Icebergs

[phkrause]

? Megaberg on the move after 30+ years

This satellite image shows the A23a iceberg (center) moving through the sea near Antarctica Nov. 15. Satellite image ©2023 Maxar Technologies via AP The world's second-largest iceberg is drifting beyond Antarctic waters after running aground in 1986. The iceberg, A23a, split from the Antarctic's Filchner Ice Shelf in 1986. It became stuck to the ocean floor and remained for many years in the Weddell Sea, the British Antarctic Survey says (via AP). The megaberg is three times the size of New York City and more than twice the size of Greater London, measuring around 1,500 square miles. Andrew Fleming, a remote sensing expert from the British Antarctic Survey, told the BBC the iceberg has been drifting for the past year — and now appears to be picking up speed and moving past the northern tip of the Antarctic Peninsula, helped by wind and ocean currents. ? What's happening: "I asked a couple of colleagues about this, wondering if there was any possible change in shelf water temperatures that might have provoked it, but the consensus is the time had just come," Fleming said. "It was grounded since 1986 but eventually it was going to decrease [in size] sufficiently to lose grip and start moving. I spotted first movement back in 2020." See a map ... Go deeper: Using AI to track icebergs.

[phkrause]

One of the world’s largest icebergs is drifting beyond Antarctic waters after it was grounded for 3 decades

LONDON (AP) — One of the world’s largest icebergs is drifting beyond Antarctic waters, after being grounded for more than three decades, according to the British Antarctic Survey.

https://apnews.com/article/antarctica-iceberg-a23a-drifting-south-georgia-b6fcfc99939659aaa26fdba0b3e17f1f?