Publications


Nose, T, Babanin, A., and K. Ewans, 2016: Directional analysis and potential for spectral modelling of infragravity waves. 35th International Conference on Offshore Mechanics and Arctic Engineering, OMAE2016-54282, Busan, South Korea, Jun. 9-24.

Raghupathi, L., Randell, D., Ewans, K., and P. Jonathan, 2016: Non-stationary estimation of joint design criteria with a multivariate conditional extremes approach. 35th International Conference on Offshore Mechanics and Arctic Engineering, OMAE2016-54355, Busan, South Korea, Jun. 9-24.

Raghupathi, L., Randell, D., Ross, E., Ewans, K., and P. Jonathan, 2016: Multi-dimensional predictive analytics for risk estimation of extreme events. 23rd IEEE International Conference on High Performance Computing, Data, and Analytics. Dec. 19-22, 2016. Hyderabad, India.

Jones, M., Randell, D., Ewans, K., and P. Jonathan, 2016: Statistics of extreme ocean environments: Non-stationary inference for directionality and other covariate effects. Ocean Engineering, 119, 30-46.

Wu, Y., Randell, D., Christou, M., Ewans, K., and P. Jonathan, 2016: On the distribution of wave height in shallow water. Coastal Engineering, 111, 39-49.

Raghupathi, L., Randell, D., Ewans, K., and P. Jonathan, 2016: Fast computation of large scale marginal extremes with multi-dimensional covariates. Computational Statistics and Data Analysis, 95, 243–258.

Guedes Soares, C., Eatock Taylor, R., and K. Ewans, 2015: Safe offloading from floating LNG platforms. Applied Ocean Research, 51, 252–254.

Randell, D., Feld, G., Ewans, K., and P. Jonathan, 2015: Distributions of return values for ocean wave characteristics in the South China Sea using directional–seasonal extreme value analysis. Environmetrics, DOI: 10.1002/env.2350.

Feld, G., Randell, D., Wu, Y., Ewans, K., and P. Jonathan, 2015: Estimation of storm peak and intra-storm directional-seasonal design conditions in the North Sea. J. Offshore Mechanics Arctic Engineering, January.

Jonathan, P., Ewans, K.C., and J Flynn, 2014: On the estimation of ocean engineering design contours. J. Offshore Mechanics Arctic Engineering, 136, 041101-1 - 041101-8, November.

Christou, M., and K. Ewans, 2014: Field Measurements of Rogue Water Waves. J. Physical Oceanography, September, 2317-2335.

Ewans, K.C., Feld, G., and P. Jonathan, 2014: On wave radar measurement. Ocean Dynamics, DOI:10.1007/s10236-014-0742-5.

Ewans, K.C., and P. Jameson, 2015: Availability of offloading from an LNG barge. Applied Ocean Research, 51, 268-278.

Ewans, K.C., 2015: A wavelet-based test for swell stationarity. Applied Ocean Research, 51, 255-267.

Bitner-Gregersen, E.M., Ewans, K.C., and M.C. Johnson, 2014: Some uncertainties associated with wind and wave description and their importance for engineering applications. Ocean Engineering, 86, 11–25.

Muyau, J., Ewans, K.C., and P. Jonathan, 2014: Short-term variability of wind measurements in South China Sea. OTC-24904. Proc. OTC-Asia, Kuala Lumpur, Malaysia, Mar. 26-28.

Amurol, S., Ewans, K.C., and R. Sheikh, 2014: Measured wave spectra offshore Sabah & Sarawak, Malaysia. OTC-224925. Proc. OTC-Asia, Kuala Lumpur, Malaysia, Mar. 26-28.

Ewans, K.C., and P. Jonathan, 2014: Recent advances in the analysis of extreme metocean events. OTC-25026. Proc. OTC-Asia, Kuala Lumpur, Malaysia, Mar. 26-28.

Babanin, A.V., and K. Ewans, 2014: Wave instability in finite depths. 33rd International Conference on Offshore Mechanics and Arctic Engineering, San Francisco, USA, Jun. 8-13.

Bitner-Gregersen, E.M., Bhattacharya, S.K., Chatjigeorgiou, I.K., Eames, I., Ellermann, K., Ewans, K., Hermanski, G., Johnson, M.C., Ma, N., Maisondieu, C., Nilva, A., Rychlik, I., and T. Waseda, 2014. Recent developments of ocean environmental description with focus on uncertainties. Ocean Engineering, 86, 26–46.

Randell, D., Zanini, E., Vogel, M., Ewans, K., and P. Jonathan, 2014: Omnidirectional return values for storm severity from directional extreme value models: the effect of environment and sample size. 33rd International Conference on Offshore Mechanics and Arctic Engineering, San Francisco, USA, Jun. 8-13.

Feld, G., Randell, D., Wu, Y., Ewans, K., and P. Jonathan, 2014: Estimation of storm peak and intra-storm directional-seasonal design conditions in the North Sea. 33rd International Conference on Offshore Mechanics and Arctic Engineering, San Francisco, USA, Jun. 8-13.

Jonathan, P., Randell, D., Wu, Y., and K. Ewans, 2014: Return level estimation from non-stationary spatial data exhibiting multidimensional covariate effects. Ocean Engineering, 88, 520–532.

Jonathan, P., Ewans, K., and D. Randell, 2014: Non-stationary conditional extremes of northern North Sea storm characteristics. Environmetrics, DOI: 10.1002/env.2262.

Ewans, K., Jonathan, P., and G. Feld, 2013: What Does a Wave Radar Actually Measure? 13th International Workshop on Wave Hindcasting & Forecasting and 4th Coastal Hazards Symposium, Banff, Alberta, Canada, October 27 - November 1, 2013

Jonathan, P., Ewans, K., and D. Randell, 2013: Multidimensional covariate effects in spatial and joint extremes. 13th International Workshop on Wave Hindcasting & Forecasting and 4th Coastal Hazards Symposium, Banff, Alberta, Canada, October 27 - November 1, 2013

Jonathan, P., and K. C. Ewans, 2013. Statistical modelling of extreme ocean environments with implications for marine design : a review. Ocean Engineering, 62, 91-109.

Ewans, K., Forristall, G.Z., Prevosto, M., and M. Olagnon, 2013: Response sensitivity to swell spectra off West Africa, Proc. 32nd International Conference on Offshore Mechanics and Arctic Engineering, Nantes, France, Jun. 9-14.

Forristall, G.Z., Ewans, K., Olagnon, M., and M. Prevosto, 2013: The West Africa Swell Project, Proc. 32nd International Conference on Offshore Mechanics and Arctic Engineering, Nantes, France, Jun. 9-14.

Jones, O., Ewans, K., and S. Chuah, 2013: A Monte Carlo approach for estimating extreme currents in the Singapore Straits. 32nd International Conference on Offshore Mechanics and Arctic Engineering, Nantes, France, Jun. 9-14.

Olagnon, M., Ewans, K., Forristall, G.Z., and M. Prevosto, 2013: West Africa swell spectral shapes. 32nd International Conference on Offshore Mechanics and Arctic Engineering, Nantes, France, Jun. 9-14.

Prevosto, M., Ewans, K., Forristall, G.Z., and M. Olagnon, 2013: Swell genesis, modelling and measurements in West Africa, 32nd International Conference on Offshore Mechanics and Arctic Engineering, Nantes, Jun. 9-14.

Randell, D., Wu, Y., Jonathan, P., and K. Ewans, 2013: Modelling covariate effects in extremes of storm severity on the Australian north west shelf. 32nd International Conference on Offshore Mechanics and Arctic Engineering, Nantes, Nantes, France, Jun. 9-14.

Jonathan, P., Ewans, K., and D. Randell, 2013: Joint modelling of extreme ocean environments incorporating covariate effects, Coastal Engineering, 79, 22–31.

Ewans, K., and P. Jonathan, 2013: Evaluating environmental joint extremes for the offshore industry using the conditional extremes model, Journal of Marine Systems, 2013.

Reeve, D.T., Randell, D., Ewans, K.C., and P. Jonathan, 2012: Uncertainty due to choice of measurement scale in extreme value modeling of North Sea storm severity. Ocean Engineering, 53, 164–176.

Ewans, K.C, 2012: Metocean Data and Models for Application in the Offshore Industry. In: Guedes Soares C, editor. Marine technology and engineering: CENTEC anniversary book, vol. 1. CRC Press; 2012.

Jonathan, P., Ewans, K., and J. Flynn, 2012: Joint modelling of vertical profiles of large ocean currents, Ocean Engineering, 42.

Buchner, B., Forristall, G., Ewans, K., Christou, M., and J. Hennig, 2011: New insights in extreme crest height distributions (a summary of the ‘CREST’ JIP). OOAE2011 30th International Conference on Ocean, Offshore and Arctic Engineering. 19 – 24 June, 2011, Rotterdam, The Netherlands.

Christou, M., and K. C. Ewans, 2011: Examining a comprehensive data set containing thousands of freak wave events. Part 1 – description of the data and quality control procedure. OOAE2011 30th International Conference on Ocean, Offshore and Arctic Engineering. 19 – 24 June, 2011, Rotterdam, The Netherlands.

Christou, M., and K. C. Ewans, 2011: Examining a comprehensive data set containing thousands of freak wave events. Part 2 – analysis and findings. OOAE2011 30th International Conference on Ocean, Offshore and Arctic Engineering. 19 – 24 June, 2011, Rotterdam, The Netherlands.

Christou, M., Rijnsdorp, D., and K. Ewans, 2011: Analysis of shallow water wave measurements recorded at the field research facility. 12th International Workshop on Wave Hindcasting & Forecasting. Waikoloa, Hawaii, November, 2011.

Wu, Y., Randell, D., Reeve, D., Jonathan, P., and K. Ewans, 2011: Accommodating measurement scale uncertainty in extreme value analysis of northern North Sea storm severity. Environmental Risk and Extreme Events, Ascona, Switzerland, Jul. 10-15, 2011.

Jonathan, P., Ewans, K., and D. Randell, 2011: Conditional extremes with covariates. The 7th Conference on Extreme Value Analysis, Probabilistic and Statistical Models and their Applications, Lyon, Jun. 27- Jul. 1, 2011.

Jonathan, P., Ewans, K., and J. Flynn, 2011: On the estimation of ocean engineering design contours, 30th International Conference on Offshore Mechanics and Arctic Engineering, Rotterdam, The Netherlands, Jun. 19-23.

Jonathan, P., and K. Ewans, 2011: Modelling the seasonality of extreme waves in the Gulf of Mexico. J. Offshore Mechanics and Arctic Engineering, 133, Article 021104.

Jonathan, P., and K. Ewans, 2011: A spatio-directional model for extreme waves in the Gulf of Mexico. J. Offshore Mechanics and Arctic Engineering, 133, Article 011601.

Jonathan, P., and K. Ewans, 2011: Discussion of `On the use of discrete seasonal and directional models for the estimation of extreme wave conditions' by Edward B.L. Mackay, Peter G. Challenor, AbuBakr S. Bahaj [Ocean Engineering 37(5-6), April 2010, pp. 425-442], Ocean Engineering, 38, 205.

Christou, M., Ewans, K., Clauss, G., and M. Klein, 2010: The spatial evolution of the spectral characteristics of the Draupner New Year Wave. OMAE2010. 29th International Conference on Offshore Mechanics and Arctic Engineering, 7 –11 June, 2010, Shanghai, China.

Killick, R., Eckley, I., Ewans, K., and P. Jonathan, 2010: Detection of changes in the characteristics of oceanographic time-series using changepoint analysis, Ocean Engineering, 37 (13), 1120-1126.

Jonathan, P., Flynn, J., and K. Ewans, 2010: Joint modelling of wave spectral parameters for extreme sea states, Ocean Engineering, 37 (1070), 1080.

Reniers, A.J.H.M., Groenewegen, M.J., Ewans, K.C., Masterton, S., Stelling, G.S., and J. Meek, 2010: Estimation of infragravity waves at intermediate water depth, Coastal Engineering, 57, 52-61.

Christou, M., Tromans, P., Vanderschuren, L. & Ewans, K. 2009: Second-order crest statistics of realistic sea states. 11th International Workshop on Wave Hindcasting and Forecasting, Halifax, Canada.

Jonathan, P., Flynn, J., and K. C. Ewans, 2009: Joint modelling of wave spectral parameters for extreme sea states, 11th International Workshop on Wave Hindcasting & Forecasting. Halifax, Nova Scotia, Canada, October, 2009

Bitner-Gregersen, E.M., Ellermann, K, Ewans, K.C., Falzarano, J.M., Johnson, M.C., Nielsen, U.D, Nilva, A., Queffeulou, P., Smith, T.W.P., Waseda, T. 2009. Environment. 17th International Ship and Offshore Structures Congress, 16-21 August, Seoul, Korea.

Christou, M., Ewans, K., Buchner, B., and Swan, C., 2008: Spectral characteristics of an extreme crest measured in a laboratory basin. In Rogue Waves Workshop. Brest, France.

Jonathan, P., Ewans, K.C., and G. Z. Forristall, 2008: Statistical estimation of extreme ocean environments: The requirement for modelling directionality and other covariate effects, Ocean Engineering, 35, 1211-1225.

Ewans, K.C., and P. Jonathan, 2008: The effect of directionality on Northern North Sea extreme wave design criteria, J. Offshore Mechanics and Arctic Engineering, 130 (4), 10

Masterton, S., and K. C. Ewans, 2008: Characteristics of the infragravity wave climate, OMAE2008-57648, 27th International Conference on Offshore Mechanics and Arctic Engineering, 15-20 June 2008, Estoril, Portugal.

Jonathan, P., and K. C. Ewans, 2008: Modelling the seasonality of extreme waves in the Gulf of Mexico, OMAE2008-57131, 27th International Conference on Offshore Mechanics and Arctic Engineering, 15-20 June 2008, Estoril, Portugal.

Tromans, P., Vanderschuren, L., and K.C. Ewans, 2008: The second order statistics of high waves in sea and swell, J. Off. Mech. Arc. Eng., 130, Nov. 2008.

Van Zutphen, H., Jonathan, P., and K.C. Ewans, 2008: A generic method to model frequency-direction waves spectra for FPSO motions. OMAE2008-57131, 27th International Conference on Offshore Mechanics and Arctic Engineering, 15-20 June 2008, Estoril, Portugal.

Jonathan, P., and K.C. Ewans, 2007: The effect of directionality on extreme wave design, Ocean Engineering, 34, 1977-1994.

Jonathan, P., and K.C. Ewans, 2007: Uncertainties in extreme wave height estimates for hurricane-dominated regions, J. Offshore Mechanics and Arctic Engineering, 129, 300-305

Ewans, K.C, and P. Jonathan, 2006: Estimating extreme wave design criteria incorporating directionality, 9th International Workshop on Wave Hindcasting & Forecasting. Victoria, B.C. Canada, September 24-29.

Ewans, K. C., 2003: A response-based method for developing joint metocean criteria for on-bottom pipeline stability, J. Offshore Mech. and Arctic Eng., May 2003, 119-125.

Ewans K.C., 2001, Directional Spreading in Ocean Swell, Proceedings of Ocean Wave Measurement and Analysis, San Francisco, 2001.

Ewans, K. C., 2001. Reliability based analysis of on-bottom stability of submarine pipelines. First International IMP-PEMEX symposium on reliability assessment for offshore structures, Mexico City, Dec. 3-4.

Ewans, K. C., 2001: A response-based method for developing joint metocean criteria for on-bottom pipeline stability. OMAE01/S&R-2123, 20th International Conference on Offshore Mechanics and Arctic Engineering, 15-20 June 2008, Rio de Janeiro, Brazil ().

Ewans, K. C., 2001. Directional spreading in ocean swell. Proceedings of the 4thInternational Symposium Waves, San Francisco, Sept. 2-6.

Ewans, K. C., and T. van der Vlugt, 1999: Estimating bimodal frequency-direction spectra from surface buoy data recorded during tropical cyclones. Journal of Offshore Mechanics and Arctic Engineering, 121, August 1999, 172-180.

Ewans, K. C., and T. van der Vlugt, 1998: Estimating bimodal frequency-direction spectra from surface buoy data recorded during tropical cyclones. 17th International Conference on Offshore Mechanics and Arctic Engineering, 5-9 July 1998, Lisbon, Portugal.

Ewans, K. C., 1998. Observations of the directional spectrum of fetch-limited waves. J. Phys. Oceanogr, 28, pp. 495–512.

Forristall, G.Z., and Ewans K.C., 1998, Worldwide Measurements of Directional Wave Spreading, J. of Atmospheric and Oceanic Technology, 15, April.

Cardone, V. J. and K. C. Ewans, 1992: Validation of the hindcast approach to the specification of wave conditions at the Maui location off the west coast of New Zealand. 3rd International Workshop on Wave Hindcasting and Forecasting. Montreal, Quebec. May 9-22, 1992; p. 232-247.

Ewans, K.C. and A.C. Kibblewhite, 1992: Spectral features of the New Zealand deep-water ocean wave climate. N.Z. J. Mar. and Fresh. Res., 26, 323-338.

Ewans, K.C. and A.C. Kibblewhite, 1990: An examination of fetch-limited wave growth off the west coast of New Zealand by a comparison with the JONSWAP results. J. Phys. Oceanogr., 20, 1278-1296.

Ewans, K.C. and A.C. Kibblewhite, 1988: Some aspects of the ocean wave-field in New Zealand waters. Proc. 1st Symp. N.Z. Ocean Wave Soc., Auckland, 25 August.

Ewans, K.C., Abel, R., and Smith, D., 1988: Climatological statistics for wave directional data derived from pitch-roll buoys. Proc. 1st Symp. N.Z. Ocean Wave Soc., Auckland, 25 August.

Ewans, K.C. and A.C. Kibblewhite, 1986: A study of ocean and seismic noise at infrasonic frequencies. Ocean-Seismo Acoustics, Series IV Vol 16, pp 731-741, Eds. T. Akal and J.M. Berkson, Plenum Press..

Ewans, K.C. and A.C. Kibblewhite, 1986: Spectral characteristics of ocean waves undergoing generation in New Zealand waters. 9th Australasian Fluid Mechanics Conference, Auckland, 8-12 December.

Kibblewhite, A.C. and K.C. Ewans, 1985: Wave-wave interactions, microseisms, and infrasonic ambient noise in the ocean. J. Acoustical Soc. Am., 78(3), September.