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ZONE AVEUGLE SURFACE [1 record]

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Record 1 2023-05-11

English

Subject field(s)
  • Collaboration with the FAO
  • Acoustics (Physics)
  • Ecosystems
  • Commercial Fishing
CONT

Traditional acoustic surveys to assess fish abundance can be limited by the surface blind zone and the seabed dead zone. The blind zone is the unobservable layer above the transducer and in its nearfield, and the dead zone is the layer closest to the seabed, where only a fraction of the backscatter from fish can be separated from that of the seabed … fish in the blind zone often react to an approaching vessel ...

French

Domaine(s)
  • Collaboration avec la FAO
  • Acoustique (Physique)
  • Écosystèmes
  • Pêche commerciale

Spanish

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