The North-East Passage, the sea route along the North coast of Russia, is expected to be free of ice early again this summer. The forecast was made by sea ice physicists of the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association based on a series of measurement flights over the Laptev Sea, a marginal sea of the Arctic Ocean.
Amongs experts the shelf sea is known as an “ice factory” of Arctic sea ice. At the end of last winter the researchers discovered large areas of thin ice not being thick enough to withstand the summer melt.
"These results were a great surprise to us“, says expedition member Dr. Thomas Krumpen. In previous measurements in the winter of 2007/2008 the ice in the same area had been up to one metre thicker.
The abbreviation SMOS (Soil Moisture and Ocean Salinity) is actually a satellite mission to determine the soil moisture of the mainland and salinity of the oceans. However, the satellite of the European Space Agency (ESA) can also be used to survey the Arctic sea ice. “The satellite can be used above all to detect thin ice areas, as we have seen them, from space“, explains Thomas Krumpen.
The SMOS satellite measurements from March and April of this year confirm that the thin ice areas discovered by the expedition team were no locally restricted phenomenon: “A large part of the North-East Passage was characterised by surprisingly thin ice at the end of the winter“, says Thomas Krumpen.
The new findings of the successful winter expedition give cause for concern to the scientists: “These huge new areas of thin ice will be the first to disappear when the ice melts in summer. And if the thin ice melts as quickly as we presume, the Laptev Sea and with it a part of the North-East Passage will be free from ice comparatively early this summer“, explains the sea ice physicist.In the past the Laptev Sea was always covered with sea ice from October to the end of the following July and was navigable for a maximum of two summer months. In 2011 the ice had retracted so far by the third week of July that during the course of the summer 33 ships were able to navigate the Arctic waters of Russia for the first time. The North-East Passage is viewed by shipping companies to be a time and fuel saving alternative to the conventional Europe-Asia route. The connection from Rotterdam to Japanese Yokohama via the Nord-East Passage is some 3800 sea miles shorter than taking the Suez Canal and Indian Ocean route.
General information on the SMOS satellites may be found on the ESA website at http://www.esa.int/esaCP/SEMB4L4AD1G_Germany_0.html and on the sea ice thickness measurements of the satellite at http://www.esa.int/esaLP/SEM361BX9WG_index_0.html.
The Alfred Wegener Institute conducts research in the Arctic and Antarctic and in the high and mid-latitude oceans. The Institute coordinates German polar research and provides important infrastructure such as the research ice breaker Polarstern and research stations in the Arctic and Antarctic to the national and international scientific world. The Alfred Wegener Institute is one of the 18 research centres of the Helmholtz Association, the largest scientific organisation in Germany.
Ralf Röchert | idw
Strength of tectonic plates may explain shape of the Tibetan Plateau, study finds
25.07.2017 | University of Illinois at Urbana-Champaign
NASA flights gauge summer sea ice melt in the Arctic
25.07.2017 | NASA/Goddard Space Flight Center
Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers
Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects
A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
25.07.2017 | Physics and Astronomy
25.07.2017 | Earth Sciences
25.07.2017 | Life Sciences