Browsing Brage IMR by Author "Floen, Svein"

Now showing items 1-6 of 6

    • A PC-based echo integrator system appliable for school structure analyzis 

      Floen, Svein; Totland, Bjørn; Øvredal, Jan Tore; Misund, Ole Arve (ICES CM Documents;1991/B:43, Working paper, 1991)
      A low cost system for integration of echo signals on a PC has been developed. The system calculates the area backscattering strength in surface and bottom layers, and is designed both for the purpose of conventional ...

    • Abundance estimation of schools using a fisheries sonar 

      Misund, Ole Arve; Floen, Svein (ICES CM Documents;1991/B:35, Working paper, 1991)
      An attempt of abundance estimation of fish schooling close to surface using sonar was conducted in Eastern North Sea - Skagerrak in September 1990. The method is based on measurements of the school area by the Furuno ...

    • An integrated database for marine research 

      Floen, Svein; Gjøsæter, Harald; Korneliussen, Rolf J.; Sagen, Helge; Thorvaldsen, Petter A.; Wennevik, Vidar (ICES CM Documents;1993/D:23, Working paper, 1993)
      In 1992 an integrated model for marine research data was developed at the Institute of Marine Research. Traditionally, the marine research disciplines collect data from their own fields, normally used in a limited context. ...

    • Automatic recording of fish heart rate on a personal computer 

      Floen, Svein; Totland, Bjørn; Øvredal, Jan Tore (ICES CM Documents;1988/B:34, Working paper, 1988)
      From acoustic tags operated into fish in a closed system, the heartbeat signals are sent via underwater telemetry and counted on a personal computer. The computer removes false pulses caused by noise, and calculates the ...

    • The catching efficiency of cod gillnets with different hanging ratio (E) and different floatline buoyancy. 

      Angelsen, Karl Kr.; Haugen, Kjeld; Floen, Svein (ICES CM Documents;1979/B:19, Working paper, 1979)
      The floatline buoyancy seems to influence the catching efficiency of cod gillnets. Trials with different byoyancies in cod gillnet fishing in Northern Norway gave the best catches with a buoyancy of about 65 grammes per ...

    • PC-based echo integration system for fish behaviour studies 

      Floen, Svein; Totland, Bjørn; Øvredal, Jan Tore (ICES CM Documents;1988/B:35, Working paper, 1988)
      An echo integration system presenting the distribution and vertical and horizontal movements of fish in net pens, is described. The system can be configured to multiplex up to 16 transducers sequentially. The number of ...