Blar i NTNU Open på forfatter "Alver, Morten"

Viser treff 1-20 av 28

    • Adaptive Underwater Robotic Sampling of Dispersal Dynamics in the Coastal Ocean 

      Berget, Gunhild Elisabeth; Eidsvik, Jo; Alver, Morten; Py, Frédéric; Grøtli, Esten Ingar; Johansen, Tor Arne (Chapter, 2022)
      To get a better understanding of the highly nonlinear processes driving the ocean, efficient and informative sampling is critical. By combining robotic sampling with ocean models we are able to choose informative sampling ...

    • Automation Concepts for Industrial-Scale Production of Seaweed 

      Solvang, Torfinn; Bale, Emil Scott; Broch, Ole Jacob; Handå, Aleksander; Alver, Morten (Peer reviewed; Journal article, 2021)
      In order to industrialize macroalgal cultivation in Norway, new automated methods and solutions for seeding, deployment and harvesting need to be developed. Today's solutions are time and resource demanding, still yielding ...

    • Campaign For Hyperspectral Data Validation In North Atlantic Coastal Waters 

      Oudijk, Esmée; Hasler, Oliver Kevin; Overaas, H; Marty, Sabine; Williamson, David; Svendsen, T; Berg, Simen; Birkeland, Roger; Halvorsen, D; Bakken, S; Henriksen, Marie Bøe; Alver, Morten; Johnsen, Geir; Johansen, Tor Arne; Stahl, Annette; Kvaløy, Pål; Dallolio, Alberto; Majaneva, Sanna; Fragoso, Glaucia Moreira; Garrett, Joseph (Peer reviewed; Journal article, 2022)
      The high photosynthetic productivity of the Mausund bank on the coast of mid-Norway has given the area important economic and ecologic value. Monitoring chlorophyll-a (chl-a) production can assist in managing the local ...

    • Capturing big fisheries data: Integrating fishers’ knowledge in a web-based decision support tool 

      Kelly, Cian; Michelsen, Finn Are; Reite, Karl Johan; Kolding, Jeppe; Varpe, Øystein; Prytz Berset, Are; Alver, Morten (Peer reviewed; Journal article, 2022)
      There is increasing interest in utilizing fishers’ knowledge to better understand the marine environment, given the spatial extent and temporal resolution of fishing vessel operations. Furthermore, fishers’ knowledge is ...

    • Data assimilation with SINMOD 

      Alver, Morten; Michelsen, Finn Are (Research report, 2015)
      Data assimilation is the process of using measured data to correct the state of a mathematical model. This report documents the data assimilation process implemented in the ocean model system SINMOD, and the tests that ...

    • Effect of cage size on oxygen levels in Atlantic salmon sea cages: A model study 

      Alver, Morten; Føre, Martin; Alfredsen, Jo Arve (Peer reviewed; Journal article, 2022)
      The supply of dissolved oxygen (DO) to salmon in sea cages depends on many interacting factors including biomass density, temperature and current speed. With other factors being equal, hypoxic conditions are more likely ...

    • Feed spreaders in sea cage aquaculture – Motion characterization and measurement of spatial pellet distribution using an unmanned aerial vehicle 

      Skøien, Kristoffer Rist; Alver, Morten; Zolich, Artur Piotr; Alfredsen, Jo Arve (Journal article; Peer reviewed, 2016)
      Pneumatic rotary feed spreaders represent essential equipment in the feeding system of present day industrial-scale sea cage aquaculture. This study presents experimentally obtained attitude measurements and corresponding ...

    • Fish welfare based classification method of ocean current speeds at aquaculture sites 

      Jónsdóttir, Kristbjörg Edda; Hvas, Malthe; Alfredsen, Jo Arve; Føre, Martin; Alver, Morten; Bjelland, Hans Vanhauwaert; Oppedal, Frode (Journal article; Peer reviewed, 2019)
      ABSTRACT: A major trend in marine aquaculture is to move production to more exposed sites with occasionally rough ocean current events. However, it is unclear whether fish will thrive in these extreme environments, since ...

    • Fôrleveranse til oppdrettsanlegg Demonstrasjon DINO – Dynamiske informasjonssystem for operativ beslutningsstøtte i kystsonen 

      Torsethaugen, Knut; Bjelland, Hans Vanhauwaert; Ellingsen, Ingrid H.; knudsen, øyvind; Alver, Morten; Haugen, Tony Idar; Sanne, Finn Otto; Bjarnar, Morten Lund; Hjøllo, Bjørn Åge; Høylandskjær, Ståle; Flægstad, Frode; Neshaug, Vegard; Ording, Svein (Research report, 2012)
      Rapporten beskriver planlegging og gjennomføringen av en tenkt forleveranse til ACE sitt oppdrettsanlegg på Tristein. Hensikten var å vise hvordan teknologi og beslutningsstøttesystem, som er videreutviklet i prosjektet, ...

    • High speed color 3D scanner - using NVIDIA Jetson 

      Gerritsen, Rubin Ingwer (Master thesis, 2017)
      Automatic quality grading of food products is often performed by machine vision systems. The maximum performance of such a system is determined by the amount and quality of the data used. A 3D color scanner is able to ...

    • High-resolution numerical modelling of a marine mine tailings discharge in Western Norway 

      Nepstad, Raymond; Muñoz, Maria Liste; Alver, Morten; Nordam, Tor; Davies, Emlyn John; Glette, Tormod (Peer reviewed; Journal article, 2020)
      Waste from mining operations includes mine tailings, a slurry of fine-grained mineral particles and processing chemicals that remains after the desired compounds have been extracted from the ore. In some cases, the method ...

    • Hydrogen Sulfide Detection through Salmon Juvenile Monitoring with Stereo Vision and Machine Learning 

      Eide, Lotte (Master thesis, 2023)
      Bakgrunn: Utvidelsen av landbaserte produksjonsfaser i lakseoppdrett er en voksende trend innen akvakulturindustrien. Reduksjon av tid tilbrakt på sjøen kan gi mange fordeler, men utviklingen av landbaserte fasiliteter ...

    • Information-driven robotic sampling in the coastal ocean 

      Fossum, Trygve Olav; Eidsvik, Jo; Ellingsen, Ingrid H.; Alver, Morten; Fragoso, Glaucia Moreira; Johnsen, Geir; mendes, renato; Ludvigsen, Martin; Rajan, Kanna (Journal article; Peer reviewed, 2018)
      Efficient sampling of coastal ocean processes, especially mechanisms such as upwelling and internal waves and their influence on primary production, is critical for understanding our changing oceans. Coupling robotic ...

    • Intrinsic settling rate and spatial diffusion properties of extruded fish feed pellets 

      Skøien, Kristoffer Rist; Aas, Turid Synnøve; Alver, Morten; Romarheim, Odd Helge; Alfredsen, Jo Arve (Journal article; Peer reviewed, 2016)
      Spatial and temporal feed distribution in sea cages are important factors for the farmer, fish and environment due to the strong relation to growth, feed loss, pollution and welfare. This study presents a set of experimentally ...

    • Machine learning for identification of features in ocean model and remote sensing data 

      Wanvik, Even (Master thesis, 2020)
      Å forutsi havdynamikk ved bruk av numeriske modeller er utfordrende på grunn av uforutsigbare ikke-lineariteter og begrenset tilgang til fysiske observasjoner. Havvirvler utgjør konseptuelle og praktiske utfordringer for ...

    • Minimere drivstofforbruk for servicefartøy brukt i oppdrettsnæringen ved analyse av driftsdata 

      Haugen, Bård Odin (Master thesis, 2020)
      Denne oppgaven har som hensikt å se på hvordan drivstofforbruket hos en servicebåt brukt i oppdrettsnæringen varierer med hvordan den opereres. Båten styres i all hovedsak ved å endre på to parametere, propellens ...

    • Modelling and simulation of rotary feed spreaders with application to sea cage aquaculture – A study of common and alternative designs 

      Skøien, Kristoffer Rist; Alver, Morten; Alfredsen, Jo Arve (Journal article; Peer reviewed, 2018)
      Rotary feed spreaders are extensively used in large scale fish aquaculture and are tasked with distributing pelletized feed in a spatially uniform manner over the water surface. Questions have been raised with respect to ...

    • Modelling how the physical scale of experimental tanks affects salmon growth performance 

      Føre, Martin; Alver, Morten; Alfredsen, Jo Arve; Senneset, Gunnar; Espmark, Åsa Maria Olofsdotter; Terjesen, Bendik Fyhn (Journal article; Peer reviewed, 2018)
      In this study, we explored the potential of using mathematical models for studying the effects of physical scale of production units on the growth performance of Atlantic salmon (Salmo salar L.). Atlantic salmon are typically ...

    • Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway 

      Broch, Ole Jacob; Ellingsen, Ingrid H.; Forbord, Silje; Wang, Xinxin; Volent, Zsolt; Alver, Morten; Handå, Aleksander; Andresen, Kjersti; Slagstad, Dag; Reitan, Kjell Inge; Olsen, Yngvar; Skjermo, Jorunn (Journal article; Peer reviewed, 2013)
      A 3-dimensional hydrodynamic−ecological model system (SINMOD) was used to estimate the full-scale cultivation potential of the brown alga Saccharina latissima in integrated multi-trophic aquaculture (IMTA) with Atlantic ...

    • Multiscale modelling of cage effects on the transport of effluents from open aquaculture systems 

      Broch, Ole Jacob; Pascal, Klebert; Michelsen, Finn Are; Alver, Morten (Peer reviewed; Journal article, 2020)
      Most Atlantic salmon mariculture operations use open sea cages for the grow out phase. The ultimate fate and effects of the effluents and the possibilities of disease transfer between fish farms are major concerns for ...