Weekly Reports Polarstern

The Expedition PS119 Punta Arenas - Port Stanley

During R/V POLARSTERN cruise PS119 we are planning to investigate hydrothermal vents and potential cold seeps at the Sandwich micro-plate using the remotely operated vehicle (ROV) MARUM-QUEST. The planned research is based on the discovery of unique hydrothermal vent ecosystems at the back-arc spreading East Scotia Ridge as well as at submarine volcanoes of the South Sandwich Island Arc. The overarching theme of the project is to study in a comparative way the geological settings of geofuel emissions at the seafloor with their associated ecological hot spots. In a cross-disciplinary approach, we intend to study aspects of geology, geochemistry, microbiology, symbiont-host relationships as well as eukaryotic biogeography in an international research consortium combining experts in their respective field of sciences. Addition investigations of the South Sandwich volcanoes as well as the distribution of wales are further topics of the research cruise PS119.

PS114 - Weekly Report No. 1 | 10 - 15 July 2018

Into the Arctic

[16. July 2018] 

A walk through the ship shows: Everything is ready to go! Just a few days ago there were partly unpacked transport boxes everywhere (from whole containers to small cardboard boxes).

PS113 - Weekly Report No. 5| 4th -10th June 2018

The Final Strai(gh)t

[11. June 2018] 

On 5th June after leaving Las Palmas on Gran Canaria we again reduced our speed for 5 hours so that we could tow the Triaxus/topAWI for one final test.  Thereupon followed a final comparison station with CTD and the optical measurements package. Thereafter, we were supposed to head to Bremerhaven with all haste and without further ado.

PS113 - Weekly Report No. 4 | 28th May - 3rd June 2018

The Tropical North Atlantic: Cold in the Water, Dust in the Sky

[04. June 2018] 

The whole week long we sailed in the North-east Trade Wind zone under skies with only a few clouds, but with strong head-winds for Polarstern. By crossing the northern tropic, the Tropic of Cancer, at 23° 26’ 05” North during the night of  31st May to 1st June we have left the Tropics and are again in the Subtropics. Although we have been moving through the Tropics and Subtropics, the water and air surrounding us with temperatures of around 20°C have been relatively cool, 10° colder than the daytime temperatures in much of Germany.  That...

PS113 - Weekly Report No. 3 | 21st - 27th May 2018

Cruising through the Blue

[28. May 2018] 

After entering the Tropics in the Southeast Trade Wind region and sailing under cloudless skies, the second half of the week was largely cloudy with frequent rainfall. We had arrived in the Inter-Tropical Convergence Zone, in which the air masses transported by the Southeast Trade Winds and their northern hemispheric counterpart, the Northeast Trade Winds, rise up and produce thick clouds reaching high into the atmosphere.

PS113 - Weekly Report No. 2 | 14th-20th May (Whit Sunday) 2018

Whitsun Excursion with a Towed System

[23. May 2018] 

Since crossing the Tropic of Capricorn at 23° 26’ 05” South on Thursday this week travelling north we find ourselves, according to the astronomical definition, in the Tropics. The weather is what you would expect; water and air temperature lie between 26 and 27°C. Since we have also arrived in the zone of the SE Trade Winds there is a stiff and steady breeze and by day the sun shines from a sky with few clouds into deep blue ocean water.