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
New plate adds plot twist to ancient tectonic tale
15.08.2017 | Rice University
Global warming will leave different fingerprints on global subtropical anticyclones
14.08.2017 | Institute of Atmospheric Physics, Chinese Academy of Sciences
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science, the Italian Space Agency (ASI), and the Instituto Geofisico--Escuela Politecnica Nacional (IGEPN) of Ecuador, showed an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR).
The Andes region in which Cotopaxi volcano is located is known to contain some of the world's most serious volcanic hazard. A mid- to large-size eruption has...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
16.08.2017 | Physics and Astronomy
16.08.2017 | Materials Sciences
16.08.2017 | Interdisciplinary Research