Trulsen, K.,  Stansberg, C. T. & Dysthe, K. B.   2025   Experimental evidence of transverse modulation and frequency downshift of uniform waves in a long tank.  J. Fluid Mech. 1024, A14 (30 pages).

Samseth, K. & Trulsen, K.   2025   Extreme statistics of wave forces on a horizontal cylinder behind a shoal.  J. Fluid Mech. 1007, A59 (20 pages).

Vanem, E., Gramstad, O., Babanin, A., De Bin, R. & Trulsen, K.   2024   On the distribution of ocean wave crest heights in varying wave conditions.   Ocean Engineering and Marine Energy 10, 797–815.

Bitner-Gregersen, E.M., Gramstad, O., Trulsen, K., Magnusson, A.K., Støle-Hentschel, S., Aarnes, O.J. & Breivik, Ø.  2024   Rogue Waves: Results of the ExWaMar Project.  Ocean Engineering 292, 116543 (15 pages).

Lawrence, C., Trulsen, K. & Gramstad, O.  2022  Extreme wave statistics of surface elevation and velocity field of gravity waves over a two-dimensional bathymetry.  J. Fluid Mech. 939, A41 (18 pages).

Lawrence, C., Trulsen, K. & Gramstad, O.  2021  Statistical properties of wave kinematics in long-crested irregular waves propagating over non-uniform bathymetry.  Phys. Fluids 33, 046601 (13 pages).

Støle-Hentschel, S., Nieto Borge, J.C. & Trulsen, K.   2021  The deconvolution as a method to deal with gaps in ocean wave measurements.   Ocean Engineering 219, 108373 (11 pages).

Lawrence, C., Gramstad, O. & Trulsen, K.   2020   Variational Boussinesq model for kinematics calculation of surface gravity waves over bathymetry.   Wave Motion 100, 102665 (16 pages).

Støle-Hentschel, S., Trulsen, K., Nieto Borge, J. C. & Olluri, S.   2020   Extreme wave statistics in combined and partitioned windsea and swell.   Water Waves 2, 169-184.

Trulsen, K., Raustøl, A., Jorde, S. & Rye, L. B.   2020   Extreme wave statistics of longcrested irregular waves over a shoal.   J. Fluid Mech. 882, R2 (11 pages).

Støle-Hentschel, S., Trulsen, K., Rye, L. B. & Raustøl, A.   2018   Extreme wave statistics of counter-propagating, irregular, long-crested sea states.   Phys. Fluids 30, 067102 (8 pages).   DUO

Gramstad, O., Bitner-Gregersen, E., Trulsen, K. & Nieto Borge, J. C.   2018   Modulational instability and rogue waves in crossing sea states.   Journal of Physical Oceanography 48, 1317-1331.

Støle-Hentschel, S., Seemann, J., Nieto Borge, J. C. & Trulsen, K.   2018   Consistency between sea surface reconstructions from nautical X-band radar Doppler and amplitude measurements.   Journal of Atmospheric and Oceanic Technology 35, 1201-1220.   DUO

Simanesew, A., Krogstad, H. E., Trulsen, K. & Nieto Borge, J. C.   2018   Bimodality of directional distributions in ocean wave spectra: A comparison of data-adaptive estimation techniques.   Journal of Atmospheric and Oceanic Technology 35, 365-384.   DUO

Simanesew, A., Trulsen, K., Krogstad, H. E. & Nieto Borge, J. C.   2017   Surface wave predictions in weakly nonlinear directional seas.   Appl. Ocean Res. 65, 79-89.   DUO

Taklo, T. M. A., Trulsen, K., Krogstad, H. E. & Nieto Borge, J. C.   2017   On dispersion of directional surface gravity waves.   J. Fluid Mech. 812, 681-697.   DUO

Simanesew, A., Krogstad, H. E., Trulsen, K. & Nieto Borge, J. C.   2016   Development of frequency-dependent ocean wave directional distributions.   Appl. Ocean Res. 59, 304-312.   DUO

Trulsen, K., Nieto Borge, J. C., Gramstad, O., Aouf, L. & Lefèvre, J.-M.  2015   Crossing sea state and rogue wave probability during the Prestige accident.   J. Geophys. Res. 120 (10), 7113-7136.   DUO

Taklo, T. M. A., Trulsen, K., Gramstad, O., Krogstad, H. E. & Jensen, A.   2015   Measurement of the dispersion relation for random surface gravity waves.   J. Fluid Mech. 766, 326-336.   DUO

Naaijen, P., Trulsen, K. & Blondel-Couprie, E.   2014   Limits to the extent of the spatio-temporal domain for deterministic wave prediction.   International Shipbuilding Progress 61 (3-4), 203-223.

Gramstad, O., Zeng, H., Trulsen, K. & Pedersen, G. K.   2013   Freak waves in weakly nonlinear unidirectional wave trains over a sloping bottom in shallow water.   Phys. Fluids 25 (12), 122103 (14 pages).

Trulsen, K., Zeng, H. & Gramstad, O.   2012   Laboratory evidence of freak waves provoked by non-uniform bathymetry.   Phys. Fluids 24 (9), 097101 (10 pages). [Full-text at DUO]

Zeng, H. & Trulsen, K.   2012   Evolution of skewness and kurtosis of weakly nonlinear unidirectional waves over a sloping bottom.   Nat. Hazards Earth Syst. Sci. 12, 631-638.

Gramstad, O. & Trulsen, K.   2011   Fourth-order coupled nonlinear Schrödinger equations for gravity waves on deep water.   Phys. Fluids 23, 062102 (9 pages).

Gramstad, O. & Trulsen, K.   2011   Hamiltonian form of the modified nonlinear Schrödinger equation for gravity waves on arbitrary depth.   J. Fluid Mech. 670, 404-426.

Toffoli, A., Gramstad, O., Trulsen, K., Monbaliu, J., Bitner-Gregersen, E. & Onorato, M.   2010   Evolution of weakly nonlinear random directional waves: laboratory experiments and numerical simulations.   J. Fluid Mech. 664, 313-336.

Krogstad, H. E. & Trulsen, K.   2010   Interpretations and observations of ocean wave spectra.   Ocean Dynamics 60, 973-991.

Gramstad, O. & Trulsen, K.   2010   Can swell increase the number of freak waves in a wind-sea?   J. Fluid Mech. 650, 57-79.

Hjelmervik, K. B. & Trulsen, K.   2009   Freak wave statistics on collinear currents.   J. Fluid Mech. 637, 267-284.

Onorato, M, Waseda, T., Toffoli, A., Cavaleri, L., Gramstad, O., Janssen, P. A. E. M., Kinoshita, T., Monbaliu, J., Mori, N., Osborne, A. R., Serio, M., Stansberg, C. T., Tamura, H. & Trulsen, K.   2009   Statistical Properties of Directional Ocean Waves: The Role of the Modulational Instability in the Formation of Extreme Events. Phys. Rev. Lett., 102, 114502 (4 pages).

Onorato, M., Cavaleri, L., Fouques, S., Gramstad, O., Janssen, P.A.E.M., Monbaliu, J., Osborne, A.R., Pakozdi, C., Serio, M., Stansberg, C.T., Toffoli, A. & Trulsen, K.   2009   Statistical properties of mechanically generated surface gravity waves: a laboratory experiment in a three dimensional wave basin. J. Fluid Mech. 627, 235-257.

Gramstad, O. & Trulsen, K.   2007   Influence of crest and group length on the occurrence of freak waves.   J. Fluid Mech. 582, 463-472.

Socquet-Juglard, H., Dysthe, K., Trulsen, K., Krogstad, H. E. & Liu, J.   2005   Probability distributions of surface gravity waves during spectral changes.   J. Fluid Mech. 542, 195-216.

Liu, J., Krogstad, H. E., Trulsen, K., Dysthe, K. & Socquet-Juglard, H.   2005   The statistical distribution of a nonlinear ocean surface.   International Journal of Offshore and Polar Engineering 15, 168-174.

Dysthe, K. B., Trulsen, K., Krogstad, H. E. & Socquet-Juglard, H.   2003   Evolution of a narrow band spectrum of random surface gravity waves.   J. Fluid Mech. 478, 1-10.

Morozov, E. G., Trulsen, K., Velarde, M. G. & Vlasenko, V. I.   2002   Internal tides in the Strait of Gibraltar.   J. Phys. Oceanography 32, 3193-3206.

Trulsen, K., Gudmestad, O. T. & Velarde, M. G.   2001   The nonlinear Schrödinger method for water wave kinematics on finite depth.   Wave Motion 33, 379-395.

Trulsen, K., Kliakhandler, I., Dysthe, K. B. & Velarde, M. G.   2000   On weakly nonlinear modulation of waves on deep water.   Phys. Fluids 12 (10), 2432-2437.

Trulsen, K., Stansberg, C. T. & Velarde, M. G.   1999   Laboratory evidence of three-dimensional frequency downshift of waves in a long tank.   Phys. Fluids 11 (1), 235-237.

Trulsen, K.   1999   Wave kinematics computed with the nonlinear Schrödinger method for deep water.   J. Offshore Mechanics and Arctic Engineering 121 (2), 126-130.

Dysthe, K. B. & Trulsen, K.   1999   Note on breather type solutions of the NLS as models for freak-waves.   Physica Scripta T82, 48-52.

Trulsen, K.   1998   Crest pairing predicted by modulation theory.   J. Geophys. Res. 103 (C2), 3143-3148.

Trulsen, K. & Dysthe, K. B.   1997   Frequency downshift in three-dimensional wave trains in a deep basin.   J. Fluid Mech. 352, 359-373.

Trulsen, K. & Mei, C. C.   1997   Effects of weak wind and damping on Wilton's ripples.   J. Fluid Mech. 335, 141-163.

Trulsen, K. & Dysthe, K. B.   1996   A modified nonlinear Schrödinger equation for broader bandwidth gravity waves on deep water.   Wave Motion 24 (3), 281-289.   [Errata]

Trulsen, K. & Mei, C. C.   1995   Modulation of three resonating gravity-capillary waves by a long gravity wave.   J. Fluid Mech. 290, 345-376.

Sammarco, P., Mei, C. C. & Trulsen, K.   1994   Nonlinear resonance of free surface waves in a current over a sinusoidal bottom - a numerical study.   J. Fluid Mech. 279, 377-405.

Trulsen, K. & Mei, C. C.   1993   Double reflection of capillary/gravity waves by a non-uniform current: a boundary-layer theory.   J. Fluid Mech. 251, 239-271.

Trulsen, K.  2021  "Ekstrembølger i havet - hva er det, hvordan oppstår de og hvilken betydning kan de ha for virksomhet til havs." in Årbok / Det norske videnskaps-akademi 2021, pp. 147-156.  Novus forlag.

Trulsen, K.   2018   Rogue Waves in the Ocean, the Role of Modulational Instability, and Abrupt Changes of Environmental Conditions that Can Provoke Non Equilibrium Wave Dynamics.   In The Ocean in Motion: Circulation, Waves, Polar Oceanography (eds. M. G. Velarde, R.Y. Tarakanov, A. V. Marchenko), pp. 239-247. Springer-Verlag, Oceanography Series.

Trulsen, K.   2007   "Weakly Nonlinear Sea Surface Waves -- Freak Waves and Deterministic Forecasting" in Geometric Modelling, Numerical Simulation, and Optimization: Applied Mathematics at SINTEF (eds. Geir Hasle, Knut-Andreas Lie, Ewald Quak), pp. 191-209. Springer

Trulsen, K.   2006   "Weakly nonlinear and stochastic properties of ocean waves fields. Application to an extreme wave event." in Waves in Geophysical Fluids Tsunamis, Rogue Waves, Internal Waves and Internal Tides Series: CISM International Centre for Mechanical Sciences, Number 489 (eds. John Grue, Karsten Trulsen), pp. 49-106. Springer

Magnusson, A. K., Trulsen, K., Bitner-Gregersen, E. M., Aarnes, O. J. & Malila, M.   2019   ``Three sisters'' measured as a triple rogue wave group.   Paper no. OMAE2019-96837.   In Proceedings of OMAE'19 38th International Conference on Offshore Mechanics and Arctic Engineering, June 9-14, 2019, Glasgow, Scotland, UK. 8 pages.

Seemann, J., Carrasco, R., Stresser, M., Horstmann, J., Støle-Hentschel, S., Trulsen, K. & Nieto~Borge, J. C.  2017  An operational wave monitoring system based on a dopplerized marine radar.  In Oceans, 19-22 Jun 2017, Aberdeen, UK.  2 pages.

Trulsen, K.   2005   Spatial evolution of water surface waves.   In Proceedings of WAVES 2005, paper number 127, pp. 1-10.   [postprint]

Trulsen, K., Jensen, A. & Grue, J.   2005   Water wave kinematics of steep irregular waves - systematic perturbation approach, empirical law, PIV measurements and engineering practice.   In Proceedings of 20th International Workshop on Water Waves and Floating Bodies, pp. 253-256.

Dysthe, K., Socquet-Juglard, H., Trulsen, K., Krogstad, H. E. & Liu, J.   2005   "Freak" waves and large-scale simulations of surface gravity waves.   In Rogue Waves, Proceedings of the 14th 'Aha Huliko'a Hawaiian Winter Workshop, 2005, pp. 91-99.

Liu, J., Krogstad, H. E., Trulsen, K., Dysthe, K. & Socquet-Juglard, H.   2005   The statistical distribution of a nonlinear ocean surface.   In Proceedings of The Fifteenth International Offshore and Polar Engineering Conference Vol. III, 422-428.

Krogstad, H. E., Socquet-Juglard, H., Liu, J., Dysthe, K. B. & Trulsen, K.   2004   Spatial extreme value analysis of nonlinear simulations of random surface waves.   In Proceedings of OMAE 2004, paper OMAE2004-51336, pp. 1-11.

Jenkins, A. D., Magnusson, A. K., Niedermeier, A., Monbaliu, J., Toffoli, A. & Trulsen, K.   2004   Rogue waves and extreme events in measured time-series.   In Proceedings of Rogue Waves, Brest, 2004

Socquet-Juglard, H., Dysthe, K. B., Trulsen, K., Fouques, S., Liu, J. & Krogstad, H. E.,   2004   Spatial extremes, shape of large waves, and Lagrangian models.   In Proceedings of Rogue Waves, Brest, 2004

Socquet-Juglard, H., Dysthe, K. B., Trulsen, K. & Krogstad, H. E.   2003   Evolution of a directional spectrum of random surface gravity waves.   In MekIT'03 Second national conference on Computational Mechanics, Trondheim 8-9 May 2003, pp. 339-352. Tapir.

Trulsen, K.   2003   Real time deterministic ocean wave forecasting using weakly nonlinear wave evolution theory.   In MekIT'03 Second national conference on Computational Mechanics, Trondheim 8-9 May 2003, pp. 371-390. Tapir.

Trulsen, K. & Teigen, P.   2002   Wave scattering around a vertical cylinder: Fully nonlinear potential flow calculations compared with low order perturbation results and experiment.   In Proceedings of OMAE 2002, paper OMAE2002-28173, pp. 1-9.

Trulsen, K.   2001   Simulating the spatial evolution of a measured time series of a freak wave.   In Rogue Waves 2000 (eds. Olagnon, M. & Athanassoulis, G.), pp. 265-273. Ifremer.

Teigen, P. & Trulsen, K.   2001   Numerical investigation of nonlinear wave effects around multiple cylinders.   In Proceedings of ISOPE 2001 Vol. 3, pp. 369-378.

Trulsen, K. & Stansberg, C. T.   2001   Spatial evolution of water surface waves: numerical simulation and experiment of bichromatic waves.   In Proceedings of ISOPE 2001 Vol. 3, pp. 71-77.   [postprint]

Dysthe, K. B. & Trulsen, K.   2001   The evolution of an evolution equation.   In PROGRESS IN NONLINEAR SCIENCE, Proceedings of the International Conference dedicated to the 100th Anniversary of A. A. Andronov, Nizhny Novgorod, Russia, July 2-6, 2001, Volume II. Frontiers of Nonlinear Physics, pp. 125-138.

Trulsen, K., Temmos, J.-M., Dysthe, K. B., Gudmestad, O. T. & Velarde, M. G.   1998   The Schrödinger method for water wave kinematics.   In Ocean Wave Kinematics, Dynamics and Loads on Structures (ed. Zhang, J.), pp. 76-83. ASCE.   [postprint]

Trulsen, K. & Dysthe, K. B.   1997   Water wave kinematics computed with nonlinear Schrödinger theory.   In Proceedings of the 16th OMAE Vol. 1B (eds. Chakrabarti, S., Kinoshita, T. & Maeda, M.), pp. 7-18. ASME.

Trulsen, K. & Dysthe, K. B.   1997   Freak waves - A three-dimensional wave simulation.   In Proceedings of the 21st Symposium on Naval Hydrodynamics, pp. 550-560. National Academy Press.

Trulsen, K. & Mei, C. C.   1996   A resonating triad of gravity-capillary waves on a long gravity wave.   In Waves and Nonlinear Processes in Hydrodynamics (eds. Gjevik, B., Grue, J. & Weber, J. E.), pp. 165-176. Kluwer Academic Publishers (Springer)

Trulsen, K. & Dysthe, K. B.   1992   Action of windstress and breaking on the evolution of a wavetrain.   In Breaking Waves (eds. Banner, M. L. & Grimshaw, R. H. J.), pp. 243-249. Springer-Verlag.

Trulsen, K. & Dysthe, K. B.   1990   Frequency down-shift through self modulation and breaking.   In Water Wave Kinematics (eds. Tørum, A. & Gudmestad, O. T.), pp. 561-572. Kluwer Academic Publishers.

Trulsen, K., Naciri, M. & Mei, C. C.   1996   Comment on `A perturbation analysis of an interaction between long and short surface waves' by Woodruff and Messiter.   Stud. Appl. Math. 96, 141-142.

Hjelmervik, K. B. & Trulsen, K.   2009   New current modified Schrödinger equations.   Preprint series. Mechanics and Applied Mathematics, No. 1, ISSN 0809-4403, University of Oslo.

Apollon 2016-10-26 : Norsk matematiker løste gåten bak oljekatastrofe by Yngve Vogt.

Titan.uio.no 2016-01-04 : Kan en monsterbølge ha forårsaket dette? and Did a giant wave provoke an environmental disaster? by Espen Haakstad.

Aftenposten Junior 2013-02-26 - 2013-03-04 (p. 18) : Bølgebeistene by Kjetil Johansen & Åshild Skadberg.

Dagsavisen 2012-11-28 : Når bølgebeistene skyller inn by Kjetil Johansen.

ABC Nyheter 2012-11-25 : Bølgebeistene by Kjetil Johansen.

Verdens Gang 2005-04-18 (p. 19) : Slik oppstår ekstrembølger, comment to Gigantbølge rammet cruiseskip by Karin Muri.

NRK Abels tårn 2023-05-26 : Abels bakgård 2023-05-26

NRK Ekko 2016-11-03 : "Bølgeforsker kaster nytt lys over oljekatastrofe" by Christian Marstrander.

DNVA 2021-02-11 : Ekstrembølger i havet – hva er det, hvordan oppstår de og hvilken betydning kan de ha for virksomhet til havs

Realistforeningen : Pub med professor 2020-09-30 : Ekstreme bølger.

Ph.D. thesis   1995   The influence of currents, long waves and wind on gravity-capillary waves. Massachusetts Institute of Technology, Department of Civil and Environmental Engineering.
[Errata for part 3.]

Master thesis   1989   Frequency down-shift through self modulation and breaking, a numerical study. University of Tromsø, Institute of Mathematical and Physical Sciences.
[Errata.]

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