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Iceberg

All articles tagged with #iceberg

Antarctic Megaberg A23a Nears Complete Breakup in Warmer Atlantic
science1 month ago

Antarctic Megaberg A23a Nears Complete Breakup in Warmer Atlantic

A Copernicus Sentinel-2 image shows A23a, once the world’s largest iceberg that calved from the Filchner-Ronne Ice Shelf in 1986, continuing to disintegrate as it drifts into warmer South Atlantic waters. By December 2025 it lies about 150 km northwest of South Georgia, has shed roughly three-quarters of its surface to about 1,000 sq km, and meltwater ponds indicate rapid breakup as it heads toward further disintegration in warmer seas.

Antarctica’s A23a Iceberg Fades into Blue Patches as Four-Decade Voyage Ends
planet-earth1 month ago

Antarctica’s A23a Iceberg Fades into Blue Patches as Four-Decade Voyage Ends

Satellite imagery shows A23a, once the world’s largest iceberg, shrinking and turning into a bright blue, patchy “blue mush” as it disintegrates after roughly 40 years at sea. Born from Antarctica’s Filchner-Ronne Ice Shelf in 1986, it became stuck on the seafloor, broke away in 2020, drifted through currents toward South Georgia, and then broke apart in 2024–2025. The blue striations are melt ponds forming in cracks and ponds on the surface, a sign of rapid disintegration that may already be fading in newer photos; with A23a waning, D15A is cited as the current largest iceberg.

"Trillion-Tonne Iceberg A23a Spins in Spectacular 360° Twirl as it Drifts from Antarctica"
nature2 years ago

"Trillion-Tonne Iceberg A23a Spins in Spectacular 360° Twirl as it Drifts from Antarctica"

The world's largest iceberg, A23a, has been observed doing a 360° spin off the coast of Antarctica as it makes its way through "Iceberg Alley". Measuring 400 meters in height and covering an area of 4,000 square kilometers, the iceberg was captured twirling by NASA satellites. Scientists are studying its impact on the polar region's ecosystem and carbon balance, collecting seawater samples to understand its influence. A23a was calved in 1986 and recently became mobile after being grounded for 40 years, and it briefly lost its title as the largest iceberg in 2021.

"Trillion-tonne Iceberg A23a Completes Perfect Spin in Antarctica"
environment2 years ago

"Trillion-tonne Iceberg A23a Completes Perfect Spin in Antarctica"

The world's largest iceberg, A23a, has completed a pirouette as it moves towards the Southern Ocean, spinning more than 360 degrees just north of the Antarctic Peninsula. The iceberg, about the size of Greater London, is gradually eroding and melting due to warmer waters as it travels north at a rate of about 30 miles per day. A23a, which had been grounded for 30 years, is being swept along 'iceberg alley' and is currently the largest iceberg in the world, but it is expected to eventually fragment. If it reaches South Georgia, it could potentially disrupt wildlife feeding routines.

"Massive Iceberg A23a Spins and Moves After Breaking Free from Antarctica"
science-and-environment2 years ago

"Massive Iceberg A23a Spins and Moves After Breaking Free from Antarctica"

The world's largest iceberg, A23a, roughly the size of Delaware, has begun moving after being stuck on the ocean floor for four decades, and researchers have observed it spinning in a circle. Measuring about 1,500 square miles, the iceberg is on a journey into warmer waters, and its movements are being closely monitored by scientists. This event highlights the interconnectedness of our global environment and the urgency to understand and protect our planet's polar regions in the face of climate change.

"Trillion-tonne Iceberg A23a Breaks Free and Spins, Alarming Scientists"
science2 years ago

"Trillion-tonne Iceberg A23a Breaks Free and Spins, Alarming Scientists"

The trillion-tonne iceberg A23a, the world's largest, has completed a spin near the Antarctic Peninsula and is expected to be swept away into the Southern Ocean soon. A23a, which broke off from the Antarctic coast in 1986, has been slowly drifting northward and is now poised to enter the powerful Antarctic Circumpolar Current. Recent images show the iceberg wasting at its edges, with waves cutting into its walls and forming smaller "bergy bits" and "growlers" as it journeys into rougher and warmer waters.

"Massive Iceberg A23a Spins and Drifts Away from Antarctica"
environment2 years ago

"Massive Iceberg A23a Spins and Drifts Away from Antarctica"

The world's largest iceberg, A23a, has completed a rotation near the Antarctic Peninsula and is anticipated to be carried away into the Southern Ocean by a strong current. Weighing nearly a trillion tonnes and covering an area more than twice the size of Greater London, the iceberg's movement is being closely monitored in relation to climate change and its potential impact on the environment.