An integrated approach for monitoring structural deformation of aquaculture net cages

• DOI: 10.1016/j.oceaneng.2020.108424
• Publication Date: 2020-12-11T22:12:21Z
• Authors: Biao Su; Eleni Kelasidi; Kevin Frank; Joakim Haugen; Martin Føre; Magnus Oshaug Ped...
• Keywords: Cage; Net (polyhedron); Deformation monitoring

The majority of present marine finfish production is conducted in flexible net cages which can deform when they are subjected to water movements generated by currents. ability monitor deformation important for performing cage operations and evaluation fish health welfare under changing environment. This paper presents a new method real-time monitoring deformations that based on an integrated approach where positioning sensor data incorporated into numerical model. An underwater system was deployed at full-scale farm site, with three acoustic sensors mounted measuring positions the different depths. A novel model adaptive current field used simulate deformations, magnitude direction could be adapted continuously assessing deviations between simulated measured net. found accurately predict pre-defined velocity profiles set experiments. In experiment, good agreement also obtained data. shown well suited in-situ using significantly reduced number sensors.