Publications by EFG staff

2012

  • Seim K.S., Fer I., Avlesen H.
    Stratified flow over complex topography: A model study of the bottom drag and associated mixing
    Continental Shelf Research, Volume 34, 15 February 2012, Pages 41-52
    DOI: 10.1016/j.csr.2011.11.016

2011

  • Rygg, K., Alendal, G., and Haugan, P.M.
    Flow over a rounded backward-facing step, using a z-coordinate model and a σ-coordinate model
    Ocean Dynamics, 2011.
    DOI: 10.1007/s10236-011-0434-3
  • Ali, A., Thiem, Ø. and Berntsen J
    Numerical modeling of organic waste dispersion from marine fish farms with consideration to topography variations
    BCCS Technical Report Series, No. 28, October 2010.
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  • Torsvik, T., Avlesen, H., and Thiem, Ø
    Tracking of passive, neutrally buoyant particles using the Bergen Ocean Model
    BCCS Technical Report Series, No. 27, January 2011.
    Download the report

2010

  • Bigalke, N. K., Enstad, L. I., Redher, G. and Alendal G.
    Terminal velocities of pure and hydrate coated CO2 droplets and CH4 bubbles rising in a simulated oceanic environment
    Deep Sea Research, 57, (9), 1102-1110, 2010.
  • Bergh, J.
    Nonhydrostatic pressure in ocean models with focus on wind driven internal waves
    PhD Thesis, University of Bergen, ISBN 978-82-308-0967-9
    Thesis available from BORA
  • Bergh, J. and Berntsen, J.
    The surface boundary condition in nonhydrostatic ocean models
    Ocean Dynamics, 60, 317-330, 2010.
  • Torsvik, T., Paris, R., Didenkulova, I., Pelinovsky, E., Belousov, A., and Belousova, M.
    Numerical simulation of a tsunami event during the 1996 volcanic eruption in Karymskoye lake, Kamchatka, Russia
    Natural Hazards and Earth System Sciences, 10, 2359-2369, 2010.
    Download the article
  • Rygg, K., Alendal, G., and Haugan, P.M.
    A study of flow over a backward-facing step and flow over a depression, using the 2D version of Bergen Ocean Model
    BCCS Technical Report Series, No. 26, January 2010.
    Download the report

2009

  • Bergh, J. and Berntsen, J.
    Numerical studies of wind forced waves with a nonhydrostatic model
    Ocean Dynamics, 59, 1025-1041, 2009.
  • Bergh, J,. and Berntsen J.
    Numerical studies of nonhydrostatic pressure effects on the wind forced boundary layer dynamics
    BCCS Technical Report Series, No. 25, October 2009.
    Download the report
  • Torsvik, T., Didenkulova, I., Soomere, T., and Parnell, K.
    Variability in spatial patterns of long nonlinear waves from fast ferries in Tallinn Bay
    Nonlinear Processes in Geophysics 16(2): 351-363, 2009.
    Part of NPG - Special Issue: Extreme surface and internal waves, Editors: E. Pelinovsky, R. Grimshaw, and I. Didenkulova
    Download the article
  • Torsvik, T., Pedersen, G., and Dysthe, K.
    Waves Generated by a Pressure Disturbance Moving in a Channel with a Variable Cross-Sectional Topography
    Journal of Waterway, Port, Coastal, and Ocean Engineering 135(3): 120-123, 2009.
  • Thiem, Ø. and Berntsen, J.
    Numerical studies of large-amplitude internal waves shoaling and breaking at shelf slopes
    Ocean Dynamics 59(6): pages 937-952, 2009.
  • Rygg, K., Enstad, L. I. and Alendal, G.
    Simulating transport of CO2 through a liquid surface using a z- and a sigma- coordinate model
    Ocean Dynamics 59(6): pages 795-808, 2009.
    doi: 10.1007/s10236-009-0211-8

2008

  • Thiem, Ø., Berntsen, J., Selvikvåg, K., and Fosså, J.H.
    Numerical study of particle encounters with an idealized coral reef with focus on grid resolutions and viscosities.
    BCCS Technical Report Series, No. 24, November 2008.
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  • Torsvik, T. and Soomere, T.
    Simulation of Patterns of Wakes from High-Speed Ferries in Tallinn Bay.
    Estonian Journal of Engineering 14(3): 232-254, 2008.
    doi: 10.3176/eng.2008.3.04
    Download the article
  • Torsvik, T., Pedersen, G., and Dysthe, K.
    Influence of Cross Channel Depth Variation on Ship Wave Patterns.
    E-print series, Department of Mathematics, University of Oslo.
    Mechanics and Applied Mathematics, No. 2, ISSN 0809-4403, August 2008
    Download the report
  • Torsvik, T.
    Scalable linear solvers for the non-hydrostatic pressure calculation in the Bergen Ocean Model
    BCCS Technical Report Series, No. 23, September 2008
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  • Enstad, L. I., Rygg, K., Haugan, P. M. and Alendal, G.
    Dissolution of a CO2 lake, modeled by using an advanced vertical turbulence mixing scheme
    International Journal of Greenhouse Gas Control 2(4): 511-519, 2008.
    doi: 10.1016/j.ijggc.2008.04.001

2007

  • Berntsen, J. and Thiem, Ø.
    Estimating the internal pressure gradient errors in a σ-coordinate ocean model for the Nordic Seas
    Ocean Dynamics 57: 417-429, 2007.
  • Enstad, L. I., Haugan, P. M. and Alendal, G.
    Dissolution from a CO2 lake
    Geochimica et Cosmochimica Acta 71 (15): A257-A257, 2007.
  • Enstad, L.I.
    Natural seabed seeps, preparations for numerical studies
    BCCS Technical Report Series, No. 22, March 2007
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  • Berntsen, J., Mathisen, J.P., and Furnes, G.
    Numerical studies of internal solitary wave trains generated at edges in the topography.
    BCCS Technical Report Series, No. 21, March 2007
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  • Davidsen, T.S., Berntsen, J., and Alendal, G.
    Non-hydrostatic effects in a real channel with sharp topography
    BCCS Technical Report Series, No. 20, March 2007
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2006

  • Enstad, L.I., Nagaosa, R., and Alendal, G.
    Low shear turbulence structures beneath stress-driven interface with neutral and stable stratification.
    Phys. Fluids, 18(2006). DOI:10.1063/1.2204981.
  • Berntsen, J., Xing,J., and Alendal, G.
    Assessment of non-hydrostatic ocean models using laboratory scale problems.
    Continental Shelf Research, 26:1433-1447(2006).
  • Thiem, Ø., Berntsen, J., Eldevik,T., and Alendal, G.
    Gas exploration beyond the shelf break; an oceanographic challenge.
    Environmental Modelling and Software, 12:140-156(2006).
  • Alendal, G., Haugan, P.M., Gangstø., R., Caldeira, K., Adams, E., Brewer, P., Peltzer, E., Rehder, G., Sato, T., and Chen, B.
    Comment on "Fate of rising CO2 droplets in seawater".
    Environ. Sci. Technol., 40: 3653-3654(2006).
  • Thiem, Ø., Berntsen, J., and Gjevik, B.
    Development of eddies in an idealised shelf slope area, due to an along slope barotropic jet.
    Continental Shelf Research, Vol. 26, No. 12-13, pages 1481-1495, 2006. doi:10.1016/j.csr.2006.02.016
  • Thiem, Ø., Ravagnan, E., Fosså, J.H. and Berntsen, J.
    Food supply mechanisms for cold water corals along the continental shelf edge.
    Journal of Marine Systems, Vol. 60, No. 3-4, pages 207-219, 2006.
    doi:10.1016/j.jmarsys.2005.12.004
  • Thiem, Ø. and Berntsen, J.
    Internal pressure errors in sigma-coordinate ocean models due to anisotropy.
    Ocean modelling, Vol. 12, pages 140-156, 2006.
    doi:10.1016/j.ocemod.2005.05.001

2005

  • G. Alendal, J. Berntsen, E. Engum, G. Furnes, G. Kleiven, and L.I. Eide.
    Influence from "OceanWeather" on near seabed currents and events at Ormen Lange. Marine and Petroleum Geology, 22(12):21 31(2005).
  • Berntsen J. and Furnes G.,
    Internal pressure errors in sigma-coordinate ocean models--sensitivity of the growth of the flow to the time stepping method and possible non-hydrostatic effects, Continental Shelf Research, Volume 25, Issues 7-8, May 2005, Pages 829-848.
  • Enstad, L. I.
    Turbulent heat/mass transfer at oceanic interfaces, Dr. Scient. (PhD) Thesis, University of Bergen 2005, ISBN 82-308-0036-7
  • Enstad L. I., Haugan P. M., Alendal G.,
    Processes and diffusion near a liquid CO2 - Seawater interface. In Proceedings of the Seventh International Carbon Dioxide Conference, ICDC7 2005, Boulder, U. S.
  • Gangstø, R., Haugan, P.M., and Alendal, G.
    Parameterization of drag and dissolution of rising CO2 drops in seawater. Geophys. Res. Lett., 32:L10612,(2005). doi: 10.1029/2005GL022936.
  • Haugan, P.M. and Alendal, G.
    Turbulent diffusion and transport from a CO2 lake in the deep ocean. J. Geophys. Res., 110:C09S14(2005). doi:10.1029/2004JC002583.
  • Haugan, P.M., Brewer, P.G., Peltzer E.T., Walz, P., Aya, I., Yamane, K., Kojima, R., Nakajima, Y., Nakayama, N., Hove, J., Johannessen, T., Bellerby, R.G.J., and Alendal, G.
    Ocean abyssal carbon experiments at 0.7 and 4 km depth. In Proceedings of 7th International Conference on Greenhouse Gas Control Technologies. Volume 1: Peer Reviewed Papers and Plenary Presentations (2005). also available at http://www.ghgt7.ca/.
  • Hove, J. and Haugan, PM.
    Dynamics of a CO2-seawater interface in the deep ocean Journal of Marine Research, 63 (3): 563-577 may 2005
  • Nagaosa R., Enstad L. I., Alendal G.,
    Effects of density stratification on turbulence structures and turbulent heat transfer mechanism in turbulent open-channel flow, in Proceedings of the 15th International Offshore and Polar Engineering Conference, Seoul 2005
  • Thiem, Ø., Avlesen, H. og Alendal, G.
    Simulering av strømforhold i og rundt Vatlestraumen. Technical web report.
  • Thiem, Ø., Avlesen, H., Alendal, G., and Berntsen, J. (2005)
    Internal waves and internal solitones shoaling and breaking along a continental slope. Report No. 14, BCCS Technical report series, University of Bergen, Norway.
  • Torsvik, T., Thiem, Ø. and Berntsen, J.
    Stability analysis of geostrophic adjustment on hexagonal grids for regions with variable depth.
    Monthly Weather Review, Vol. 133, No. 11, pages 3335-3344, 2005.
    doi:10.1175/MWR3036.1

2004

  • Avlesen, H. and Berntsen,J. (2004)
    A 60 day hindcast study of the Norwegian Seas with focus on Ormen Lange using 20km and 4 km resolution. Report No. 10, BCCS Technical report series, University of Bergen, Norway.
  • Enstad L. I., Nagaosa R., Alendal G.,
    The effect of stable density stratification on turbulent vortical structures near an atmosphere-ocean interface driven by low wind shear, in Advances in turbulence X, ETC10 2004 Trondheim, Norway, Editors H. I. Andersson and P.-� Krogstad ISBN 84-95999-55-2
  • L. I. Enstad, R. Nagaosa, and G. Alendal.
    The effect of heat release from a gas-liquid interface on turbulence structure in fully developed shallow flows. In G. H. Jirka and W. S. J. Uijttewaal, editors, Shallow flows, pages 457-462. Balkema Publishers (2004). ISBN 90 5809 700 5.
  • Heggelund,Y. Vikebø,F. Berntsen,J. and Furnes,G.
    Hydrostatic and non-hydrostatic studies of gravitational adjustment over a slope, Continental Shelf Research, vol 24, pages 2133--2148, 2004.
  • Heimsund,B.-O. and Berntsen,J.",
    On a class of ocean model instabilities that occur when applying small time steps, implicit methods, low viscosities, Ocean Modelling, vol 7, pages 135--144, 2004.
  • Hove, J
    Title: Density of states determined from Monte Carlo simulations Source: PHYSICAL REVIEW E, 70 (5): Art. No. 056707 Part 2 NOV 2004
  • Thiem, Ø. On anisotropy and internal pressure errors in numerical ocean models, and processes near the shelf edge. Dr. Scient. (Phd) thesis, University of Bergen 2004. ISBN 82-92160-30-2. download
  • Vikebø,F. Berntsen,J. and Furnes,G.
    Numerical studies of the response of currents at Ormen Lange to travelling storms. Journal of Marine Systems, vol 45, pages 205--220, 2004.

2003

  • Vikebø, F. and Furevik,T. and Furnes,G. and Kvamstø,N.G. and Reistad,M.,
    Wave height variations in the North Sea and on the Norwegian Continental Shelf, 1881-1999, Cont. Shelf Res., vol 23, pages 251-263, 2003.