Blar i NTNU Open på forfatter "Halleraker, Jo Halvard"

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    • 100 key questions to guide hydropeaking research 

      Hayes, Daniel; Bruno, Maria Cristina; Alp, Maria; Boavida, Isabel; Batalla, Ramon J.; Bejarano, Maria Dolores; Noack, Markus; Vanzo, Davide; Casas-Mulet, Roser; Vericat, Damia; Carolli, Mauro; Tonolla, Diego; Halleraker, Jo Halvard; Gosselin, Marie-Pierre; Chiogna, Gabriele; Zolezzi, Guido; Venus, Terese E. (Peer reviewed; Journal article, 2023)
      As the share of renewable energy grows worldwide, flexible energy production from peak-operating hydropower and the phenomenon of hydropeaking have received increasing attention. In this study, we collected open research ...

    • By-pass valves in hydropower plants: An ecologically important measure to mitigate stranding in rivers due to emergency turbine flow shutdown 

      Halleraker, Jo Halvard; Natvik, Eirik Vee; Vaskinn, Kjetil Arne; L´Abée-Lund, Jan Henning; Alfredsen, Knut Tore (Journal article; Peer reviewed, 2023)
      Hydropeaking operations or accidental shutdown in hydropower (HP) plants lead to rapid reduction in river flows downstream HP outlets and cause severe stranding of biota. Stranding of fish in dewatered riverbeds is a major ...

    • Classification of hydropeaking impacts on Atlantic salmon populations in regulated rivers 

      Bakken, Tor Haakon; Harby, Atle; Forseth, Torbjørn; Ugedal, Ola; Sauterleute, Julian Friedrich; Halleraker, Jo Halvard; Alfredsen, Knut (Peer reviewed; Journal article, 2021)
      This article proposes and demonstrates a new classification system of fish population level effects of hydropeaking operations in rivers. The classification of impacts is developed along two axes; first, the hydromorphological ...

    • Flow Ramping from Hydropower Operation Evaluation of Trends and Mitigation of Peak Supply and Environmental Impacts in Norway 

      Kenawi, Mahmoud (Master thesis, 2020)
      Increased flexibility is vital in hydropower systems to meet future market demands, and work is undertaken to improve hydropower machinery to handle larger ramping rates and more frequent starts and stops. This increased ...

    • Introducing HyPeak: An international network on hydropeaking research, practice, and policy 

      Alp, Maria; Batalla, Ramon J.; Bejarano, Maria Dolores; Boavida, Isabel; Carpa, Hervé; Carolli, Mauro; Casas-Mulet, Roser; Costa, Maria; Halleraker, Jo Halvard; Hauer, Christoph; Hayes, Daniel; Harby, Atle; Noack, Markus; Palau, A.; Schneider, Matthias; Schönfelder, Lennart Hagen; Tonolla, Diego; Vanzo, Davide; Venus, Terese E.; Vericat, Damia; Zolezzi, Guido; Bruno, Maria Cristina (Peer reviewed; Journal article, 2022)
      An increase in the demand for renewable energy is driving hydropower development and its integration with variable renewable energy sources. When hydropower is produced flexibly from hydropower plants, it causes rapid and ...

    • Raske vannstandsendringer i elver - Virkninger på fisk, bunndyr og begroing 

      Harby, Atle; Alfredsen, Knut; Arnekleiv, Jo Vegar; Flodmark, Lars Erik Wilhelm; Halleraker, Jo Halvard; Johansen, Stein W; Saltveit, Svein Jakob (SINTEF Rapport;, Research report, 2004)

    • Towards an automatic characterization of riverscape development by deep learning 

      Alfredsen, Knut; Dalsgård, Arild; Shamsaliei, Saeid; Halleraker, Jo Halvard; Gundersen, Odd Erik (Peer reviewed; Journal article, 2021)
      Riverscapes are under pressure from anthropogenic development, and this challengesthe conservation of biodiversity, hydromorphology and land types. To assess changesand restoration potential, an understanding of alteration ...