Representatives of the research community and the political sphere took advantage of the short stop in the port to share experiences and ideas and intensify the good cooperation within the framework of a reception on board.
On 29 January the Polarstern will sail with a new crew as well as new scientific and technical personnel back to Punta Arenas. From the eastern Ross Sea and along the continental margin off Marie Byrd Land geophysical profiling will connect the existing data grid of the Ross Sea to the profiles in the Amundsen Sea and Bellingshausen Sea. The researchers headed by Chief Scientist Dr. Karsten Gohl from the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association want to close the currently existing large gap in data. The objective of this work is to determine the topography of the seafloor at present and in the geological past and thus create a basis for long-term climate simulations. The main area of work will subsequently be Pine Island Bay, known for the recently accelerated retreat of the Pine Island and Thwaites Glacier systems. Reconstruction of the dynamic changes in the West Antarctic ice sheet is aimed at providing a better understanding of the current changes and their possible influence on an increased sea level rise. This aim constitutes the focus of the geophysical and geological investigations. Geothermal heat-flow measurements are expected to provide insight into recent volcanic activities that may have an impact on ice-sheet dynamics. Oceanographic measurements will help in explaining one of the possible causes of the present retreat of the glaciers.
The 43 members of the team involved in the expedition that just ended was headed by geologist Dr. Rainer Gersonde from the Alfred Wegener Institute. They collected 1000 metres of sediment cores altogether (around eleven tons in weight) at 70 stations during the research cruise from Chile to New Zealand that covered 9400 nautical miles (17,000 km). The unique material will furnish for the first time detailed information on the climate history of the last 400,000 to 4 million years in this region, which has been subject to little research up to now, though it is important for climate development. Scientists from six nations, including New Zealand, will jointly examine the evolution of the Antarctic Circumpolar Current, the spread of sea ice and its influence on variations in greenhouse gas concentrations as well as melting events in the West Antarctic ice sheet and their impact on global ocean circulation using state-of-the-art methods. Another objective is to determine climate-impacting interactions between the polar South Pacific, the tropical and northern polar regions during past cold and warm periods.
Such questions relevant to the climate are also the focus of a planned deep-sea drilling project within the framework of the Integrated Ocean Drilling Program (IODP) in the Antarctic Pacific. The two ongoing expedition phases will provide the database for selecting the IODP drilling sites. Researchers from all over the world want to look as far as 40 million years back into the geological past with the deep-sea sediments to be drilled in the future.
In addition to geologists and geophysicists, biologists, chemists, oceanographers and scientists of numerous other disciplines also make regular use of the research icebreaker for their studies. This is the 50th expedition with about 200 legs altogether and a good example of the multidisciplinary approach applied on the Polarstern, which has been sailing across the Arctic, Antarctic and oceans of the mid latitudes since 1982. It provides a platform for scientists of the Alfred Wegener Institute and their cooperation partners and contributes to unravelling the complex interrelationships in the Earth system. The primary objective of the research is to understand the driving forces and fluctuations in climate cycles.
The Alfred Wegener Institute conducts research in the Arctic, Antarctic and oceans of the high and mid latitudes. It coordinates polar research in Germany and provides major infrastructure to the international scientific community, such as the research icebreaker Polarstern and stations in the Arctic and Antarctic. The Alfred Wegener Institute is one of the sixteen research centres of the Helmholtz Association, the largest scientific organisation in Germany.
Margarete Pauls | idw
New Study Will Help Find the Best Locations for Thermal Power Stations in Iceland
19.01.2017 | University of Gothenburg
Water - as the underlying driver of the Earth’s carbon cycle
17.01.2017 | Max-Planck-Institut für Biogeochemie
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences