WATER COLUMN FEATURES AND SEAFLOOR CHARACTERISTICS USING SIMULTANEOUS MULTIBEAM WATER COLUMN DETECTION
Simultaneous mid-water and seafloor classification enables the study of the relationship between seafloor characteristics and water column features known as habitat interactions. Normally, the focus of these data is only on one part of either the water column or the seafloor. This water column data is usually filtered out to form an accurate bathymetric surface. Otherwise, this will cause data duplication or loss and degrade the accuracy of the data. This study aimed to produce a comprehensive map using a Multibeam Echosounder System (MBES). The data acquisition was carried out using WASSP WMB-160f MBES and a camera recorder was used for verification. Data comparison was carried out through bathymetric and backscatter analysis and filtered at the minimum threshold. The result showed that both data were able to be detected simultaneously at a comparable and effective result without neglecting any details behind. The water column data was at good resolution for detection below the 300 kHz, although the data obtained from this study did not show the real shape and size of the detected object. In addition, the seafloor could also be well detected and properly classified according to survey requirements.
K. Colbo, T. Ross, C. Brown and T. Weber, "A review of oceanographic applications of water column data from multibeam echosounders,"Estuarine, Coastal and Shelf Science, vol. 145, pp. 41-56, 2014.
M. Cox, D. Demer, J. Warren, G. Cutter, and A. Brierley, “Multibeam echosounder observations reveal interactions between Antarctic krill and air-breathing predators,” Marine Ecology Progress Series, vol. 378, pp. 199–209, 2009.
T. C. Weber, M. E. Lutcavage, and M. L. Schroth-Miller, “Near resonance acoustic scattering from organized schools of juvenile Atlantic bluefin tuna (Thunnusthynnus),” The Journal of the Acoustical Society of America, vol. 133, no. 6, pp. 3802–3812, 2013.
M. Parsons, I. Parnum and R. McCauley, "Visualizing Samsonfish (Seriola hippos) with a Reson 7125 Seabat multibeam sonar", ICES Journal of Marine Science, vol. 70, no. 3, pp. 665-674, 2013.
I. Parnum, "Benthic habitat mapping using multibeam sonar systems," Ph. D dissertation, Department of Imaging and Applied Physics, Centre for Marine Science and Technology, Curtin University of Technology, Perth, Australia, 2008.
S. O. C. Boulay, “Analysis of Multibeam Sonar Data for Benthic Habitat Characterization of The Port of Tauranga, New Zealand,” M.S. thesis, Department of Earth and Ocean Sciences, University of Waikato, Tauranga, New Zealand, 2012.
K. Mussai, “Imaging and counting of targets with a high resolution multibeam sonar,” M.S. thesis, Department of Electrical Engineering,University of Cape Town, Cape Town, South Africa, 2010.
M. D’Elia, B. Patti, A. Bonanno, I. Fontana, G. Giacalone, G. Basilone and P. Fernandes, "Analysis of backscatter properties and application of classification procedures for the identification of small pelagic fish species in the Central Mediterranean," Fisheries Research, vol. 149, pp. 33-42, 2014.
C. Brown, S. Smith, P. Lawton and J. Anderson, "Benthic habitat mapping: A review of progress towards improved understanding of the spatial ecology of the seafloor using acoustic techniques", Estuarine, Coastal and Shelf Science, vol. 92, no. 3, pp. 502-520, 2011.
G. Ercilla, D. Casas, J. Vázquez, J. Iglesias, L. Somoza, C. Juan, T. Medialdea, R. León, F. Estrada, S. García-Gil, M. Farran, F. Bohoyo, M. García and A. Maestro, "Imaging the recent sediment dynamics of the Galicia Bank region (Atlantic, NW Iberian Peninsula)", Marine Geophysical Research, vol. 32, no. 1-2, pp. 99-126, 2011.
K. Mann and J. Lazier, Dynamics of Marine Ecosystems. New York, NY: John Wiley & Sons, 2013.
V. Lucieer, N. Hill, N. Barrett and S. Nichol, "Do marine substrates ‘look’ and ‘sound’ the same? Supervised classification of multibeam acoustic data using autonomous underwater vehicle images," Estuarine, Coastal and Shelf Science, vol. 117, pp. 94-106, 2013.
M. A. Z. Fuad, “Coral Reef Rugosity and Coral Biodiversity. Bunaken National Park-North Sulawesi, Indonesia,”M.S. thesis Department of Natural Resources, International Institute for Geo-information Science and Earth Observation, Enschede, The Netherlands, 2010.
V. Draštík and J. Kubečka, "Fish avoidance of acoustic survey boat in shallow waters", Fisheries Research, vol. 72, no. 2-3, pp. 219-228, 2005.
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