Jakobshavn Isbrae: The highly effective brakes on the Greenland Glacier

From the BBC

By Jonathan Amos BBC Scientific Correspondent 14 Could 2019

Copernicus Sentinel knowledge (2019) / Esa Picture caption Jakobshavn in April this yr: The glacier is a vital drainage channel for the Greenland icecap

European satellites have detailed the abrupt change in conduct of one of many largest glaciers in Greenland.

Within the 2000s, Jakobshavn Isbrae was the quickest ice stream on the island, touring 17 km per yr.

As he headed for the ocean, his entrance finish additionally pulled out and thinned, reaching heights of as much as 20 m per yr.

However now all the things is altering. Jakobshavn travels rather more slowly and his trunk has even began to thicken and lengthen.

"It's a whole reversal of conduct and it was not deliberate," mentioned Dr. Anna Hogg from the College of Leeds and the British Middle for Polar Observing and Modeling (CPOM).

"The query is now: what’s the subsequent step for Jakobshavn? Is it only a break, or is it a dynamic thinning cease that we've seen earlier than? "

Picture Copyright CPOM – A. E. Hogg Picture Caption Peak Change: There was a marked change after 2013

The glacier is positioned in southwestern Greenland. It’s well-known for its spectacular manufacturing of icebergs – colossal blocks calve from its terminus and drift alongside its fjord, into Disko Bay, then into the North Atlantic.

Greater than possible, it’s Jakobshavn that spawned the iceberg that sank the Titanic.

The scientists' curiosity within the glacier lies in its drainage function for the Greenland icecap. It’s an important channel for the export of ice that may then increase the ocean degree globally.

Learn the complete story right here.

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