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Engineering team completes ambitious Antarctic expedition in the 'deep-field'
Date:1/15/2012

A team of four British engineers has returned to the UK after completing a gruelling journey to one of the most remote and hostile locations on the planet to put in place equipment and supplies for an ambitious project later this year. Enduring temperatures of minus 35C the Subglacial Lake Ellsworth 'Advance Party' has successfully paved the way to explore an ancient lake buried beneath 3 km of Antarctic ice. A powerful 'tractor-train' towed nearly 70 tonnes of equipment across Antarctica's ice over deep snow and steep mountain passes. In December a science and engineering team will make the 16,000 km journey from the UK to collect water and sediments from the buried lake.

Lake Ellsworth will be the first Antarctic subglacial lake to be measured and sampled directly through the design and manufacture of space-industry standard 'clean technology'. Scientists have been planning for more than 15 years to access the lake, which is one of more than 400 known subglacial lakes in Antarctica, in the quest to yield new knowledge about the evolution of life on Earth and other planets. Lake-bed sediments could also provide vital clues about the Earth's past climate. Through a bore hole, drilled using high-pressure hot water, the team will lower a titanium probe to measure and sample the water, followed by a corer to extract sediment from the lake.

The Advance Party team paved the way for this mission by transporting the drilling equipment more than 250 km through the Ellsworth Mountain range, over deep-snow terrain and crevasses to the Lake Ellsworth drilling site. The final leg of this journey was the most challenging and required powerful tractors to tow heavy containers of equipment on sledges and skis, forming a 'tractor-train'. The soft, deep snow and concrete-hard 'sastrugi' snow forms caused the Advance Party's progress to slow, but after three days they safely reached the Lake Ellsworth drilling site.

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Contact: Athena Dinar
amdi@bas.ac.uk
44-122-322-1414
British Antarctic Survey
Source:Eurekalert

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