic Ice Sheet occurred due to warm ocean currents, leading to significant ice loss and potential implications for future sea level rise as modern warming may trigger similar events. The study highlights the role of warm deep water and meltwater feedbacks in accelerating ice sheet disintegration, emphasizing the importance of understanding ocean-ice interactions in predicting future sea level changes.

via Earth.com|

#antarctica #climate-change #holocene

science2 months ago•4 min saved

Scientists Warn of Rapid, Irreversible Antarctic Ice Collapse and Global Risks

New research warns that rapid, interconnected changes in Antarctica's ice, oceans, and ecosystems could trigger irreversible global impacts, including a potential collapse of the West Antarctic Ice Sheet leading to over three meters of sea level rise, unless greenhouse gas emissions are significantly reduced.

via SciTechDaily|

#antarctica #climate-change #ecosystem-impact

earth-science1 year ago•4 min saved

"Uncovering the Physics of Ice Sheet Collapse: Record-breaking 80-mph Glacier Fracture Speed"

Researchers have observed the fastest-known large-scale breakage along an Antarctic ice shelf, with a 6.5-mile crack forming in about five and a half minutes, opening at about 80 miles per hour. This study sheds light on the physics of ice sheet collapse, demonstrating the role of seawater in controlling the speed of ice shelf breakage and influencing stability. Understanding these processes is crucial for improving large-scale ice sheet models and projections of future sea-level rise.

via Phys.org|

#antarctic-ice-shelf #earth-science #glacier-fracture

environment2 years ago•5 min saved

"Antarctic Octopus Unveils Startling Clues to West Antarctica's Demise"

Turquet's octopuses, a species found in the Southern Ocean, have provided new insights into the collapse of the West Antarctic Ice Sheet. Genetic analysis of octopuses from different regions revealed that they were genetically similar despite being physically separated by the ice sheet. This suggests that the octopuses migrated between the seas after the ice sheet melted during the Last Interglacial period, which occurred about 125,000 years ago. The findings raise concerns about the stability of the West Antarctic Ice Sheet in the face of current global warming, as temperatures today are already similar to those during the Last Interglacial period. If the ice sheet were to collapse, it could lead to a significant rise in global sea levels.

via The Washington Post|

#climate-change #environment #genetic-analysis

environment2 years ago•3 min saved

"Antarctic Octopus DNA Uncovers Imminent Ice Sheet Collapse"

A study published in Science reveals that the DNA of Antarctic octopuses indicates an ice-free corridor during the Last Interglacial period, around 125,000 years ago, when global temperatures were similar to today. The findings suggest that the West Antarctic Ice Sheet (WAIS) is closer to collapse than previously thought, potentially leading to a long-term sea level rise of 3.3-5 meters. The study highlights the urgency of holding human-caused warming to the 1.5 degrees Celsius target of the Paris Agreement to prevent catastrophic consequences.

via Phys.org|

#antarctic #climate-change #environment