• Ocean: FRAM

    look beyond the moorings and the Hausgarten into the Norwegian Sea and the Arctic Ocean. The Fram Strait connects the Arctic Ocean and the North Atlantic. Unlike the shallow water conjunction to the Pacific [...] Arctic long-term observatory FRAM 5,000 metres seawater plus ice separate the seafloor from boisterous life in the upper water layers of the Arctic Ocean. Additionally there is a strong change between [...] deep and thus the main region for exchange of water between the Arctic and the global oceans. Due to its importance for the global ocean circulation the Fram Strait has long since been a focus area of

  • Ice Ocean Dynamics

    the Eurasian shelf seas. Ocean waters with salinities below the average salinity of the Arctic Ocean also contribute positively to the fresh water balance of the Arctic Ocean. Such waters flow in from [...] er-Institut) Figure 1: Surface circulation of the Arctic Ocean (Graphic: Alfred-Wegener-Institut) Figure 2: Mid-depth circulation in the Arctic Ocean, which is fed from the Atlantic. 129 Iodine releases [...] blue line shows the total Arctic (liquid + sea ice) freshwater content (integrated in the area in blue on the map) (Graphic: T. Kovacz, Alfred-Wegener-Institut) The Arctic Ocean receives freshwater by run-off

  • FRAM Ocean Observing System

    Boetius, A. (2013): FRAM - FRontiers in Arctic marine Monitoring: Permanent Observations in a Gateway to the Arctic Ocean. OCEANS - Bergen, 2013 MTS/IEEE. doi:10.1109/OCEANS Bergen.2013.6608008 Publications featuring [...] FRontiers in Arctic marine Monitoring Our ability to understand the complex interactions of biological, chemical, physical, and geological processes in the ocean and on land is still limited by the lack [...] interdisciplinary observation infrastructures. The main purpose of the planned open-ocean infrastructure FRAM (FRontiers in Arctic marine Monitoring) is permanent presence at sea, from surface to depth, for the

  • The gypsum gravity chute: A phytoplankton-elevator to the ocean floor

    Arctic Ocean
    Tiny gypsum crystals can make phytoplankton so heavy that they rapidly sink, hereby transporting large quantities of carbon to the ocean’s depths. Experts from the Alfred Wegener Institute [...] Institute recently observed this phenomenon for the first time in the Arctic. As a result of this massive algal transport, in the future large amounts of nutrients could be lost from the surface waters.

  • Great potential for comprehensive monitoring of the water masses in the ocean

    Arctic Ocean
    More melt water is entering the Artic Ocean from the glaciers due to climbing temperatures. In addition, the rivers are carrying large amounts of sediment from thawing permafrost. How the [...] the Arctic Ocean will react to such changes is a very big question, which is concerning scientists around the world. Researchers from the Alfred Wegener Institute have now published, together with int

  • Ultraslow spreading mid-ocean ridges

    category of mid-ocean ridges, accounting for about 15% of the total length of mid-ocean ridges worldwide. Since ultraslow ridges are located in the Arctic Ocean and the stormy Southwest Indian Ocean and are therefore [...] Ultraslow spreading mid-ocean ridges At mid-ocean ridges, the lithospheric plates move apart at rates of about 5-150 mm/year and new oceanic lithosphere is continuously formed. At low spreading rates of [...] making its way to the ocean floor through a cold, thick lithosphere. Therefore, the formation process of new ocean lithosphere differs at ultraslow spreading ridges from all other ocean basins. Ultraslow ridges

  • Ocean_and_Climate_Change_12Oct2020.pdf

    shifted location • Arctic Ocean: • Increased coastline erosion – e.g. village relocation • Cultural change – subsistence lifestyle facing problems Changes in the ocean impact people Arctic Ocean and extreme [...] weather Impacts on people J. Francis What’s happening in the Arctic Ocean? • Warmer air reduces air column density, shifting wind fields Arctic Ocean and extreme mid-latitude weather Impacts on people J. Francis [...] PowerPoint Presentation Ocean and climate change Dr. Rebecca Rolph Alfred Wegener Institute for Polar and Marine Research Potsdam, Germany • How the ocean regulates climate • Changes in the ocean • What these changes

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  • Formation of the Arctic Basin

    role in Arctic Ocean geophysical research for many years and in various projects. Projects Formation of new seafloor at the Arctic Mid-Ocean Ridge International Bathymetric Chart of the Arctic Ocean (Photo: [...] Formation of the Arctic Basin The Arctic Ocean is of particular geological interest. It hosts a wealth of different geological provinces ranging from deep ocean basins over prominent ridges to vast shallow [...] perennial sea ice-cover, information on the geological history of the Arctic Ocean is still sparse. As the sea-ice recedes, the Arctic Ocean will see an explosion of research activities. With RV Polarstern

  • Central Arctic

    from the Arctic reservoir. Long-term observations in the Arctic Ocean by a multitude of observational platforms allow estimates of annual mean liquid freshwater content in the upper Arctic basins (Figure [...] Central Arctic long-term observations [Translate to English:] Anomalies of annual mean liquid freshwater content in the upper Arctic Ocean basin from salinity profile observations since 1992. Liquid freshwater [...] linear trend is 600+-300 The central Arctic is an important component of the global climate system, not only by atmospheric teleconnections but also by links in ocean circulation to lower latitudes. There

  • AWI researchers measure a record concentration of microplastic in arctic sea ice

    amounts of microplastic in arctic sea ice than ever before. However, the majority of particles were microscopically small. The ice samples from five regions throughout the Arctic Ocean contained up to 12,000 [...] patch in the Pacific Ocean, while in turn, the high percentage of paint and nylon particles pointed to the intensified shipping and fishing activities in some parts of the Arctic Ocean. The new study has