Please select your home edition
Edition
upffront 728x90

‘Ocean glider’ home after two-month voyage

by CSIRO on 16 Apr 2009
Electronics engineer Lindsay MacDonald (left) and oceanographer Ken Ridgway with the ocean glider, recovered east of the Tasman Peninsula on Tuesday after its two-month sampling the East Australian Current. 16 April 2009 Ref 09/64 © Copyright CSIRO Australia http://www.csiro.au
Under the joint CSIRO Wealth from Oceans National Research Flagship and Integrated Marine Observation System (IMOS) project, the underwater ocean glider was launched in February on a two-month, 1,500 kilometre voyage.

The ocean glider was supplied through IMOS’s Australian National Facility for Ocean Gliders facility located at The University of Western Australia.

The Integrated Marine Observing System has been developed as part of the Australian Government's National Collaborative Research Infrastructure Strategy.

With its porpoising motion and an ability to descend to a depth of nearly 1,000 metres, the $A200,000 robotic glider is being trialled in the Tasman Sea and the Indian Ocean as the latest tool in Australia’s $A94 million marine observing network.

The glider’s sensors measure temperature and salinity, as well a range of biological parameters including oxygen and turbidity.

Senior CSIRO Wealth from Oceans Flagship researcher Ken Ridgway, says the Tasman Sea trial has generated new confidence among scientists broadening the array of instruments available to them to better understand the East Australian Current and Leeuwin Currents.

'Ocean currents around Australia are critical to so many aspects of nature and human activity,' Mr Ridgway says. 'With the East Australian and Leeuwin Currents, we need to understand how they change from season to season and year to year, and the extent of their influence on local coastal conditions, as this affects climate, weather, fisheries, shipping and more.

'Increasingly, these autonomous gliders are being used by northern hemisphere marine research groups. Australia is just beginning to use these deep-ocean systems, although shallow water gliders have been deployed off Western Australia, South Australia and New South Wales in recent months. The Tasman Sea deployment was the first deployment of a deep-ocean glider in the southern hemisphere.'

Together with data from research vessels, satellites and moored, drifting and expendable instruments, the glider will add a new dimension to profiling the oceans around Australia. But there are still challenges to be overcome.

'In a lot of ways this first deployment is as much learning how to pilot the glider and guide it through and around the eddies of the East Australian Current as it is getting about the data we want,' Mr Ridgway says.

A recent innovation in oceanography, the winged gliders are programmable and guided by Global Positioning Systems. They glide during depth changes, driven by an inflated oil filled chamber. However, because the ocean currents can be faster than the glider’s speed, ensuring they are not swept away has been a difficult process.

'The appeal of these instruments is that they are out working while the scientist can be assessing what is near-real time information about ocean conditions,' Mr Ridgway says.

http://www.csiro.au

North Technology - Southern Sparsupffront 660x82Wildwind 2016 660x82

Related Articles

America’s Cup World Series – More final day images by Ingrid Abery
Ingrid Abery has provided this gallery of images from final day Ingrid Abery has provided this gallery of images from final day
Posted today at 11:37 am
America’s Cup World Series – Final race day images by Ingrid Abery
Ingrid Abery provided this gallery of images from final day Ingrid Abery provided this gallery of images from final day
Posted today at 11:21 am
LV America’s Cup World Series - Up and down for Groupama Team France
The new leader is none other than the local team lead by Sir Ben Ainslie, who was rallied along throughout the six races 2016 America’s Cup World Series - This weekend the overall ranking for the Louis Vuitton America’s Cup World Series has been turned on its head and with the Portsmouth act complete, the new leader is none other than the local team lead by Sir Ben Ainslie, who was rallied along throughout the six races by strong support from a home crowd.
Posted today at 6:45 am
LV America's Cup World Series - Land Rover BAR take two from two
While Oracle Team USA did all but everything they could to take the win with a two, one, one scorecard today 2016 Louis Vuitton America's Cup World Series - While Oracle Team USA did all but everything they could to take the win with a two, one, one scorecard today, it wasn't enough to topple the fast and furious tenacity of a Ben Ainslie led Land Rover BAR on the final day of racing at the Louis Vuitton America's Cup World Series in Portsmouth.
Posted today at 5:39 am
2016 LV America’s Cup World Series - More images by Carlo Borlenghi
Carlo Borlenghi provided this gallery of images from America’s Cup World Series - Race Day 2 and Prize-giving ceremony. 2016 America’s Cup World Series - Carlo Borlenghi provided this gallery of images from 2016 Louis Vuitton America’s Cup World Series - Race Day 2 and Prize-giving ceremony.
Posted today at 4:46 am
2016 LV America’s Cup World Series - Day 2 images by Carlo Borlenghi
Carlo Borlenghi provided this gallery of images from America’s Cup World Series - Race Day 2 and Prize-giving ceremony 2016 America’s Cup World Series - Carlo Borlenghi provided this gallery of images from 2016 Louis Vuitton America’s Cup World Series - Race Day 2 and Prize-giving ceremony.
Posted today at 4:22 am
America's Cup - Southern Spars to build AC50 for Emirates Team NZ
Southern Spars has been appointed to build Emirates Team New Zealand’s AC50 wingsailed foiling catamaran One of the world's leading composite engineering companies, Southern Spars has been appointed to build Emirates Team New Zealand’s AC50 wingsailed foiling catamaran for the 35th America’s Cup campaign. The move marks a shift away from Cookson Boats who have been Team New Zealand's boatbuilder since 2000. No reasons have been given for the decision to change the builder.
Posted on 24 Jul
America's Cup - Emirates Team New Zealand foiled in Portsmouth
Super Sunday saw more breeze in Portsmouth today, giving all the teams the opportunity for fast racing up on their foils Super Sunday saw more breeze in Portsmouth today, giving all the teams the opportunity for fast racing up on their foils. For Emirates Team New Zealand the regatta finished as realistically expected when lining up to race against an exceptionally strong fleet with with a almost entirely rejigged crew due to Blair Tuke and Peter Burling’s absence in their build up to the Rio Olympics in the 49e
Posted on 24 Jul
LV America’s Cup World Series – Big Ben takes a big win in Portsmouth
The Duke and Duchess of Cambridge were on hand to present the awards and it was a fitting end to an amazing weekend. It really was Super Sunday for Ben Ainslie and Land Rover BAR whose second place in the last of Sunday’s three races gave them the overall regatta win at the Portsmouth event.
Posted on 24 Jul
America's Cup World Series – Two win day closes the gap on leaderboard
Oracle Team USA opened Super Sunday with a second place finish and followed it up with two race victories Oracle Team USA opened Super Sunday with a second place finish and followed it up with two race victories to close within just one point of the winning home team.
Posted on 24 Jul