Russia takes first samples from sub-glacial lake in Antarctica
A Russian research team investigating a sub-glacial lake in Antarctica have recovered the first sample of transparent ice from the area.
According to the Arctic and Antarctic Research Institute the drilling team obtained the sample from Lake Vostok on 10 January.
"The first core of transparent lake ice, two metres long, was obtained on January 10 at a depth of 3,406 metres," announced the Institute in a statement. "Inside it was a vertical channel filled with white bubble-rich ice."
Part of the interest in Lake Vostok, which has been sealed under several kilometres of ice for the last 14 million years, comes because conditions within the lake are thought to be similar to those in bodies of water on Jupiter’s moon Europa and Saturn’s tiny moon Enceladus.
Any life forms found within Vostok and able to withstand conditions including enormous pressure, extreme low temperature and a total lack of sunlight would have implications for the possibility of life elsewhere in the solar system.
The data from the current mission will replace that of a 2012 drilling project. The earlier expedition saw researchers for the Institute analysing ice samples originally thought to be from the sealed lake but possibly from the glacier above the lake.
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The documentary below will fill you in on everything you need to know about this frozen tundra of historical significance and how this research aids in our search for life on and outside of our planet.
The Lost World of Lake Vostok
It sometimes seems as if our planet has no secrets left – but deep beneath the great Antarctic ice sheet scientists have made an astonishing discovery. They’ve found one of the largest lakes in the world. It’s very existence defies belief. Scientists are desperate to get into the lake because its extreme environment may be home to unique flora and fauna, never seen before, and NASA are excited by what it could teach us about extraterrestrial life. But 4 kilometers of ice stand between the lake and the surface, and breaking this seal without contaminating the most pristine body of water on the planet is possibly one of the greatest challenges science faces in the 21st century.
In 1957 the Russians established a remote base in Antarctica – the Vostok station. It soon became a byword for hardship – dependent on an epic annual 1000km tractor journey from the coast for its supplies. The coldest temperature ever found on Earth (-89°C) was recorded here on the 21st July 1983. It’s an unlikely setting for a lake of liquid water. But in the 1970’s a British team used airborne radar to see beneath the ice, mapping the mountainous land buried by the Antarctic ice sheet. Flying near the Vostok base their radar trace suddenly went flat. They guessed that the flat trace could only be from water. It was the first evidence that the ice could be hiding a great secret.
But 20 years passed before their suspicions were confirmed, when satellites finally revealed that there was an enormous lake under the Vostok base. It is one of the largest lakes in the world – at 10,000 square km it’s about the extent of Lake Ontario, but about twice as deep (500m in places). The theory was that it could only exist because the ice acts like a giant insulating blanket, trapping enough of the earth’s heat to melt the very bottom of the ice sheet.
Watch the full documentary here.