Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "tråling"

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    • Estimates of towing time in surveys 

      Huse, Irene; Michalsen, Kathrine; Skeide, Roar L. (ICES CM documents, Working paper, 2002)
      To decide the start and stop time for a survey haul the current method used in Norwegian sampling are the data from the door sensors and height sensors of the trawl. When the trawl has achieved its right geometry, the start ...

    • Measuring uncertainty in trawl surveys: implementation in DATRAS 

      Larsen, Lena Inger; Öberst, Rainer; Maxwell, David; Pennington, Michael; Sparholt, Henrik; Lassen, Hans (ICES CM documents, Working paper, 2006)
      Abstract The basic data from several ICES coordinated trawl and beam trawl surveys in the Baltic Sea, the North Sea, the area west of Scotland and France are stored in the DATRAS database in the ICES Secretariat; every ...

    • Mortality and injuries of haddock, cod and saithe escaping through codend meshes and sorting grids 

      Ingolfsson, Olafur; Soldal, Aud Vold; Huse, Irene (ICES CM documents, Working paper, 2002)
      Mortalities and injuries of the gadoids haddock (Melanogrammus aeglefinus L.), cod (Gadus morhua L.) and saithe (Pollachius virens L.) were studied after codend and grid escapement in two full scale trials in 2000 and 2001 ...