Blar i forfatter "Spielhagen, Robert F."

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    • Active Nordic Seas deep-water formation during the last glacial maximum 

      Larkin, Christina S.; Mohamed, Mohamed Mahmoud Ezat Ahmed; Roberts, Natalie L.; Bauch, Henning A.; Spielhagen, Robert F.; Noormets, Riko; Polyak, Leonid; Moreton, Steven G.; Rasmussen, Tine Lander; Sarnthein, Michael; Tipper, Edward T.; Piotrowski, Alex M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-24)
      The Nordic Seas are the primary location where the warm waters of the North Atlantic Current densify to form North Atlantic Deep Water, which plays a key part in the modern Atlantic Meridional Overturning Circulation. The formation of dense water in the Nordic Seas and Arctic Ocean and resulting ocean circulation changes were probably driven by and contributed to the regional and global climate of ...

    • Environmental variability off NE Greenland (western Fram Strait) during the past 10,600 years 

      Zehnich, Marc; Spielhagen, Robert F.; Bauch, Henning A.; Forwick, Matthias; Hass, Christian; Palme, Tina; Stein, Ruediger; Syring, Nicole (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-13)
      To reconstruct the climatic and paleoceanographic variability offshore Northeast Greenland during the last ~10 ka with multidecadal resolution, sediment core PS93/025 from the outermost North-East Greenland continental shelf (80.5°N) was studied by a variety of micropaleontological, sedimentological and isotopic methods. High foraminiferal fluxes, together with high proportions of ice-rafted debris ...

    • Ventilation History of the Nordic Seas Deduced from Pelagic‐Benthic Radiocarbon Age Offsets 

      Telesiński, Maciej M.; Ezat, Mohamed; Muschitiello, Francesco; Bauch, Henning A.; Spielhagen, Robert F. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-24)
      Changes in ocean circulation are considered a major driver of centennial-to-millennial scale climate variability during the last deglaciation. Using four sediment records from the Nordic Seas, we studied radiocarbon ventilation ages in subsurface and bottom waters to reconstruct past variations in watermass overturning. Planktic foraminiferal ages show significant spatial variability over most of ...