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Our glider at work in the Drake Passage

Louise with the glider before deployment on the Antarctic Peninsula

Picture of Louise Biddle with the glider before deployment on the Antarctic Peninsula

On November 30, University of Gothenburg's ocean glider was deployed within the ORCHESTRA project in Drake Passage in the Southern Ocean.

Dr Sebastiaan Swart is currently leading efforts in the use of autonomous ocean robots, such as gliders, at the University of Gothenburg. This work forms part of his Wallenberg Academy Fellowship, supported by the Knut & Alice Wallenberg Foundation. He says "The glider is doing great (fingers crossed)! It has experienced some strong currents synonymous with the Southern Ocean but we now have firm control over her... her name is Semla, after Swedish types of bulle. If all goes to plan, the glider will be out there in the cold for 3 months until recovery in February 2018".

The glider is continuously collecting physical and biogeochemical data between the surface and 1000m depth. Our GU glider is deployed together with other British Antarctic Survey gliders, such as 4 Slocum gliders and 1 surface Wave Glider.

Below are the latest plots of Semla's position and data:

Map 2017-12-08

Figure 1: Location of the glider in the Drake Passage, Antarctica. She is occupying a 20km transect repeatedly for 3 months. The dots represent her location overlaid onto the Sea Surface Temperature (color shading) and Sea Surface Height (SSH) as contours.

Scientific data. Sections from surface to 200m. 2017-12-08.

Figure 2: Profiles of different physical and biogeochemical observations (zoomed to upper 0-200m of the ocean) versus time.

2017-12-06

Scientific data. Sections from surface to 200m. 2017-12-06.

Map 2017-12-06

 

 

 

 

 

GU Seaglider recovered from Drake Passage... mission success!

The GU Seaglider was recovered cleanly on the British ice breaker, James Clark Ross, last night. It completed a 2 month mission in the rough and tumble Drake Passage calling us every 5 hours to send its live data and get new pilot instructions. The glider flew repeated 20km sections over a strong front of the Antarctic Circumpolar Current to measure submesoscale instabilities forming in the flow over the spring-summer (see map). 

A taste of all its data is attached here... a zoom of top 200m. And a pic of the glider of recovery - no biofouling and the Sweden flag survived on the hull! 

More of its story here at Polar Gliders.

 

 

 

Sidansvarig: Bo Johannesson|Sidan uppdaterades: 2018-01-30
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