Akvaplan-niva offers advanced modelling of currents, water circulation, dispersion and wave exposure in coastal and marine areas. The models provide a stronger basis for assessing environmental impact, risk, site selection and potential mitigation measures related to discharges, coastal interventions and activities at sea.

We have adapted the hydrodynamic model tool FVCOM for simulating currents and water circulation in complex coastal areas. In addition, we use other ocean models and analytical tools, and tailor the model setup to local conditions and specific challenges. This makes it possible to calculate how currents, particles and dissolved substances move through fjords, coastal areas and open ocean environments.

We carry out dispersion modelling of: • discharges from pipes, including particulate and dissolved pollution

• discharges, sedimentation and organic loading from aquaculture sites, such as feed waste and faeces

• salmon lice, algae, viruses, bacteria and other biological particles

• chemicals, including processes such as degradation, dilution and oxygen consumption

• particle dispersion from dredging, land reclamation, constructions and other marine industries

• plankton and other natural components in the water column

The models can be used to assess dispersion patterns, areas of influence, concentrations, seabed impact, exposure and risk to surrounding environmental values or nearby activities. The results may also be used as documentation in environmental impact assessments, permit applications, site evaluations and the planning of monitoring programmes or mitigation measures.

In addition to hydrodynamic modelling, we have experience with calculations of discharge trapping depth for pipe outlets.

We also offer wave modelling using models such as CMS-Wave and SWAN. This can be used to assess wave exposure, design wave conditions, effects of coastal structures and interventions, as well as the risk of wave run-up and overtopping. Such calculations are relevant for coastal protection, land reclamation, harbour areas, infrastructure and the establishment of marine installations.

Through interdisciplinary collaboration between oceanographers, biologists and ecotoxicologists, we can link physical modelling with biological and environmental effects. This allows us to deliver analyses that not only show where currents or discharges move, but also what this may mean for the environment, operations and decision-making.