A group of researchers from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research is flying to South Africa today. However this trip south is no summer holiday, but rather the start of a special journey: on Saturday, 8 June 2013 the research vessel Polarstern will be embarking on an expedition to the Antarctic winter. 49 researchers from institutes in twelve countries together with 44 crewmembers will spend a good two months in the Southern Ocean. They will be exploring the sea ice, the atmosphere and the ocean, until the expedition comes to an end on 12 August in Punta Arenas, Chile.
RV Polarstern - into darkness
Frank Rödel / Alfred-Wegener-Institut
The research icebreaker Polarstern is one of the few ships in the world that is able to navigate the Antarctic Ocean in the winter. At this time of the year the Weddell Sea, which is the destination of the expedition, is covered by sea ice, and the members of the expedition team will face temperatures of around minus 30 degrees Celsius and the polar night with only a few hours of twilight. These special conditions have meant that not enough research has been carried out into several physical, chemical and biological processes in the Antarctic winter. The Antarctic plays a key role in the Earth System: It is where the so-called deep water, which drives global ocean currents, is formed.Chief scientist Prof. Dr. Peter Lemke from the Alfred Wegener Institute has assembled an international team and is taking the most modern research equipment on the expedition in order to obtain baseline data in the wintery Antarctic. On the Greenwich Meridian through to the Antarctic coast the team plans to investigate, for example, the fundamental question of why Antarctic sea ice is expanding slightly whilst the sea ice cover in the Arctic is steadily shrinking.
Ralf Röchert | idw
Multi-year submarine-canyon study challenges textbook theories about turbidity currents
12.12.2017 | Monterey Bay Aquarium Research Institute
How do megacities impact coastal seas? Searching for evidence in Chinese marginal seas
11.12.2017 | Leibniz-Institut für Ostseeforschung Warnemünde
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
13.12.2017 | Health and Medicine
13.12.2017 | Physics and Astronomy
13.12.2017 | Life Sciences