Post date: Jan 26, 2012 4:47:54 PM
A team of Brazilian and Chilean scientists say a newly discovered river running under Antarctic ice could be the result of global climate change.
CHILEAN ANTARCTICA TERRITORY (JANUARY 22, 2012) TVN - A team of Brazilian and Chilean scientists set out to investigate the effects of global climate change deep in the ice covered Antarctic continent say they have discovered a surprising system of rivers beneath the frozen surface.
The team of 17 specialists made their observations at the Union glacier just 1,000 kilometres (620 miles) from the South Pole along the 84th parallel far inside the interior of the Chilean Antarctic Territory.
The investigators were studying the effects of global climate change in the interior of the southernmost continent which is almost completely covered in ice and glaciers.
Though Antarctica has a varied topography including mountains and valleys and has been known to have massive lakes deep beneath the ice, the team of glaciologists and cryosphere specialists say finding running water in liquid form in the area they did was astonishing.
"We're talking about an altitude of seven or 800 meters in the area we observed, with temperatures normally at 15 or 20 degrees [Celsius] below zero [5 or -5 degrees Fahrenheit]. Therefore finding running water is a special phenomenon," said exploration team member Ricardo Jana and Chilean Antarctic Institute Glaciologist and researcher for the Centre for Quarternary Fuego-Patagonia and Antarctic Studies.
One of the Brazilian researchers, Jefferson Simoes, the director of Brazil's National Cryosphere Institute says they still need to study the origin of the rivers before drawing any conclusions.
"With Antarctica's wind we have some doubts. It could be warming or it could be, as we have seen many times before, melted ice water," Simoes said.
The team left an automated laboratory just 670 kilometres (415 miles) from the South Pole which continues to send them vital readings including temperature, carbon dioxide and other atmospheric readings in real-time.
They also brought back with them a 100 meter (yard) sample of ice which will help them study atmospheric changes in Antarctica over the past 300 years.