Tag

Glaciers

All articles tagged with #glaciers

science1 month ago•4 min saved

Patagonian Icefield's Tyndall Glacier Calving Sparks New Icebergs

NASA's Earth Observatory showcases an ISS image of Tyndall Glacier in southern Chile, part of the Southern Patagonian Icefield, with icebergs drifting on Lago Geikie after recent calving. The glacier has shrunk since the Little Ice Age; Lago Geikie formed around 1940 as the ice retreated. Tyndall has lost about 2.2 km of length since Nov 2022 due to thinning and multiple calving events, including a major one in 2023. In May 2026 the front stood roughly 30–40 m above the lake, and scientists expect more iceberg production this fall as crevasses persist. Astronaut photography enables monitoring of remote glaciers like Tyndall and helps track ongoing climate-related changes.

via NASA Science (.gov)|

#climate-change #earth-observation #glaciers

archaeology1 month ago•43 min saved

Stonehenge's Altar Stone: a Neolithic trek across Britain

A Curtin University–led study links Stonehenge’s Altar Stone to Caithness, Scotland, using mineral fingerprints and ice‑sheet modeling to show glaciers likely played only a limited role; the six‑ton block would have required a staged, human‑led journey across land and waterways to Salisbury Plain, highlighting coordinated Neolithic transport across regions rather than a purely glacial transfer.

via Archaeology News Online Magazine|

#altar-stone #archaeology #glaciers

science1 month ago•2 min saved

Glaciers Likely Carried Stonehenge’s Altar Stone From Scotland

Researchers propose the Altar Stone originated in northeast Scotland and was carried by glaciers as far as Dogger Bank during Britain's last Ice Age, with Neolithic people then moving it the rest of the way to Stonehenge, implying staged, highly organized cooperation rather than a direct glacial haul.

via BBC Science Focus Magazine|

#altar-stone #doggerland #glaciers

science1 month ago•63 min saved

Doomsday Glacier teeters as its last ice shelf breaks this year

Antarctica’s Thwaites Glacier, nicknamed the Doomsday Glacier, is poised to lose its eastern ice shelf this year, removing a key stabilizing buttress and likely accelerating ice loss. A full collapse could lift global sea levels by about 26 inches (65 cm), intensifying coastal flooding even if emissions drop, and potentially triggering further instability in West Antarctica. The melt is driven by warm deep ocean water entering the region and changes in Southern Ocean winds, a process linked to human-caused climate change. While models vary on exact timing, scientists agree the glacier’s retreat will have long-term, wide-reaching consequences for sea level rise.

via Live Science|

#antarctica #climate-change #glaciers

science1 month ago•10 min saved

Warming Oceans and Ice Melt Confirmed as Primary Drivers of Global Sea-Level Rise

A new Science Advances study shows global mean sea level has risen about 2.06 mm/year since 1960 and accelerated to 3.94 mm/year from 2005–2023, with ocean warming accounting for about 43% of the rise and ice melt from glaciers (27%), Greenland (15%), and Antarctica (12%) becoming larger contributors over time; corrections to satellite data and tide gauges resolve a long-standing measurement gap, and scientists warn sea level will keep rising for centuries even if emissions stabilize.

via SciTechDaily|

#antarctic-ice-sheet #glaciers #greenland-ice-sheet

environment1 month ago•6 min saved

Ocean Warming and Ice Melt Push Global Sea Levels Higher, Study Finds

Global sea levels are rising at an accelerating pace driven mainly by warming oceans expanding water, with glaciers and ice sheets contributing increasingly; improved satellite and tide-gauge measurements close a long-standing discrepancy between observations and known causes, and scientists warn sea levels will keep rising for centuries due to climate inertia.

via ScienceDaily|

#environment #glaciers #ice-sheets

science2 months ago•4 min saved

Alaska's Tracy Arm megatsunami: second-tallest on record signals growing glacier-driven risk

A landslide in Tracy Arm Fjord, Alaska, dislodged 64 million cubic meters of rock and generated a megatsunami almost 500 meters high—the second-tallest ever recorded, after a 1958 Alaska event. Scientists link glacier melt from climate change to more frequent collapses, warn that such hazards may be increasing, and call for wider monitoring as cruise operators reassess safety around Alaska’s fjords.

via BBC|

#alaska #climate-change #glaciers

environment2 months ago•3 min saved

Arctic Heatwave Signals Europe’s Record-Breaking 2025 Summer

A Nordic heatwave helped drive Europe’s 2025 summer into the record books, with more than 95% of the continent baking under extreme heat, 21 days above 30C in Scandinavia, record sea-surface temperatures, rapid glacier loss, and widespread wildfires, fueling calls for stronger emissions cuts and proactive climate adaptation.

via The Guardian|

#climate-change #environment #europe

space2 months ago•96 min saved

Tiny Arctic lake slices Canada's oldest ice cap, seen from space

A 2010 NASA Earth Observatory image shows Gee Lake bending across the snowy rim of the Barnes Ice Cap on Baffin Island, the last remnant of Canada’s ancient Laurentide Ice Sheet. The roughly 3.2-kilometer lake sits at the edge of a glacier up to 500 meters thick, where meltwater has carved grooves that appear as ridges across the ice. The Barnes Ice Cap, exposed in this scene as snow-free at the edge, dates back about 20,000 years and is shrinking like other Arctic glaciers due to warming temperatures; a 2017 study estimated most of the ice could disappear within about 300 years. The image illustrates how small melt lakes and glacial dynamics shape this ancient landscape and how the Laurentide legacy continues to influence oceans and sea-level rebound today.

via Live Science|

#barnes-ice-cap #climate-change #earth-observation

world3 months ago•3 min saved

Argentina loosens glacier protections to empower provincial mining

Argentina's Congress approved a reform to the 2010 Glacier Law that shifts protection of glacier regions from the national Ianigla agency to provincial authorities, making it easier to mine in glacier areas; supporters say it enables development, while opponents warn it endangers water resources since glaciers feed 36 river basins across 12 provinces and about seven million people. The reform keeps glaciers in the national inventory until provinces prove they are not strategic water reserves.

via BBC|

#argentina #environment #glaciers

environment4 months ago•7 min saved

Unprecedented Rapid Collapse of Antarctica's Hektoria Glacier Spurs Climate Alarm

Antarctica’s Hektoria Glacier retreated 8 km in two months, with about half of it collapsing—the fastest such event on record—serving as clear real-time evidence that climate warming is accelerating; scientists warn this could hasten sea‑level rise, signal larger ice losses across the continent, and underscore the need for rapid cuts in greenhouse gas emissions, as reported by ScienceDaily, the Potsdam Institute, and related scientific meetings.

via CounterPunch.org|

#antarctica #climate-change #environment

science4 months ago•2 min saved

Antarctica's Gravity Hole Deepens as Ice Sheets Expand Over Millions of Years

A new study maps Antarctica’s gravity hole and shows it has strengthened over tens of millions of years, coinciding with major climate shifts and glacier growth. Using global earthquake data to 'scan' the planet’s interior, researchers aim to understand how interior gravitational changes might influence ice-sheet dynamics and sea levels, though a direct causal link isn’t yet proven.

via Futurism|

#antarctica #climate-change #glaciers

environment5 months ago•5 min saved

Icefall Under the Midnight Sun: A Close Call Filming Greenland's Store Glacier

A documentary crew filming Store Glacier in Western Greenland endure a weeks-long delay and a perilous ice‑fall sequence as massive chunks collapse, nearly striking their helicopter and underscoring the Arctic’s raw power and rapid change.

via BBC Wildlife Magazine|

#arctic #calving #documentary

science5 months ago•35 min saved

Antarctica’s buried terrain mapped in unprecedented detail, reshaping sea‑level forecasts

Scientists mapped Antarctica’s subglacial terrain in unprecedented detail, revealing tens of thousands of previously unknown hills and ridges and a deep channel in the Maud Subglacial Basin about 50 meters deep, 6 kilometers wide, and 400 kilometers long; the work, published in Science and led by Helen Ockenden of Grenoble Alpes University, helps explain how buried features steer glacier flow and retreat and will refine predictions of future sea-level rise.

via Yahoo|

#antarctica #glaciers #maud-subglacial-basin

science5 months ago•2 min saved

Satellites Reveal a Hidden Landscape Under Antarctica’s Ice

Scientists released the most detailed map yet of Antarctica’s subglacial terrain by combining high-resolution satellite surface data with glacier-flow physics, uncovering tens of thousands of previously unknown hills and ridges (and glimpses of mountains and canyons) beneath the ice. Published in Science, the work provides a new tool to forecast how the ice may respond to climate change and influence sea-level rise, while noting that the results rely on assumptions and require further observations.

via Gizmodo|

#antarctica #climate-change #glaciers