few meters below the surface and up to 350m depth at a vertical speed of 1m/s and it can be towed between 2 and 8 knots (1-4m/s) speed through water. Depending on the exact parameters chosen, this results [...] water depth or a constant distance from the surface (e.g. underside of sea ice) or bottom. The operation in medium-severity sea ice conditions is planned. It can also be deflected horizontally to fly outside
terrestrial, sea ice), age and transformation processes (e.g. microbial and photo degradation). The application of Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) yielded major advances [...] environmental factors (sea ice cover, water mass characteristics, light and nutrient availability) affect not only the timing, but also the physiology and biochemistry in sea ice algae and phytoplankton. [...] from unicellular algae to higher trophic levels. In polar regions zooplankton has to cope with winter ice cover and darkness and hence with a relatively short spring/summer period of food plenty. In general
PermaRisk has developed and produced an exhibit for MS Wissenschaft in collaboration with the Heidelberg Institute for Geoinformation Technology. The MS Wissenschaft is an exhibition ship financed by the [...] awarded the 15th Potsdam “Nachwuchswissenschaftspreis” for his dissertation “Modeling the evolution of ice-rich permafrost landscapes in response to a warming climate”, which was awarded “summa cum laude”. [...] de/id/eprint/53969/ Paper entitled "Effects of multi-scale heterogeneity on the simulated evolution of ice-rich permafrost lowlands under a warming climate" has been published in The Cryosphere ( doi
inland ice plateau and measure the ice near the station, which is up to 2,780 metres thick. Until then, we had no high-resolution on the bottommost ice layer for this part of the Antarctic Ice Sheet. The [...] by Sina Löschke. Discover more... AWI Ice Blog: Epedition Reports Focus on: Ice Sheets Greenland: Ice really is a hot commodity Glaciology Section Fact Sheet on Ice Sheets Radar experts Martin Gehrmann [...] AWI’s new ultra-wideband ice radar, they can now aerially scan glaciers and ice sheets from top to bottom. In the following interview, Division Head Prof Angelika Humbert and ice-radar expert Dr Tobias Binder
Earth is felt to be the same; it causes objects to fall according to a well-known acceleration - g (9.8 ms -2 ). In reality, this g varies by a few hundred tens of thousandths of metres per second squared (unit [...] to the different ways that the masses in Earth's various rock and fluid layers - atmosphere, ocean, ice-sheet, sediments, crust, mantle, and core, are arranged with respect to each other. Accelerations from
isoprenoids, alkenones ( F6 ). By these molecules we obtain detailed information about the sea-ice distribution (sea-ice proxy, IP 25 , F7 ) and the origin of the organic matter (terrigenous and marine biomarkers) [...] with autosamplers, cold injection systems (Gerstel KAS 4) and flame-ionization detectors (FID). 2 GC/MS-Systems, consisting of Agilent 6850/ Agilent 7890 GC, Agilent 5975/ Agilent 5977 MSD, and an autosampler
the Filchner Ice Shelf (-80.43681, -044.43199) 105 m above sea level. The installation took place in the framework of the international Filchner Ice Shelf Project FISP .The huge Filchner Ice Shelf is bordered [...] calm region. Quite seldom the wind exceeds the threshold velocity from the wind turbine (about 10 m/s ). Thus, the battery voltages became very low during polar night. Fortunately, the battery provided
successful AWI dive-missions on Svalbard 2017 Almost ice free conditions in Kongsfjord in August 2017 (Photo: Alfred-Wegener-Institut / Max Schwanitz) Almost ice free conditions in Kongsfjord in August 2017 (Photo: [...] sedimentation and the omnipresent threat by drifting ice and icebergs. Therefore, together with the regular maintenance, the dive-team had to repair some ice caused damages and exchanged some technical parts [...] beginning. Due to bad weather conditions the AWI dive team had an alternative arrival by the help of “MS Polarsyssel”, the Sysselmannen’s (Governeur of Svalbard) service vessel, specialised on Arctic rescue
profile each day for 1 year) - self contained vehicel (internal data storage to avoid problems with ice in arctic regions) - measure C,T and p with precision high enough to indicate convective events in [...] reaching the control unit again. The upward speed is much slower than the downward speed (0.7 to 1.0 m/s), and measurements are performed only during the downcast. The vehicle is long and slim to achieve [...] proposed concepts winter ventilation can result in an increase in temperature and salinity, and that no ice formation is needed. This is due to the special conditions in the Greenland Sea with subsurface advection