Monday, February 7, 2011

Russia poised to breach mysterious Antarctic lake

For 15 million years, an icebound lake has remained sealed deep beneath Antarctica's frozen crust, possibly hiding prehistoric or unknown life. Now Russian scientists are on the brink of piercing through to its secrets.

"There's only a bit left to go," Alexei Turkeyev, chief of the Russian polar Vostok Station, told Reuters by satellite phone. His team has drilled for weeks in a race to reach the lake, 3,750 meters (12,000 ft) beneath the polar ice cap, before the end of the brief Antarctic summer.

It was here that the coldest temperature ever found on Earth -- minus 89.2 Celsius (minus 128.6 Fahrenheit) -- was recorded.

With the rapid onset of winter, scientists will be forced to leave on the last flight out for this season, on Feb 6.

"It's minus 40 (Celsius) outside," Turkeyev said. "But whatever, we're working. We're feeling good. There's only 5 meters left until we get to the lake so it'll all be very soon."

Scientists suspect the lake's depths will reveal new life forms, show how the planet was before the ice age and how life evolved. It could offer a glimpse at what conditions for life exist in the similar extremes of Mars and Jupiter's moon Europa.

"It's like exploring an alien planet where no one has been before. We don't know what we'll find," said Valery Lukin of Russia's Arctic and Antarctic Research Institute (AARI) in St Petersburg, which oversees the expedition. ...


Lake Vostok, about the size of Lake Baikal in Siberia, is the largest, deepest and most isolated of Antarctica's 150 subglacial lakes. It is supersaturated with oxygen, resembling no other known environment on Earth.

"The Russians are leading the way with a torch," said John Priscu of Montana State University, a chief scientist with the U.S. program to explore another Antarctic lake.

Beneath the endless white landscape, Priscu suspects creatures may lurk, far from the sunlight, around thermal vents in the depths of Lake Vostok.

"I think Lake Vostok is an oasis under the ice sheet for life. It would be really wild to thoroughly sample... But until we learn how to get into the system cleanly that's an issue," he told Reuters.

The low-lying, snow-drift buildings and radio towers of Vostok Station sit above the eponymous lake. The borehole, pumped full of Kerosene and Freon to keep it from freezing shut, hangs poised over the pristine lake.

The explorers now face the question: How do we go where no one has gone before without spoiling it or bringing back some foreign virus?

"I feel very excited but once we do it there is no going back," Alexei Ekaikin, a scientist with the expedition said from Vostok Station. "Once you touch it, it will be touched forever."

via NewsDaily: Russia poised to breach mysterious Antarctic lake.


Mirlen101 said...

I've been waiting many years for this ! One of the top explorations in my lifetime !

arjay001 said...

I hope they don't mess it up. This is the only one we have. Be as bad as sending microorganisms to Mars.

Mirlen101 said...

Ya they've been waiting for years for fear of contamination . I wonder why they gave up on their elaborate plan for a sterile entry . Seems like they are using the old method which they could have done 20 years ago !