Fri. Aug 23rd, 2019

Jakobshavn Isbrae: The mighty glacier of Greenland slows down all of a sudden

From the BBC

By Jonathan Amos BBC Scientific Correspondent, Could 14, 2019

Picture copyright Copernicus Sentinel information (2019) / Esa Picture caption Jakobshavn in April this 12 months: The glacier is a crucial draining stream for l & # 39; Greenland ice sheet

European satellites have detailed the abrupt change in habits of considered one of Greenland's largest glaciers.

Within the 2000s, Jakobshavn Isbrae was the quickest ice stream on the island, touring 17 km a 12 months.

As he headed for the ocean, his entrance finish additionally retreated and thinned, with a peak of as much as 20 m per 12 months.

However now every part adjustments. Jakobshavn travels far more slowly and his trunk has even began to thicken and lengthen.

"This can be a full reversal of habits and it was not deliberate," mentioned Dr. Anna Hogg of the College of Leeds and the UK Polar Observing and Modeling Heart (CPOM).

"The query now’s: 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? "

Copyright on CPOM photographs – A. E. Hogg Picture caption Top change: there was a marked change after 2013

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

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

The scientists' curiosity within the glacier lies in its function as a drainage channel for the Greenland icecap. It’s a necessary channel for the export of ice which might then elevate the ocean stage.

Learn the complete story right here.

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