• Acoustic scattering layers reveal a faunal connection across the Fram Strait 

      Gjøsæter, Harald; Ingvaldsen, Randi Brunvær; Christiansen, Jørgen Schou (Peer reviewed; Journal article, 2020)
      Acoustic scattering layers (SL) at various depths are common phenomena in most oceans, but the organisms that make up these layers vary and so does their density, and hence the backscattered energy. During two crossings ...
    • Arctic continental slopes sharp gradients of physical processes affect pelagic and benthic ecosystems. 

      Bluhm, Bodil; Janout, Markus; Danielson, Seth L.; Ellingsen, Ingrid H.; Gavrilo, Maria; Grebmeier, Jaqueline; Hopcroft, Russell R.; Iken, Katrin; Ingvaldsen, Randi Brunvær; Jørgensen, Lis Lindal; Kosobokova, Ksenia N.; Kwok, Ron; Polyakov, Igor V.; Renaud, Paul E.; Carmack, Eddy C. (Peer reviewed; Journal article, 2020)
      Continental slopes – steep regions between the shelf break and abyssal ocean – play key roles in the climatology and ecology of the Arctic Ocean. Here, through review and synthesis, we find that the narrow slope regions ...
    • Atlantic cod (Gadus morhua)feeding over deep water in the high Arctic 

      Ingvaldsen, Randi Brunvær; Gjøsæter, Harald; Ona, Egil; Michalsen, Kathrine (Peer reviewed; Journal article, 2017)
    • Atlantic Water Pathways Along the North-Western Svalbard Shelf Mapped Using Vessel-Mounted Current Profilers 

      Menze, Sebastian; Ingvaldsen, Randi Brunvær; Haugan, Peter M.; Fer, Ilker; Sundfjord, Arild; Beszczynska-Moeller, Agnieszka; Falk-Petersen, Stig (Journal article; Peer reviewed, 2019)
      A large amount of warm Atlantic water (AW) enters the Arctic as a boundary current through Fram Strait (West Spitsbergen Current [WSC]) and is the major oceanic heat source to the Arctic Ocean. Along the north‐western ...
    • Borealization of the Arctic Ocean in response to anomalous advection from sub-Arctic seas. 

      Polyakov, Igor V.; Alkire, Mattew; Bluhm, Bodil; Brown, Kristina; Carmack, Eddy C.; Chierici, Melissa; Danielson, Seth L.; Ellingsen, Ingrid H.; Ershova, Elizaveta; Gardfeldt, Katrin; Ingvaldsen, Randi Brunvær; Pnyushkov, Andrey V.; Slagstad, Dag; Wassmann, Paul (Peer reviewed; Journal article, 2020)
      An important yet still not well documented aspect of recent changes in the Arctic Ocean is associated with the advection of anomalous sub-Arctic Atlantic- and Pacific-origin waters and biota into the polar basins, a process ...
    • A deep scattering layer under the North Pole pack ice 

      Snoeijs-Leijonmalm, Pauline; Gjøsæter, Harald; Ingvaldsen, Randi Brunvær; Knutsen, Tor; Korneliussen, Rolf; Ona, Egil; Skjoldal, Hein Rune; Stranne, Christian; Mayer, Larry; Jakobsson, Martin; Gårdfeldt, Katarina (Peer reviewed; Journal article, 2021)
      The 3.3 million km2 marine ecosystem around the North Pole, defined as the Central Arctic Ocean (CAO), is a blind spot on the map of the world’s fish stocks. The CAO essentially comprises the permanently ice-covered deep ...
    • Evidence of diel vertical migration of mesopelagic sound-scattering organisms in the Arctic 

      Gjøsæter, Harald; Wiebe, Peter H.; Knutsen, Tor; Ingvaldsen, Randi Brunvær (Peer reviewed; Journal article, 2017)
    • Faster Atlantic currents drive poleward expansion of temperate phytoplankton in the Arctic Ocean 

      Oziel, L.; Baudena, A.; Ardyna, M.; Massicotte, Philippe; Randelhoff, Achim; Sallée, Jean-Bapiste; Ingvaldsen, Randi Brunvær; Devred, E.; Babin, Marcel (Peer reviewed; Journal article, 2020)
      The Arctic marine biome, shrinking with increasing temperature and receding sea-ice cover, is tightly connected to lower latitudes through the North Atlantic. By flowing northward through the European Arctic Corridor (the ...
    • High Latitude Epipelagic and mesopelagic scattering layers-a reference for future Arctic ecosystem change 

      Knutsen, Tor; Wiebe, Peter H.; Gjøsæter, Harald; Ingvaldsen, Randi Brunvær; Lien, Gunnar (Peer reviewed; Journal article, 2017)
    • Impact of multiple stressors on sea bed fauna in a warming Arctic 

      Jørgensen, Lis Lindal; Primicerio, Raul; Ingvaldsen, Randi Brunvær; Fossheim, Maria; Strelkova, Natalia; Thangstad, Trude Hauge; Manushin, Igor; Zakharov, Denis (Journal article; Peer reviewed, 2019)
      The Arctic Barents Sea is experiencing a record temperature increase, a poleward shift in the distributions of commercial fish stocks, and invasion by the snow crab, a new predator. To evaluate benthic community vulnerability ...
    • Ocean acidification state variability of the Atlantic Arctic Ocean around northern Svalbard 

      Jones, Elizabeth Marie; Chierici, Melissa; Menze, Sebastian; Fransson, Agneta; Ingvaldsen, Randi Brunvær; Lødemel, Helene Hodal (Peer reviewed; Journal article, 2021)
      The Svalbard shelf and Atlantic Arctic Ocean are a transition zone between northward flowing Atlantic Water and ice-covered waters of the Arctic. Effects of regional ocean warming, sea ice loss and greater influence of ...
    • Productive detours – Atlantic water inflow and acoustic backscatter in the major troughs along the Svalbard shelf 

      Menze, Sebastian; Ingvaldsen, Randi Brunvær; Nikolopoulos, Anna; Hattermann, Tore; Albretsen, Jon; Gjøsæter, Harald (Peer reviewed; Journal article, 2020)
      Atlantic Water (AW) flowing along the western and northern Svalbard shelf-break extends the Atlantic domain into the Arctic and is the region’s major source of heat, nutrients and advected plankton. We investigated the ...
    • Status for miljøet i Barentshavet: Rapport fra Overvåkingsgruppen 2020 

      Jelmert, Anders; Sandø, Anne Britt; Frie, Anne Kirstine Højholt; Bogstad, Bjarte; Grøsvik, Bjørn Einar; Eriksen, Elena; Hallfredsson, Elvar H.; Stenevik, Erling Kåre; Bagøien, Espen; Ottersen, Geir; Skaret, Georg; Höffle, Hannes; Vee, Ida; Johansson, Josefina; Jørgensen, Lis Lindal; McBride, Margaret; Chierici, Melissa; Dalpadado, Padmini; Ingvaldsen, Randi Brunvær; Lien, Vidar Surén; Høines, Åge Sigurd; Fransson, Agneta; Sundfjord, Arild; von Quillfeldt, Cecilie; Lydersen, Christian; Hop, Haakon; Strøm, Hallvard; Johnsen, Hanne; Routti, Heli Anna Irmeli; Danielsen, Ida Kristin; Aars, Jon; Kovacs, Kit M.; Helgason, Lisa Bjørnsdatter; Itkin, Mikhail; Pavlova, Olga; Assmy, Philipp; Descamps, Sebastien; Lind, Sigrid; Gerland, Sebastian; Skotte, Gunnar; Stene, Kristine O.; Leiknes, Øystein; Skjerdal, Hilde Kristin; Jensen, Henning; Jensen, Andre Frantzen; Green, Norman Whitaker; Lorentsen, Svein Håkon (Rapport fra havforskningen;2020 - 13, Research report, 2020)
      I rapporten dekkes tre hovedtemaer: (1) Dominerende trekk i status og utvikling i økosystemet i Barentshavet siden 2016 med vekt på å beskrive hvordan sentrale prosesser påvirker tilstanden; (2) en mer detaljert beskrivelse ...
    • Variability and redistribution of heat in the Atlantic Water boundary current north of Svalbard 

      Renner, Angelika; Sundfjord, Arild; Janout, Markus; Ingvaldsen, Randi Brunvær; Beszczynska, Agnieszka; Pickart, Robert S.; Peréz-Hernández, M. Dolores (Journal article; Peer reviewed, 2018)
      We quantify Atlantic Water heat loss north of Svalbard using year‐long hydrographic and current records from three moorings deployed across the Svalbard Branch of the Atlantic Water boundary current in 2012–2013. The ...
    • Weakening of Cold Halocline Layer Exposes Sea Ice to Oceanic Heat in the Eastern Arctic Ocean 

      Polyakov, Igor V.; Rippeth, Tom; Fer, Ilker; Alkire, Matthew B.; Carmack, Eddy; Ingvaldsen, Randi Brunvær; Ivanov, Vladimir V.; Janout, Markus; Lind, Sigrid; Padman, Laurie; Pnyushkov, Andrey V.; Rember, Robert (Peer reviewed; Journal article, 2020)
      A 15-yr duration record of mooring observations from the eastern (>70°E) Eurasian Basin (EB) of the Arctic Ocean is used to show and quantify the recently increased oceanic heat flux from intermediate-depth (~150–900 m) ...