Tag: ice sheets
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Scientists Map a Hidden, Mile-Deep World Under Antarctica’s Ice
Overview: A Secret Landscape Beneath the Ice Scientists have unveiled a striking new view of Antarctica: a vast, largely hidden topography lying miles beneath the ice. By creating a high-resolution map of the continental subsurface, researchers have uncovered an underground landscape that includes hidden hills, ridges, and even entire mountain ranges. This discovery challenges long-held…
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Antarctica’s East Ice Sheet Collapse 9,000 Years Ago: A Warning From the Past
New Insights Into East Antarctica’s Ancient Collapse A recent study has shed light on a remarkable event in Earth’s recent geological past: a portion of Antarctica’s eastern ice sheet collapsed rapidly about 9,000 years ago. Researchers say the trigger was not a global warming spike alone, but sustained warming of the southern ocean waters that…
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Lessons from the Past: What Antarctica’s 9,000-Year Collapse Tells Us About Today’s Climate
Understanding an Ancient Collapse About 9,000 years ago, parts of Antarctica’s eastern ice sheet collapsed in a remarkably rapid event, driven by warmer ocean waters penetrating the ice shelves. This ancient episode occurred under climate conditions that paleoclimatologists now compare to certain patterns seen today: rising ocean temperatures, changing wind patterns, and a shift in…
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North American Ice Sheets Triggered Most Sea-Level Rise Before 8,000–9,000 Years Ago
New Evidence Reframes the End of the Last Ice Age Groundbreaking findings published in Nature Geoscience reveal that melting ice sheets in North America played a far larger role in global sea-level rise during the final stages of the last ice age than previously thought. By examining ancient sediments and integrating a global data set,…
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North American Ice Sheets Triggered Most of the End-Ice-Age Sea-Level Rise, Study Finds
Breakthrough reshapes our view of last‑ice‑age sea level A Tulane University-led study has overturned long‑standing assumptions about the forces behind the dramatic global sea‑level rise that marked the end of the last ice age. The research, published in Nature Geoscience, finds that melting ice sheets in North America contributed far more to sea‑level rise between…