publication . Master thesis . 2011

Target strength and tilt angle distribution of lesser sandeel (Ammodytes marinus)

Kubilius, Rokas;
Open Access English
  • Published: 09 Aug 2011
  • Publisher: Klaipeda University, Faculty of mathematics and natural sciences, Ecology department
  • Country: Norway
Abstract
Master thesis. Supervisor: PhD. Artūras Razinkovas, Consultant: Prof. Egil Ona Lesser sandeel (Ammodytes marinus) was investigated acoustically as well as using video camera in two field experiments in 2007 and one in 2008, both during North Sea sandeel surveys by the Norwegian research vessel “Johan Hjort”. Specially designed cubic cage was put on the sea bottom trapping sandeels inside in 2007, while in 2008 sandeels were caught by trawl and dredge and investigated acoustically in enclosed cage hanging in mid-water. In total 3 successful experiments conducted. Approximately 22 hours of acoustical and 11 hours of video data was available. Lesser sandeel target ...
Subjects
free text keywords: sandeel, tobis, acoustics, akustikk, sonar, VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921
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