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Posts Tagged ‘Larsen C’

Trillion-ton Iceberg Brakes Off Antarctica

Posted by feww on July 12, 2017

Larsen C Calves Giant Iceberg [“A68”]

One of the largest icebergs on record has finally calved away from the Larsen C ice shelf in Antarctica. The 5,500km² section of Larsen C broke away during the past 48 hours. The iceberg could be named “A68.” It has a volume of about 1,150km³, weighing about 1.1 trillion tons.

A cluster of mini icebergs may have also broken off the ice shelf.

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Source of image: http://www.esa.int/spaceinimages/Images/2017/07/Monitoring_the_rift

Image Details:

  • Title Monitoring the rift
  • Released 12/07/2017 1:46 pm
  • Copyright contains modified Copernicus Sentinel data (2016–17), processed by Swansea University
  • Description The fissure in the Larsen C ice shelf first appeared several years ago, but seemed relatively stable until January 2016, when it began to lengthen. In January 2017 alone it travelled 20 km, reaching a total length of about 175 km. After a few weeks of calm, the rift propagated a further 16 km at the end of May, and then extended further at the end of June. More importantly, as the crack grew, it branched off towards the edge of the shelf, whereas before it had been running parallel to the Weddell Sea. With just a few km between the end of the fissure and the ocean by early July, the fate of the shelf was sealed. Images from 12 July showed that part of the ice shelf had finally broken away.
  • Id 380991

 

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Colossal Iceberg Breaking Off Within Days

Posted by feww on July 8, 2017

Larsen C Ice Shelf Close to Calving

The third-largest iceberg in recorded history is about to break off from Larsen C ice shelf in Antarctica within days, FIRE-EARTH Science Team believes.

  • Calving speed has dramatically increased over the last few weeks.
  • At this stage, the separation could occur instantaneously, if assisted by a sizeable earthquake or a local tsunami.
  • Latest satellite imagery shows a swarm of new cracks branching off the main rift.
  • In all likelihood, the resultant large iceberg would be accompanied by a cluster of mini icebergs.
  • The large iceberg will have a volume of about 1,150km³ and an area of about 5,500km², or about 10% of the Larsen C ice shelf.

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