Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search


Bedrock breakthrough in Antarctica

21 December 2012

Bedrock breakthrough in Antarctica

A team of scientists from nine nations, led by Victoria University’s Dr Nancy Bertler, have made a huge breakthrough in Antarctica—successfully drilling more than 760m through the ice to the bedrock, on an island in the Ross Sea.

The international project has been headed up by GNS Science, Victoria University and Antarctica New Zealand.

Dr Bertler, of Victoria University’s Antarctic Research Centre and GNS Science, has led the team to drill the 763m long ice core from an ice cap on Roosevelt Island in Antarctica. They completed the drilling late last night when the drill bit brought 40cms of sediment up from the base of the ice sheet.

“The drill cores will provide the most detailed record of the climate history of the Ross Sea region for the last 30,000 years—the time during which the coastal margin of the Antarctic ice sheet retreated following the last great ice age,” says Dr Bertler, by satellite phone from the camp on Roosevelt Island.

“I am thrilled with the team’s success, which has been many years in the planning—and has involved four summers of field work doing drill site surveys, setting up the drill system and camp, as well as the drilling itself.”

Analyses of the ice core, to be undertaken at the purpose-built National Ice Core Research Facility at GNS Science in 2013, will provide important new insights into how the Ross Sea region will respond to global warming, and the sediments from the base of the ice sheet might reveal what the region was like the last time Earth’s climate was as warm as it is today.

Director of the Antarctic Research Centre, Professor Tim Naish, received the news by satellite phone last night. “The team are obviously delighted—I am extremely proud of them for successfully obtaining one of most important climate archives from Antarctica to date.”

The ice drill itself was constructed by Antarctica Research Centre technologists Alex Pyne and Darcy Mandeno, working with Nelson engineering firm Pro-machining. The pair have more than 30 years experience in scientific drilling of sediments and ice in Antarctica.

The logistical support for the Roosevelt Island Ice Coring Expedition (RICE) has been provided by Antarctica New Zealand, costing more than $1million per year.

Antarctica New Zealand Chief Executive Lou Sanson says that the support of such a major field operation nearly 1,000kms from New Zealand’s Scott Base has been challenging and complex.

“This is a marquee project for Antarctica New Zealand, and we are very proud of the success of Nancy Bertler and her team.”

The ice cores will be transported back to McMurdo station by air, and then by cargo ship to New Zealand in March. A 50-strong science team from New Zealand, Australia, the USA, Germany, Denmark, China, Korea, Sweden and the United Kingdom will meet in at the GNS Science ice core facility in Lower Hutt to sample the cores in May.

The team will remain at the Roosevelt Island Camp for another six weeks, as they pack up and move equipment back to Scott Base ready for their return to New Zealand.

“We are in high spirits, and can’t wait to get started on analysing the more than 100,000 samples that will be taken from the ice cores,” says Bertler.


© Scoop Media

Business Headlines | Sci-Tech Headlines


Oceans: NOAA Declares Third Ever Global Coral Bleaching Event

As record ocean temperatures cause widespread coral bleaching across Hawaii, NOAA scientists confirm the same stressful conditions are expanding to the Caribbean and may last into the new year, prompting the declaration of the third global coral bleaching event ever on record. More>>

Scoop Business: A Decade Of Government Pre-Seed Investment

More publicly-funded science is being commercialised after a decade of government ‘pre-see’d investment, according to an independent review. More>>


Solid Energy: Plan To Shut Unprofitable Huntly East Mine

Solid Energy, the state-owned coal miner in voluntary administration, plans to shut down its unprofitable Huntly East mine and lay off 65 staff after deciding the site stands "no chance whatsoever" of finding a buyer. More>>


E Tū: Merger Creates NZ's Biggest Private Sector Union

E tū has been created by the merger of the Engineering, Printing and Manufacturing Union and Service and Food Workers’ Union. It represents more than 50,000 working New Zealanders in industries as diverse as aviation, construction, journalism, food manufacturing, mining and cleaning. More>>


Internet: NZ Govt Lifts Target Speeds For Rural Broadband

The government has lifted its expectations on faster broadband speeds for rural New Zealand as it targets increased spending on research and development in the country's information and communications technology sector, which it sees as a key driver for export growth. More>>


Banks: Westpac Keeps Core Government Transactions Contract

The local arm of Westpac Banking Corp has kept its contract with the New Zealand government to provide core transactions, but will have to share peripheral services with its rivals. More>>


Science Investment Plan: Universities Welcome Statement

Universities New Zealand has welcomed the National Statement of Science Investment released by the Government today... this is a critical document as it sets out the Government’s ten-year strategic direction that will guide future investment in New Zealand’s science system. More>>


Get More From Scoop

Search Scoop  
Powered by Vodafone
NZ independent news