All Stories

  1. Anomalous Sea Ice Retreat in the Refreezing Western Arctic by a 30‐Year Record Cyclone in October: Oceanic, Atmospheric, and Wave Influences

    Article • Geophysical Research Letters, August 2026, American Geophysical Union (AGU)

    Takuji Waseda

  2. Melting processes of the marginal ice zone inferred from floe size distributions measured with a drone in the southern Sea of Okhotsk

    Article • Polar Science, May 2025, Elsevier

    Takuji Waseda

  3. Spatial and Temporal Variability of Ocean Thermal Energy Resource of the Pacific Islands

    Article • Energies, June 2024, MDPI AG

    Takuji Waseda

  4. Tropical Cyclone Modeling With the Inclusion of Wave‐Coupled Processes: Sea Spray and Wave Turbulence

    Article • Geophysical Research Letters, December 2023, American Geophysical Union (AGU)

    Takuji Waseda

  5. An affordable and customizable wave buoy for the study of wave-ice interactions: design concept and results from field deployments

    Article • Coastal Engineering Journal, October 2023, Taylor & Francis

    Takuji Waseda

  6. Observation of anomalous spectral downshifting of waves in the Okhotsk Sea Marginal Ice Zone

    Article • Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences, September 2022, Royal Society Publishing

    Takuji Waseda

  7. Phase Convergence and Crest Enhancement of Modulated Wave Trains

    Article • Fluids, August 2022, MDPI AG

    Takuji Waseda

  8. Extreme Waves

    Article • Journal of Marine Science and Engineering, May 2022, MDPI AG

    Takuji Waseda

  9. Wave Energy in the Pacific Island Countries: A New Integrative Conceptual Framework for Potential Challenges in Harnessing Wave Energy

    Article • Energies, April 2022, MDPI AG

    Takuji Waseda

  10. OpenMetBuoy-v2021: An Easy-to-Build, Affordable, Customizable, Open-Source Instrument for Oceanographic Measurements of Drift and Waves in Sea Ice and the Open Ocean

    Article • Geosciences, February 2022, MDPI AG

    Takuji Waseda

  11. Ocean Surface Wave Effects on Development of Explosive Cyclone

    Article • February 2022, Wiley

    Takuji Waseda

  12. Statistical model representing storm avoidance by merchant ships in the North Atlantic Ocean

    Article • Ocean Engineering, September 2021, Elsevier

    Takuji Waseda

  13. Modeled and satellite-derived extreme wave height statistics in the North Atlantic Ocean reaching 20 m

    Article • February 2021, Wiley

    Takuji Waseda

  14. Climatic trends of extreme wave events caused by Arctic Cyclones in the western Arctic Ocean

    Article • Polar Science, December 2020, Elsevier

    Takuji Waseda

  15. Assessment of wave energy resources and their associated uncertainties for two coastal areas in Japan

    Article • Journal of Marine Science and Technology, November 2020, Springer Science + Business Media

    Takuji Waseda

  16. Phase-suppressed hydrodynamics of solitons on constant-background plane wave

    Article • Physical Review Fluids, November 2020, American Physical Society (APS)

    Takuji Waseda

  17. On the coagulated pancake ice formation: Observation in the refreezing Chukchi Sea and comparison to the Antarctic consolidated pancake ice

    Article • Polar Science, November 2020, Elsevier

    Takuji Waseda

  18. Observation of on-ice wind waves under grease ice in the western Arctic Ocean

    Article • Polar Science, September 2020, Elsevier

    Takuji Waseda

  19. Fourier amplitude distribution and intermittency in mechanically generated surface gravity waves

    Article • July 2020, American Physical Society (APS)

    Takuji Waseda, Dr Justin S Leontini

  20. Observation of sea surface height using airborne radar altimetry: a new approach for large offshore tsunami detection

    Article • Journal of Engineering Physics and Thermophysics, August 2019, Springer Science + Business Media

    Takuji Waseda

  21. Drifting breathers and Fermi–Pasta–Ulam paradox for water waves

    Article • Wave Motion, August 2019, Elsevier

    Takuji Waseda

  22. Waves and Swells in High Wind and Extreme Fetches, Measurements in the Southern Ocean

    Article • Frontiers in Marine Science, July 2019, Frontiers

    Takuji Waseda

  23. On the Asymmetric Spectral Broadening of a Hydrodynamic Modulated Wave Train in the Optical Regime

    Article • Fluids, May 2019, MDPI AG

    Takuji Waseda

  24. Temporal variation of modulated-wave-train geometries and their influence on vertical bending moments of a container ship

    Article • Applied Ocean Research, May 2019, Elsevier

    Takuji Waseda

  25. Directional soliton and breather beams

    Article • Proceedings of the National Academy of Sciences, April 2019, Proceedings of the National Academy of Sciences

    Takuji Waseda

  26. A simple spatial model for extreme tropical cyclone seas

    Article • Ocean Engineering, December 2018, Elsevier

    Takuji Waseda

  27. Generation of a spatially periodic directional wave field in a rectangular wave basin based on higher-order spectral simulation

    Article • Ocean Engineering, December 2018, Elsevier

    Takuji Waseda

  28. Wave turbulence and intermittency in directional wave fields

    Article • Wave Motion, December 2018, Elsevier

    Takuji Waseda, Dr Justin S Leontini

  29. Impact of the four-wave quasi-resonance on freak wave shapes in the ocean

    Article • Ocean Dynamics, November 2018, Springer Science + Business Media

    Takuji Waseda

  30. Measuring offshore tsunami currents using ship navigation records

    Article • Progress in Earth and Planetary Science, August 2018, Springer Science + Business Media

    Takuji Waseda

  31. Development of waves under explosive cyclones in the Northwestern Pacific

    Article • Ocean Dynamics, July 2018, Springer Science + Business Media

    Takuji Waseda

  32. Predictability of storm wave heights in the ice-free Beaufort Sea

    Article • Ocean Dynamics, July 2018, Springer Science + Business Media

    Takuji Waseda

  33. A parameter quantifying radiation damping of bay oscillations excited by incident tsunamis

    Article • Continental Shelf Research, April 2018, Elsevier

    Takuji Waseda

  34. Correlated Increase of High Ocean Waves and Winds in the Ice-Free Waters of the Arctic Ocean

    Article • Scientific Reports, March 2018, Springer Science + Business Media

    Takuji Waseda

  35. Experimental and numerical investigations of temporally and spatially periodic modulated wave trains

    Article • Physics of Fluids, March 2018, American Institute of Physics

    Takuji Waseda

  36. Preparing for the Future Nankai Trough Tsunami: A Data Assimilation and Inversion Analysis From Various Observational Systems

    Article • Journal of Geophysical Research Oceans, October 2017, Wiley

    Aditya Gusman, Iyan Mulia, Takuji Waseda

  37. Experiments on higher-order and degenerate Akhmediev breather-type rogue water waves

    Article • Journal of Ocean Engineering and Marine Energy, August 2017, Springer Science + Business Media

    Takuji Waseda

  38. Large Tank Evaluation of a GPS Wave Buoy for Wind Stress Measurements

    Article • Journal of Atmospheric and Oceanic Technology, June 2017, American Meteorological Society

    Takuji Waseda

  39. Measurement of spatial wave profiles and particle velocities on a wave surface by stereo imaging –validation with unidirectional regular waves–

    Article • Journal of the Japan Society of Naval Architects and Ocean Engineers, January 2017, Japan Society of Naval Architects and Ocean Engineers

    Takuji Waseda

  40. The long-term fluctuation of tides and the effect on resource assessment of tidal current energy around Japan

    Article • Journal of the Japan Society of Naval Architects and Ocean Engineers, January 2017, Japan Society of Naval Architects and Ocean Engineers

    Takuji Waseda

  41. Internal solitary waves in a two-fluid system with a free surface

    Article • Journal of Fluid Mechanics, September 2016, Cambridge University Press

    Takuji Waseda

  42. Laboratory Experiments on the Effects of a Variable Current Field on the Spectral Geometry of Water Waves

    Article • Journal of Physical Oceanography, September 2016, American Meteorological Society

    Dr Alessandro Toffoli, Takuji Waseda

  43. Extreme value estimation using the likelihood-weighted method

    Article • Ocean Engineering, September 2016, Elsevier

    Takuji Waseda

  44. Assessment of GNSS-based height data of multiple ships for measuring and forecasting great tsunamis

    Article • Geoscience Letters, August 2016, Springer Science + Business Media

    Takuji Waseda

  45. Marine Energy Resource Assessment at Reconnaissance to Feasibility Study Stages

    Article • Journal of the Japan Society of Naval Architects and Ocean Engineers, January 2016, Japan Society of Naval Architects and Ocean Engineers

    Takuji Waseda

  46. wave interactions under the influence of background current fields

    Article • Journal of Fluid Mechanics, October 2015, Cambridge University Press

    Dr Alessandro Toffoli, Takuji Waseda

  47. The Impact of the Winter Monsoon on Marine Surface-Layer Turbulence

    Article • Boundary-Layer Meteorology, June 2015, Springer Science + Business Media

    Takuji Waseda

  48. M2baroclinic tide variability modulated by the ocean circulation south of Japan

    Article • Journal of Geophysical Research Oceans, May 2015, American Geophysical Union (AGU)

    Dr TORU MIYAMA, Takuji Waseda

  49. Rogue waves in opposing currents: an experimental study on deterministic and stochastic wave trains

    Article • Journal of Fluid Mechanics, March 2015, Cambridge University Press

    Dr Alessandro Toffoli, Takuji Waseda

  50. Indo-China Monsoon Indices

    Article • Scientific Reports, January 2015, Springer Science + Business Media

    Takuji Waseda

  51. Utilization of current information for Ocean Current Turbine design

    Article • Journal of the Japan Society of Naval Architects and Ocean Engineers, January 2015, Japan Society of Naval Architects and Ocean Engineers

    Takuji Waseda

  52. Recent developments of ocean environmental description with focus on uncertainties

    Article • Ocean Engineering, August 2014, Elsevier

    Takuji Waseda

  53. Deep water observations of extreme waves with moored and free GPS buoys

    Article • Ocean Dynamics, July 2014, Springer Science + Business Media

    Takuji Waseda

  54. Nonlinear internal waves generated and trapped upstream of islands in the Kuroshio

    Article • Geophysical Research Letters, July 2014, American Geophysical Union (AGU)

    Takuji Waseda

  55. On recording sea surface elevation with accelerometer buoys: lessons from ITOP (2010)

    Article • Ocean Dynamics, May 2014, Springer Science + Business Media

    Takuji Waseda

  56. Predicting freakish sea state with an operational third-generation wave model

    Article • Natural Hazards and Earth System Science, April 2014, Copernicus GmbH

    Takuji Waseda

  57. ADCP measurements of ocean currents near Miyake Island

    Article • Journal of the Japan Society of Naval Architects and Ocean Engineers, January 2014, Japan Society of Naval Architects and Ocean Engineers

    Takuji Waseda

  58. Experimental evidence of the modulation of a plane wave to oblique perturbations and generation of rogue waves in finite water depth

    Article • Physics of Fluids, September 2013, American Institute of Physics

    Dr Alessandro Toffoli, Takuji Waseda

  59. Data Assimilation of the High-Resolution Sea Surface Temperature Obtained from the Aqua-Terra Satellites (MODIS-SST) Using an Ensemble Kalman Filter

    Article • Remote Sensing, June 2013, MDPI AG

    Dr TORU MIYAMA, Takuji Waseda

  60. Excitation of rogue waves in a variable medium: An experimental study on the interaction of water waves and currents

    Article • Physical Review E, May 2013, American Physical Society (APS)

    Dr Alessandro Toffoli, Takuji Waseda

  61. Confidence Interval of 3 Parameter Weibull Distribution in Extreme Value Estimation

    Article • Journal of the Japan Society of Naval Architects and Ocean Engineers, January 2013, Japan Society of Naval Architects and Ocean Engineers

    Takuji Waseda

  62. Validation of the downscaling method for the high-accuracy wind map

    Article • Journal of the Japan Society of Naval Architects and Ocean Engineers, January 2013, Japan Society of Naval Architects and Ocean Engineers

    Takuji Waseda

  63. Freakish sea index and sea states during ship accidents

    Article • Journal of Marine Science and Technology, April 2012, Springer Science + Business Media

    Takuji Waseda

  64. Nonlinear interaction of the Tsugaru Warm Current and tide in the Tsugaru Strait

    Article • Ocean Dynamics, April 2012, Springer Science + Business Media

    Takuji Waseda

  65. Open and coastal seas interactions south of Japan represented by an ensemble Kalman filter

    Article • Ocean Dynamics, February 2012, Springer Science + Business Media

    Dr TORU MIYAMA, Takuji Waseda

  66. Enhanced freak wave occurrence with narrow directional spectrum in the North Sea

    Article • Geophysical Research Letters, July 2011, American Geophysical Union (AGU)

    Takuji Waseda

  67. Wave Breaking in Directional Fields

    Article • Journal of Physical Oceanography, January 2011, American Meteorological Society

    Dr Alessandro Toffoli, Takuji Waseda

  68. Impact of nonlinear energy transfer on the wave field in Pacific hindcast experiments

    Article • Journal of Geophysical Research Atmospheres, December 2010, American Geophysical Union (AGU)

    Takuji Waseda

  69. Maximum steepness of oceanic waves: Field and laboratory experiments

    Article • Geophysical Research Letters, March 2010, American Geophysical Union (AGU)

    Dr Alessandro Toffoli, Takuji Waseda

  70. Electromagnetic scattering from wind blown waves and ripples modulated by longer waves under laboratory conditions

    Article • IET Radar Sonar & Navigation, January 2010, the Institution of Engineering and Technology (the IET)

    Takuji Waseda

  71. Interplay of Resonant and Quasi-Resonant Interaction of the Directional Ocean Waves

    Article • Journal of Physical Oceanography, September 2009, American Meteorological Society

    Takuji Waseda

  72. Statistical Properties of Directional Ocean Waves: The Role of the Modulational Instability in the Formation of Extreme Events

    Article • Physical Review Letters, March 2009, American Physical Society (APS)

    Dr Alessandro Toffoli, Professor Nobuhito Mori, Takuji Waseda

  73. Evolution of a Random Directional Wave and Freak Wave Occurrence

    Article • Journal of Physical Oceanography, March 2009, American Meteorological Society

    Takuji Waseda

  74. Freakish sea state and swell-windsea coupling: Numerical study of theSuwa-Maruincident

    Article • Geophysical Research Letters, January 2009, American Geophysical Union (AGU)

    Takuji Waseda

  75. Current-Induced Modulation of the Ocean Wave Spectrum and the Role of Nonlinear Energy Transfer

    Article • Journal of Physical Oceanography, December 2008, American Meteorological Society

    Takuji Waseda

  76. Wind Wave Growth at Short Fetch

    Article • Journal of Physical Oceanography, July 2008, American Meteorological Society

    Takuji Waseda

  77. Measurements of the Doppler spectra of breaking waves

    Article • IET Radar Sonar & Navigation, January 2007, the Institution of Engineering and Technology (the IET)

    Takuji Waseda

  78. Blocking of the Kuroshio Large Meander by Baroclinic Interaction with the Izu Ridge

    Article • Journal of Physical Oceanography, November 2006, American Meteorological Society

    Takuji Waseda

  79. Significance of High-Frequency Wind Forcing in Modelling the Kuroshio

    Article • Journal of Engineering Physics and Thermophysics, June 2005, Springer Science + Business Media

    Takuji Waseda

  80. Numerical Study on the Oyashio Water Pathways in the Kuroshio–Oyashio Confluence*

    Article • Journal of Physical Oceanography, May 2004, American Meteorological Society

    Takuji Waseda

  81. On the eddy-Kuroshio interaction: Meander formation process

    Article • Journal of Geophysical Research Atmospheres, January 2003, American Geophysical Union (AGU)

    Takuji Waseda

  82. Article • Journal of Engineering Physics and Thermophysics, January 2003, Springer Science + Business Media

    Takuji Waseda

  83. Scale Utilization and Optimization from Wavelet Analysis for Data Assimilation: SUgOiWADAi

    Article • Journal of Atmospheric and Oceanic Technology, May 2002, American Meteorological Society

    Takuji Waseda

  84. Article • Journal of Engineering Physics and Thermophysics, January 2002, Springer Science + Business Media

    Takuji Waseda

  85. Anticyclonic eddies and Kuroshio Meander Formation

    Article • Geophysical Research Letters, May 2001, American Geophysical Union (AGU)

    Takuji Waseda

  86. Article • Journal of Engineering Physics and Thermophysics, January 2001, Springer Science + Business Media

    Takuji Waseda

  87. Error Estimation Using Wavelet Analysis for Data Assimilation: EEWADAi*

    Article • Journal of Atmospheric and Oceanic Technology, September 2000, American Meteorological Society

    Takuji Waseda

  88. Experimental study of the stability of deep-water wave trains including wind effects

    Article • Journal of Fluid Mechanics, December 1999, Cambridge University Press

    Takuji Waseda

  89. Laboratory observations of wave group evolution, including breaking effects

    Article • Journal of Fluid Mechanics, January 1999, Cambridge University Press

    Takuji Waseda

  90. Correlation of hydrodynamic features with LGA radar backscatter from breaking waves

    Article • IEEE Transactions on Geoscience and Remote Sensing, January 1999, Institute of Electrical & Electronics Engineers (IEEE)

    Takuji Waseda