Blar i Bergen Open Research Archive på forfatter "Alendal, Guttorm"

Viser treff 21-29 av 29

    • Parameterization of drag and dissolution of rising CO2 drops in seawater 

      Gangstø, Reidun; Haugan, Peter Mosby; Alendal, Guttorm (Journal article, 2005-05-24)
      In this work the dynamics and dissolution of a hydratecovered CO2 drop were studied, using a numeric model and data from one of very few CO2 experiments performed in the real ocean. A theory including the standard drag ...

    • PVTx Properties of a Two-phase CO2 Jet from Ruptured Pipeline 

      Botnen, Helle Augdal; Omar, Abdirahman; Aavatsmark, Ivar; Alendal, Guttorm; Johannessen, Truls (Peer reviewed; Journal article, 2013)
      Span and Wagner equation of state (SW EOS) have been used to investigate changes in the thermodynamic properties of CO2 during a depressurization process from a pipeline into marine environment. The process is assumed to ...

    • Semi-conditional variational auto-encoder for flow reconstruction and uncertainty quantification from limited observations 

      Gundersen, Kristian; Oleynik, Anna; Blaser, Nello; Alendal, Guttorm (Journal article; Peer reviewed, 2021)
      We present a new data-driven model to reconstruct nonlinear flow from spatially sparse observations. The proposed model is a version of a Conditional Variational Auto-Encoder (CVAE), which allows for probabilistic ...

    • Simulating spatial and temporal varying CO2 signals from sources at the seafloor to help designing risk-based monitoring programs 

      Ali, Alfatih Omer Mohammed Ahmed; Frøysa, Håvard G; Avlesen, Helge; Alendal, Guttorm (Peer reviewed; Journal article, 2016-01)
      Risk-based monitoring requires quantification of the probability of the design to detect the potentially adverse events. A component in designing the monitoring program will be to predict the varying signal caused by an ...

    • Survey strategies to quantify and optimize detecting probability of a CO2 seep in a varying marine environment 

      Hvidevold, Hilde Kristine; Alendal, Guttorm; Johannessen, Truls; Ali, Alfatih Omer Mohammed Ahmed (Peer reviewed; Journal article, 2016-09)
      Designing a marine monitoring program that detects CO2 leaks from subsea geological storage projects is challenging. The high variability of the environment may camouflage the anticipated anisotropic signal from a leak and ...

    • Topographic effects on CO2, diffusion and dissolution from the seafloor 

      Rygg, Kristin; Enstad, Lars Inge; Alendal, Guttorm; Haugan, Peter Mosby (Peer reviewed; Journal article, 2009-02)
      At 3000 meters depth liquid CO2 is denser than seawater and hence will be stored as a “lake” on the deep ocean floor, which is expected to gradually be dissolved in seawater. Ocean currents and turbulence will influence ...

    • Towards improved monitoring of offshore carbon storage: A real-world field experiment detecting a controlled sub-seafloor CO2 release 

      Flohr, Anita; Schaap, Allison; Achterberg, Eric P.; Alendal, Guttorm; Arundell, Martin; Berndt, Christian; Blackford, Jeremy; Bröttner, Christoph; Borisov, Sergey M.; Brown, Robin; Bull, Jonathan M.; Carter, Liam; Chen, Baixin; Dale, Andrew W.; De Beer, Dirk; Dean, Marcella; Deusner, Christian; Dewar, Marius; Durden, Jennifer M.; Elsen, Saskia; Esposito, Mario; Faggetter, Michael; Fischer, Jan P.; Gana, Amine; Gros, Jonas; Haeckel, Matthias; Hanz, Rudolf; Holtappels, Moritz; Hosking, Brett; Huvenne, Veerle A.I.; James, Rachael H.; Koopmans, Dirk; Kossel, Elke; Leighton, Timothy G.; Li, Jianghui; Lichtschlag, Anna; Linke, Peter; Loucaides, Socratis; Martínez-Cabanas, María; Matter, Juerg M.; Mesher, Thomas; Monk, Samuel; Mowlem, Matthew C.; Oleynik, Anna; Papadimitriou, Stathys; Paxton, David; Pearce, Christopher R.; Peel, Kate; Roche, Ben; Connelly, Douglas (Journal article; Peer reviewed, 2021)
      Carbon capture and storage (CCS) is a key technology to reduce carbon dioxide (CO2) emissions from industrial processes in a feasible, substantial, and timely manner. For geological CO2 storage to be safe, reliable, and ...

    • Turbulent diffusion and transport from a CO2 lake in the deep ocean 

      Haugan, Peter Mosby; Alendal, Guttorm (Journal article, 2005-09-21)
      If liquid CO2 is stored as a dense ‘‘lake’’ on the deep ocean floor, it is expected to dissolve in seawater. Ocean currents and turbulence can increase the net rate of CO2 release by several orders of magnitude compared ...

    • Two-phase, near-field modeling of purposefully released CO2 in the ocean 

      Alendal, Guttorm; Drange, Helge (Journal article; Peer reviewed, 2001-01-15)