Search Results - "Nepstad, Raymond"

A Digital Twin of the Trondheim Fjord for Environmental Monitoring—A Pilot Case by Vasilijevic, Antonio, Brönner, Ute, Dunn, Muriel, García-Valle, Gonzalo, Fabrini, Jacopo, Stevenson-Jones, Ralph, Bye, Bente Lilja, Mayer, Igor, Berre, Arne, Ludvigsen, Martin, Nepstad, Raymond

“…Digital Twins of the Ocean (DTO) are a rapidly emerging topic that has attracted significant interest from scientists in recent years. The initiative, strongly…”
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Spatiotemporal Dispersal and Deposition of Fish Farm Wastes: A Model Study from Central Norway by Broch, Ole J., Daae, Ragnhild L., Ellingsen, Ingrid H., Nepstad, Raymond, Bendiksen, Eldar Å., Reed, Jenny L., Senneset, Gunnar

“…Abstract A spatially explicit coupled hydrodynamic-mass transport model system was used to simulate dispersal of particulate organic matter from Atlantic…”
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In situ characterisation of complex suspended particulates surrounding an active submarine tailings placement site in a Norwegian fjord by Davies, Emlyn J., Nepstad, Raymond

“…Suspended particle measurements over flood and ebb transects of a Norwegian fjord (Frænfjorden) with an active submarine mine tailings placement are presented…”
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On the use of random walk schemes in oil spill modelling by Nordam, Tor, Nepstad, Raymond, Litzler, Emma, Röhrs, Johannes

“…In oil spill models, vertical mixing due to turbulence is commonly modelled by random walk. If the eddy diffusivity varies with depth, failing to take the…”
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Impact of flow field resolution on produced water transport in Lagrangian and Eulerian models by Nepstad, Raymond, Nordam, Tor, Ellingsen, Ingrid H., Eisenhauer, Lionel, Litzler, Emma, Kotzakoulakis, Konstantinos

“…During offshore petroleum production, large volumes of produced water are continuously discharged. The environmental impact from such discharges is typically…”
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Numerical analysis of boundary conditions in a Lagrangian particle model for vertical mixing, transport and surfacing of buoyant particles in the water column by Nordam, Tor, Kristiansen, Ruben, Nepstad, Raymond, Röhrs, Johannes

“…Lagrangian particle models are used for many applications in the ocean sciences, including transport modelling of oil spills, fish eggs and larvae, plastics,…”
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Modelling and validation of polycyclic aromatic hydrocarbons emissions from offshore oil production facilities by Aghito, Manuel, Pampanin, Daniela M., Nepstad, Raymond, Hole, Lars Robert, Breivik, Øyvind

“…The development of numerical models for investigating the risks and impact caused by human activities to the marine environment is important. Herein, the…”
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An impact-based environmental risk assessment model toolbox for offshore produced water discharges by Nepstad, Raymond, Kotzakoulakis, Konstantinos, Hansen, Bjørn Henrik, Nordam, Tor, Carroll, JoLynn

“…We present a novel approach to environmental risk assessment of produced water discharges based on explicit impact and probability, using a combination of…”
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Reflections on philosophy of nanoscience from nanoscience practitioners by Wickson, Fern, Nepstad, Raymond, Åm, Trond, Winkler, Mathias

“…In this paper we present findings from an experiment involving both scientists working at the nanoscale and philosophers interested in this emerging field of…”
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Measuring environmental concentrations of hydrogen peroxide following bath treatment by Alvestad, Anja H., Daae, Ragnhild L., Nepstad, Raymond

“…Measurements of environmental concentrations of hydrogen peroxide following bath treatment at a Norwegian fish farming site was performed by using a flexible,…”
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North sea produced water PAH exposure and uptake in early life stages of Atlantic Cod by Nepstad, Raymond, Hansen, Bjørn Henrik, Skancke, Jørgen

“…Produced water discharges from offshore oil and gas platforms represent a significant source of petroleum components such as polycyclic aromatic hydrocarbons…”
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Improving oil spill trajectory modelling in the Arctic by Nordam, Tor, Beegle-Krause, CJ, Skancke, Jørgen, Nepstad, Raymond, Reed, Mark

“…As petroleum development and other activities move further north, the potential for oil spills in ice-covered waters is of great concern. As a tool for…”
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Effects of Exposure Timing on cyp1a Expression, PAH Elimination, and Lipid Utilization in Lumpfish Embryos Exposed to Produced Water by Hansen, Bjørn Henrik, Arukwe, Augustine, Knutsen, Hannah Marie, Skarpnord, Kaja, Farkas, Julia, Veylit, Lara, Nepstad, Raymond, Khan, Essa Ahsan, Nordtug, Trond, Sørensen, Lisbet

“…Intentional discharges of produced water from oil production platforms to the marine environment contain a complex mixture of toxicants, including polycyclic…”
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Dynamic Links between Lipid Storage, Toxicokinetics and Mortality in a Marine Copepod Exposed to Dimethylnaphthalene by Jager, Tjalling, Øverjordet, Ida Beathe, Nepstad, Raymond, Hansen, Bjørn Henrik

“…Efficiently assessing and managing the risks of pollution in the marine environment requires mechanistic models for toxic effects. The General Unified…”
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Toxicokinetics of Crude Oil Components in Arctic Copepods by Øverjordet, Ida Beathe, Nepstad, Raymond, Hansen, Bjørn Henrik, Jager, Tjalling, Farkas, Julia, Altin, Dag, Brönner, Ute, Nordtug, Trond

“…The risk of accidental oil spills in the Arctic is on the rise due to increased shipping and oil exploration activities, making it essential to calibrate…”
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Mind the gap – Relevant design for laboratory oil exposure of fish as informed by a numerical impact assessment model by Frøysa, Håvard G., Nepstad, Raymond, Meier, Sonnich, Donald, Carey, Sørhus, Elin, Bockwoldt, Mathias, Carroll, JoLynn, Vikebø, Frode B.

“…Laboratory experiments provide knowledge of species-specific effects thresholds that are used to parameterize impact assessment models of oil contamination on…”
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Assessing impacts of simulated oil spills on the Northeast Arctic cod fishery by Carroll, JoLynn, Vikebø, Frode, Howell, Daniel, Broch, Ole Jacob, Nepstad, Raymond, Augustine, Starrlight, Skeie, Geir Morten, Bast, Radovan, Juselius, Jonas

“…We simulate oil spills of 1500 and 4500m3/day lasting 14, 45, and 90days in the spawning grounds of the commercial fish species, Northeast Arctic cod. Modeling…”
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An annual profile of the impacts of simulated oil spills on the Northeast Arctic cod and haddock fisheries by Carroll, JoLynn, Frøysa, Håvard G., Vikebø, Frode, Broch, Ole Jacob, Howell, Daniel, Nepstad, Raymond, Augustine, Starrlight, Skeie, Geir Morten, Bockwoldt, Mathias

“…We simulate the combined natural and pollutant-induced survival of early life stages of NEA cod and haddock, and the impact on the adult populations in…”
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An annual profile of the impacts of simulated oil spills on the Northeast Arctic cod and haddock fisherie by Carroll, JoLynn, Frøysa, Håvard Guldbrandsen, Vikebø, Frode Bendiksen, Broch, Ole Jacob, Nepstad, Raymond, Augustine, Starrlight, Skeie, Geir Morten, Bockwoldt, Mathias, Howell, Daniel

“…We simulate the combined natural and pollutant-induced survival of early life stages of NEA cod and haddock, and the impact on the adult populations in…”
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Simple energy-budget model for yolk-feeding stages of Atlantic cod (Gadus morhua) by Jager, Tjalling, Nepstad, Raymond, Hansen, Bjørn Henrik, Farkas, Julia

“…[Display omitted] •A simple, generic, energy-budget model was tested on fish embryo development.•The model was calibrated on extensive data for Atlantic cod…”
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