Acoustic estimation of macrophytes in the Hornsund Fjord (The Svalbard Archipelago)

• Autorzy: Kruss A. , Tęgowski J. , Wiktor J. , Tatarek A.
• Języki publikacji: EN

Abstrakty

EN

In this paper we examine the use of side scan sonar for estimation and spatial distribution of macrophytes in Arctic conditions. Acoustic observation were verified by video recordings and biological samplings. Single beam echosounder was also used. The Hornsund Fjord represents a periglacial environment with great diversity of morphodynamic processes and sensitivity for global warming changes so it is one of the most promising areas to research the influence of the climate’s impact on ecosystem. Side scan sonar is a very effective and economic tool for mapping marine vegetation on the seafloor but interpretation of data still causes many problems especially in the specific conditions of the Arctic fjords (underwater rocks, postglacial sediments, steep slopes). We have created segmentation and classification algorithm based on the two-dimensional discrete wavelet decomposition of echo signals and fuzzy c-means data clustering. The algorithm was verified using biological data.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2006
• Tom: Vol. 9
• Strony: 89--96
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Kruss A.

autor

Tęgowski J.

autor

Wiktor J.

autor

Tatarek A.

• nstitute of Oceanology Polish Academy of Science Powstancow Warszawy 55,81-712 Sopot, Poland,

Bibliografia

• [1] Ph. Blondel, B.J. Murton, Handbook of Seafloor Sonar Imagery, PRAXIS-Wiley, Chichester, 314 pp. 1997.
• [2] J.M. Preston, A.C. Christney, L.S. Beran, W.,T. Collins, Statistical Seabed Segmentation-from images and echoes to objectiv clustering, In Proc. of the 7th European Conference on Underwater Acoustics, ECUA 2004, Delft, The Netherlands, pp. 813- 818, July 2004.
• [3] J. Tegowski, A. Kruss, Parametrical Analysis of Acoustic Echoes from Macrophytes, In Proc. of the 7th European Conference on Underwater Acoustics, ECUA 2006, Carvoeiro, Portugal, June 2006.
• [4] L. Atallah, P.J. Probert Smith, C.R. Bates, Wavelet analysis of bathymetric sidescan sonar data for the classification of seafloor sediments in Hopvågen Bay - Norway, Marine Geophysical Researches, 23, pp. 431-442, 2002.
• [5] D.T. Cobra, A.V. Oppenheim, J.S. Jaffe, Geometric distortions in side-scan sonar images: A procedure for their estimation and correction, IEEE Journ. of Oc. Eng., Vol.13(3), pp.252-254, 1992.
• [6] Ch. Wiencke, B. Vogele, A. Kovaltchouk, H. Hop, Species composition and zonation of marine benthic macroalgae at Hansneset in Kongsfiorden, Svalbard, Berichte zur Polar und Meeresforschung, 492, p55-62, 2004.
• [7] D. Faghani, J. Tegowski, N. Gorska, Z. Klusek, Recognition Of Underwater Vegetation Species In The Baltic Sea , In Proc. of the 7th European Conference on Underwater Acoustics, ECUA 2004, Delft, The Netherlands, pp. 373- 378, July 2004.
• [8] J.C Bezdeck, R. Ehrlich, W. Full, FCM: Fuzzy CMeans Algorithm, Computers and Geoscience, 10 (2-3), pp. 191-203, 1984.