Satellite images reveal HUGE CRACKS in Antarctic ice sheet measuring over 20 kilometers in length 

Mail Online | 10/16/2018 | Michael Thomsen For
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New images taken by the ESA's Copernicus Sentinel satellites shows two major new cracks in the West Antarctic Ice Sheet.

The cracks appeared on Pine Island Glacier, a part of the West Antarctic ice sheet which has been shedding rapidly increasing amount of ice into the ocean over the last 25 years.

Scientists - Cracks - Measure - Kilometers - Creation

Scientists anticipate the cracks, which measure over 20 kilometers long, could soon lead to the creation of an enormous new ice berg.

According to a report from the ESA, the ice velocity on the Pine Island Glacier currently exceeds 10 meters a day, leading to a series of major calving events in 1992, 1995, 2001, 2007, 2011, 2013, 2015, 2017, and 2018.

ESA - Cracks - Calving - Creation - Ice

According to the ESA, the latest observed cracks appeared after the 2018 calving, which led to the creation of an enormous ice berg called B-46.

'These new rifts appeared very soon after last year's major calving of iceberg B46,' the ESA's Mark Drinkwater said.

Winter - Monitoring - Extension - Signals - Iceberg

'Sentinel-1 winter monitoring of their progressive extension signals that a new iceberg of similar proportions will soon be calved.'

The B-46 iceberg separated from Pine Island Glacier last November and measured 66 square nautical miles, or 87 square miles, about three times the size of Manhattan.

Ice - Shelves - Ice - Areas - Antarctica

Ice shelves, floating glacial ice areas that surround much of Antarctica, calve icebergs as part of the natural process of ice flowing out to sea.

The accelerating pace of calving events in recent years has helped driven rises in global sea levels.

Pine - Island - Thwaites - Glacier - Millimeter

Pine Island and nearby Thwaites Glacier alone are contributing about 1 millimeter per decade to global sea level rise, as their flow of ice to the sea has accelerated in recent years, according to NASA research.

One of these calving events produced another usual phenomenon, a neatly rectangular ice berg the size of Delaraware called A-68.


'The berg was so clean-cut that it was reasonable to...
(Excerpt) Read more at: Mail Online
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