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MATNOC – A management tool for coastal aquaculture based on knowledge on nearshore ocean circulation dynamics

MATNOC’s main aim is to aid the aquaculture industry in reducing the spreading of sea lice, a main problem for the industry with large economic consequences.

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About the project

The project partners will assemble a numerical model system especially designed for near-shore drift prediction along the complex Norwegian coastline. For this purpose, the model will use unstructured computational grids that allow unprecedented resolution in narrow straits and fjords. It will also account for lice drift by both currents and waves, and major scientific component of the project will be to better understand interactions between currents and waves---and their consequences for net drift. A dedicated field experiment will back up the development of the model system. Finally, the state-of-the art model system and the gained knowledge on current-wave interactions will be fed into a digital decision-making tool to be used by the aquaculture industry. The core novelty of this tool is that ensemble predictions made by the model system will be used to form uncertainty estimates that should improve the knowledge base for decision making.

Objectives

The primary objectives of the project are:

1) To improve our understanding of the dynamical processes that impact near-surface drift of sea lice along a complex coastline and create the best possible inner-coastal model system for drift applications

2) To create a model-based decision support tool, where the user can interact with model data to make statistical estimates of sea lice dispersion and connectivity as well as drift forecasts for chosen locations. The tool should also give estimates of uncertainties on its predictions.

Financing

The project is funded from the Research Council of Norway in the MAROFF 2-programme. The project number is 308796.

The project period is from October 2020 to December 2023.

Cooperation

This project is lead by Akvaplan-niva and will be done in collaboration with researchers at The Norwegian Meteorological Institute, Florida Golf Coast University, and Department of Geosciences, University of Oslo.

Publications

  • Halsne, Trygve; Benetazzo, Alvise; Barbariol, Francesco; Christensen, Kai Håkon; Carrasco, Ana & Breivik, Øyvind (2024). Wave Modulation in a Strong Tidal Current and Its Impact on Extreme Waves. Journal of Physical Oceanography. ISSN 0022-3670. 54(1), p. 131–151. doi: 10.1175/JPO-D-23-0051.1.
  • Espenes, Håvard; Isachsen, Pål Erik & Nøst, Ole Anders (2023). Observations and modeling of tidally generated high-frequency velocity fluctuations downstream of a channel constriction. Ocean Science. ISSN 1812-0784. 19(6), p. 1633–1648. doi: 10.5194/os-19-1633-2023. Full text in Research Archive
  • Halsne, Trygve; Christensen, Kai Håkon; Hope, Gaute & Breivik, Øyvind (2023). Ocean wave tracing v.1: a numerical solver of the wave ray equations for ocean waves on variable currents at arbitrary depths. Geoscientific Model Development. ISSN 1991-959X. 16(22), p. 6515–6530. doi: 10.5194/gmd-16-6515-2023. Full text in Research Archive
  • Halsne, Trygve; Bohlinger, Patrik; Christensen, Kai Håkon; Carrasco, Ana & Breivik, Øyvind (2022). Resolving regions known for intense wave–current interaction using spectral wave models: A case study in the energetic flow fields of Northern Norway. Ocean Modelling. ISSN 1463-5003. 176. doi: 10.1016/j.ocemod.2022.102071. Full text in Research Archive
  • Sætra, Øyvind; Halsne, Trygve; Carrasco, Ana; Breivik, Øyvind; Pedersen, Torstein & Christensen, Kai Håkon (2021). Intense Interactions between Ocean Waves and Currents Observed in the Lofoten Maelstrom. Journal of Physical Oceanography. ISSN 0022-3670. 51(11), p. 3461–3476. doi: 10.1175/JPO-D-20-0290.1.
  • Nøst, Ole Anders & Børve, Eli (2021). Flow separation, dipole formation, and water exchange through tidal straits. Ocean Science. ISSN 1812-0784. 17(5), p. 1403–1420. doi: 10.5194/os-17-1403-2021. Full text in Research Archive

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Published Feb. 9, 2022 2:28 PM - Last modified Feb. 23, 2022 10:58 AM