Tuesday, June 3, 2014

Antarctic Began Melting 5000 Years Earlier than First Thought

Courtesy: Daily Mail

·      Ice sheet melt increased in 8 periods between 20,000 and 9,000 years ago
·      During one period 14,600 years ago, melting glaciers released so many icebergs into the ocean that sea level rose 6.5ft (2 metres) in just 100 years


·      Discovery was made after analysing sediment cores from the Scotia Sea
·      Melting of ice sheet wasn't thought to have started until 14,000 years ago

          It follows news that destabilization of West Antarctic has already begun


·      The Antarctic ice sheet is more unstable than first thought with a new study suggesting melting began 5,000 years earlier than previously believed.
·      The study reveals that shrinking of the vast ice sheet accelerated during eight distinct periods between 20,000 and 9,000 years ago causing a rapid sea level rise.
·      During one period 14,600 years ago, melting glaciers released so many icebergs into the ocean that sea level rose 6.5ft (2 metres) in just 100 years.