Modelling of acoustic backscattering by southern Baltic herring

• Autorzy: Idczak J. , Gorska N.
• Języki publikacji: EN

Abstrakty

EN

Assessment of Baltic herring abundance can be carried out using acoustic techniques. Analysis of the relationship between the Baltic herring individual target strength, TS, and the total fish length, L, important for the acoustic assessment, showed the relationship to be dependent on the location of the study area. This finding motivated a detailed analysis of the relationship for the herring occurring in the southern Baltic ICES subdivisions 24, 25, and 26, in which Poland is responsible for the acoustic herring abundance assessment. The paper addresses the numerical analysis of the backscattering properties of the southern Baltic herring. The modelling approach used to study the backscattering was based on the Modal Series-Based Deformed Cylinder Model approximation. Details of the individual herring swimbladders were taken into account. Morphometric data necessary for the analysis was obtained from X-ray images of herring from the Polish coastal zone (ICES subdivision 26).

Słowa kluczowe

EN

acoustic biomass estimation; Baltic herring; target strength; modelling approach; X-ray images

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2016
• Tom: Vol. 19
• Strony: 145--152
• Opis fizyczny: Bibliogr. 28 poz., rys.

Twórcy

autor

Idczak J.

• Institute of Oceanography, University of Gdańsk 46, Marszałka Piłsudskiego St., 81-378 Gdynia, Poland

autor

Gorska N.

• Institute of Oceanography, University of Gdańsk 46, Marszałka Piłsudskiego St., 81-378 Gdynia, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)