martes, 26 de septiembre de 2017

Another giant iceberg has broken free from Antarctica: Mass of ice FOUR TIMES the size of Manhattan separates from the Pine Island Glacier

Los científicos han detectado que se ha desprendido del glaciar Pine Island de la Antártida un iceberg de más de 266 kilómetros cuadrados; esto es, cuatro veces el tamaño de la isla de Manhattan, ubicada en Nueva York, Estados Unidos.

Según el medio británico Daily Mail, el calentamiento de las aguas alrededor del continente puede derretir los enormes bloques de hielo desde abajo, haciendo que se liberen. El iceberg fue visto a través de las imágenes por satélite.

A huge iceberg four times the size of Manhattan (pictured) has broken off of an Antarctic glacier. The calving is the second time in just two years that a massive iceberg has separated from the continent's Pine Island Glacier
A huge iceberg four times the size of Manhattan (pictured) has broken off of an Antarctic glacier. The calving is the second time in just two years that a massive iceberg has separated from the continent's Pine Island Glacier


The new calving could accelerate the loss of more ice from the glacier, eventually breaking down the barrier that stops that land-based ice flowing out to sea.

Experts say the location from which the iceberg broke off is of particular interest.

Most of the time, icebergs break free from glaciers around the edges, but this most recent departure - from western Antarctica's Pine Island Glacier - has stemmed from an interior section.

This is unusual, and is not the first time the glacier has exhibited this behaviour in recent years, with a 224-square-mile (580 sq km) interior segment breaking off in 2015.

Experts claim it could be the result of warming ocean waters melting the ice from below, destabilising it.

Satellite observation specialist Dr Stef Lhermitte, from Delft University of Technology in the Netherlands, first reported the new iceberg on Twitter.

He said the glacier's latest break-off is the fifth biggest Antarctic calving event since 2000.
He tweeted: 'Breaking news from Pine Island Glacier, which lost 267km2 of icebergs today, after the internal crack resulted in a large calving event.






SOURCE : DAILYMAIL | RPP

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