• Antarctic krill and ecosystem monitoring survey off the South Orkney Islands in 2023 

      Krafft, Bjørn Arne; Pedersen, Ronald; Zhang, Guosong; Menze, Sebastian; Rasmussen, Astrid Fuglseth; Skaar, Hege; Dale, Julian; Biuw, Martin; Oosthuisen, Chris; Lowther, Andrew (Toktrapport;2023 - 8, Research report, 2023)
      Environmental monitoring along 5 set transect lines off South Orkney Islands in the Southern Ocean have been carried out annually (since 2011) by the Institute of Marine Research, Norway. Data are used to calculate biomass ...
    • Atlantic cod (Gadus morhua) larvae are attracted by low-frequency noise simulating that of operating offshore wind farms 

      Cresci, Alessandro; Zhang, Guosong; Durif, Caroline; Larsen, Torkel; Shema, Steven; Skiftesvik, Anne Berit; Browman, Howard (Peer reviewed; Journal article, 2023)
      The number and size of offshore wind (OW) turbines is increasing rapidly. OW turbines produce continuous, low-frequency noise that could impact marine fish dispersing/migrating through the facilities. Any such impact would ...
    • An Automated Pipeline for Image Processing and Data Treatment to Track Activity Rhythms of Paragorgia arborea in Relation to Hydrographic Conditions 

      Zuazo, Ander; Grinyo, Jordi; López-vázquez, Vanesa; Rodriguez, Erik; Costa, Corrado; Ortenzi, Luciano; Flögel, Sascha; Valencia, Javier; Marini, Simone; Zhang, Guosong; Wehde, Henning; Aguzzi, Jocopo (Peer reviewed; Journal article, 2020)
      Imaging technologies are being deployed on cabled observatory networks worldwide. They allow for the monitoring of the biological activity of deep-sea organisms on temporal scales that were never attained before. In this ...
    • Effects of the electromagnetic field used in hydrocarbon surveys on marine organisms 

      Durif, Caroline; Zhang, Guosong; Cresci, Alessandro; Skiftesvik, Anne Berit; Browman, Howard; Sivle, Lise Doksæter; Nyquist, Daniel; Jensen, Hans Roger; Solheim, Jon Gunnar (Rapport fra havforskningen;2022 - 23, Research report, 2022)
      Controlled Source Electromagnetics (CSEM) technology has been used in the exploration for hydrocarbon reservoirs. It consists of an electric dipole source which is towed horizontally 30-50 m above the seabed or 10 m below ...
    • A flexible autonomous robotic observatory infrastructure for bentho-pelagic monitoring 

      Aguzzi, Jacopo; Albiez, Jan; Flögel, Sascha; Godø, Olav Rune; Grimsbø, Endre; Marini, Simone; Pfannkuche, Olaf; Rodriguez, Erik; Thomsen, Laurenz; Torkelsen, Terje; Valencia, Javier; López-vázquez, Vanesa; Wehde, Henning; Zhang, Guosong (Peer reviewed; Journal article, 2020)
      This paper presents the technological developments and the policy contexts for the project “Autonomous Robotic Sea-Floor Infrastructure for Bentho-Pelagic Monitoring” (ARIM). The development is based on the national ...
    • Havforskningsinsituttets rådgivning for menneskeskapt støy i havet - Kunnskapsgrunnlag, vurderinger og råd for 2021 

      Sivle, Lise Doksæter; Forland, Tonje Nesse; de Jong, Karen; Kutti, Tina; Zhang, Guosong; Wehde, Henning; Grimsbø, Endre (Rapport fra havforskningen;2021 - 4, Research report, 2021)
      Havforskningsinstituttet gir råd for alle operasjoner til havs som involverer bruk av lydkilder som kan påvirke marine økosystemer. Dette inkluderer vitenskapelige undersøkelser, undersjøiske sprenginger, operasjoner knyttet ...
    • HAVFORSKNINGSINSITUTTETS RÅDGIVNING FOR MENNESKESKAPT STØY I HAVET - Kunnskapsgrunnlag, vurderinger og råd for 2022 

      Sivle, Lise Doksæter; Forland, Tonje Nesse; de Jong, Karen; Pedersen, Geir; Zhang, Guosong; Kutti, Tina; McQueen, Kate; Wehde, Henning; Grimsbø, Endre (Rapport fra havforskningen;2022 - 1, Research report, 2022)
      Havforskningsinstituttet gir råd for alle operasjoner til havs som involverer bruk av lydkilder som kan påvirke marine økosystemer. Dette inkluderer vitenskapelige undersøkelser, utbygging og sprenging i sjø, seismiske og ...
    • Havforskningsinstituttets rådgivning for menneskeskapt støy i havet - Kunnskapsgrunnlag, vurderinger og råd for 2023 

      Sivle, Lise Doksæter; Forland, Tonje Nesse; de Jong, Karen; Zhang, Guosong; Kutti, Tina; Durif, Caroline; Wehde, Henning; Grimsbø, Endre (Rapport fra havforskningen;2023 - 2, Research report, 2023)
      Havforskningsinstituttet gir råd for alle operasjoner til havs som involverer bruk av lydkilder, samt elektromagnetiske kilder som kan påvirke marine økosystemer. Dette inkluderer vitenskapelige undersøkelser, utbygging ...
    • In situ calibration of observatory broadband echosounders 

      Ona, Egil; Zhang, Guosong; Pedersen, Geir; Johnsen, Espen (Peer reviewed; Journal article, 2020)
      Today, numerous scientific echosounders are used as continuously monitoring systems in ocean observatories. These echosounders are usually calibrated in shallow water, either in laboratory tanks or at random ocean docks ...
    • Measurements of underwater noise radiated by commercial ships at a cabled ocean observatory 

      Zhang, Guosong; Forland, Tonje Nesse; Johnsen, Espen; Pedersen, Geir; Dong, Hefeng (Journal article; Peer reviewed, 2020)
      Measurements of underwater noise radiated under ship normal operations are presented. The acoustic data, from the cabled ocean observatory, are analyzed under each identified ship passage, which was obtained by the Automatic ...
    • Survey report: Developing methods for abundance estimation of bluefin tuna in Norwegian waters 

      Pena, Hector; Tenningen, Maria; Zhang, Guosong; Skaret, Georg (Toktrapport;2022 - 5, Research report, 2022)
      The major aim of this survey was to map and quantify distribution, school size and behaviour of Atlantic bluefin tuna (Thunnus thynnus) migrating to and feeding in Norwegian waters.The survey covered the region between ...
    • Testing of trawl-acoustic stock estimation of spawning capelin 2021 

      Skaret, Georg; Pena, Hector; Totland, Atle; Zhang, Guosong; Hellenbrecht, Lea Marie; Karlson, Stine; Pedersen, Ronald; Tonheim, Susanne; Rist, Frøydis; Anthonypillai, Valentine (Toktrapport;2021 - 5, Research report, 2021)
      This report describes the third in a series of trawl-acoustic monitoring surveys of the spawning stock of capelin during the migration to the coast. The survey is a response to a proposal from the industry to evaluate the ...
    • Testing of trawl-acoustic stock estimation of spawning capelin 2022 

      Skaret, Georg; Pena, Hector; Totland, Atle; Tenningen, Maria; Zhang, Guosong (Toktrapport;2022 - 4, Research report, 2022)
      This report describes the fourth in a series of trawl-acoustic monitoring surveys of the spawning stock of capelin during the migration to the coast. The survey is a response to a proposal from the industry to evaluate the ...