On sound extinction by zooplankton

• Autorzy: Gorska N.
• Konferencja: Proceedings of the 2 nd EAA International Symposium on Hydroacoustics 24-27 May 1999, Gdańsk-Jurata POLAND
• Języki publikacji: EN

Abstrakty

EN

Theoretical investigation of sound extinction cross section of zooplankton individual is made on the basis of optical theorem. To find general properties of this characteristic, analytical model, describing the scattering at krill individual. is used. The extinction cross section is evaluated for various krill species. The dependence of the extinction cross section on the sound frequency is obtained. The paper presents the influence of the acoustical properties of the biological tissue and geometrical form of individual on the extinction cross section. The role of sound absorption in krill tissue is discussed.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 1999
• Tom: Vol. 2
• Strony: 45--50
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Gorska N.

• Institute of Oceanology, Polish Academy of Sciences, ul. Powstańców Warszawy 55, 81-712 Sopot, POLAND

Bibliografia

• 1. I. B. Andreeva, A. V. Belousov, Multiple sound scattering by densely packed shoals of marine animals, ICES Journal of Marine Science 53, pp. 323 - 327, (1996).
• 2. F. Armstrong, E. J. Simmonds, D. N. Maclennan, Sound losses through aggregations of fish, Proc. IOA 11, pp. 35 ·43, (1989).
• 3. D. Chu, K. G. Foofe, T. K. Stanton, Further analysis of target strength of Antarctic krill at 38 and 120 kHz: Comparison with deformed cylinder model and inference of orientation distribution, J. Acoust. Soc. Am. 93, pp. 2985 - 2988, (1993).
• 4. I. E. Davies, Attenuation of sound by schooled anchovies, J. Acoust. Soc. Am. 54, pp. 213 . 217, (1973).
• 5. K. G. Foofe, Analysis of empirical observations on the seattering of sound by encaged aggregation of fish, Fiskeridir. Skr. Ser. Havunders 16, pp. 423 - 456, (1978).
• 6. K. G. Foofe, Speed of sound in Euphausia superba, J. Acoust. Soc. Am. 87, pp. 1405 . 1408, (1990).
• 7. K. G. Foofe. E. Ona, R. Toresen, Determining the extinction cross section of aggregating fish, J. Acoust. Soc. Am. 91, pp. 1983 - 1989, (1992).
• 8. K. G. Foofe, l. Everson, J. L. Watkins, D. G. Bone, Target strength of Antarctic krill (Euphausia superba) at 38 and 120 kHz, J. Acoust. Soc. Am. 87, pp. 16 - 24, (1990).
• 9. M. Furusawa, K. Ishii, Y. Miyanohana, Attenuation of sound by schooling fish, J. Acoust, Soc. Am. 92, pp. 987·994, (1992).
• 10. N. Gorska, Analytical modelling of dense zooplankton aggregation influence on the echosounder signal, Proc. of the Fourth European Conference on Underwater Acoustics v.1, pp. 241 - 246, (1998).
• 11. A. lshimaru, Wave Propagation and Seattering in Rondom Media v.1, New York: Academic Press, 1978, ch. 14.
• 12. J. W. Kogeler, S. Falk - Petersen, A. Kristensen, F. Pettersen, J. Dalen, Density and sound speed contrasts in Sub - Arctic zooplankton, Polar Biol. 7, pp. 231 - 235, (1987).
• 13. A. Kristensen, J. Dalen, Acoustic estimation of size distribution and abundance of zooplankton, J. Acoust. Soc. Am. 80, pp. 601 - 611, (1986).
• 14. M. C. Macaulay, A generalised target strength model for euphausiids with application to ofher zooplankton, J. Acoust. Soc. Am. 95, pp. 2452 . 2466, (1994).
• 15. D. N. Maclennan, F. Armstrong, E. J. Simmonds, Further observations on the attenuation of sound by aggregations of fish, Proc. IOA 12, pp. 99·106, (1990).
• 16. T. K. Stanton, Sound scattering by cylinder of finite length. III. Deformed cylinders, J. Acoust, Soc. Am. 86, pp. 691 -705, (1989).
• 17. T. K. Stanton, D. Chu, P. H. Wiebie, Sound scattering by several zooplankton groups. Seattering models, J. Acoust. Soc. Am. 103 pp. 236 - 253, (1998).
• 18. R. Toresen, Absorption of acoustic energy in dense herring schools studied by the attenuation in the boftom echo signal, Fish. Res. 10, pp. 3 17 . 327, (1991).
• 19. D. E. Weston, Sound propagation in the presence of bladder fish, Underwater Acoustics, edited by V. M. Albers, New York: Plenum, 1967, v.2, pp. 55 . 88.
• 20. Z. Ye, On acoustic attenuation by swimbladder fish, J. Acoust. Soc. Am. 100, pp. 669 . 672, (1996)