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SPECIAL ISSUE TECHNICAL PAPERS

Wave Crest Sensor Intercomparison Study: An Overview of WACSIS

[+] Author and Article Information
George Z. Forristall

Shell Global Solutions International, B.V., Volmerlaan 8, 2280AB Rijswijk, The Netherlandse-mail: g.forristall@siep.shell.com

Stephen F. Barstow

OCEANOR-Oceanographic Company of Norway, Pir-Senteret N7005, Trondheim, Norway

Harald E. Krogstad

Dept. Mathematical Sciences, NTNU N7491, Trondheim, Norway

Marc Prevosto

IFREMER-Center de BREST, BP 70, 29280 Plouzane, France

Paul H. Taylor

Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ UK

Peter S. Tromans

Peter Tromans Engineering, Den Haag Bezuidenhoutseweg 496, 2594 BG Den Haag, The Netherlands

J. Offshore Mech. Arct. Eng 126(1), 26-34 (Mar 02, 2004) (9 pages) doi:10.1115/1.1641388 History: Received October 01, 2002; Revised February 01, 2003; Online March 02, 2004
Copyright © 2004 by ASME
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References

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Barstow, S. F., 2002, Intercomparison of seastate and zerocrossing parameters from the WACSIS field experiment and interpretation with video evidence, Proc. 21st International Conference on Offshore Mechanics and Arctic Engineering, Oslo, OMAE 28448.
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E&P Forum, 1995, Uncertainties in the Design Process, Report 3.15/229, London.
Forristall,  G. Z., 2000, Wave crest distributions: Observations and second order theory, J. Phys. Oceanogr., 30, 1931–1943.
Haring, R. E., A. R. Osborne, and L. P. Spencer, 1976, Extreme wave parameters based on continental shelf storm wave records, Proc. 15th Int. Conf. on Coastal Engineering, Honolulu, HI, 151–170.
Hasofer,  A. M., and Lind,  N. C., 1974, J. Eng. Mech. Div., Am. Soc. Civ. Eng., 100, 111–121.
Kriebel, D. L., and T. H. Dawson, 1993, Nonlinearity in wave crest statistics, Proc. Second Int. Symp. on Ocean Wave Measurement and Analysis, New Orleans, LA, ASCE, 61–75.
Krogstad, H. E., 2002, Analyses and applications of second order models for maximum crest height, Proc. 21st International Conference on Offshore Mechanics and Arctic Engineering, Oslo, OMAE 28479.
Kuik,  A. J., van Vledder,  G. Ph., and Holthuijsen,  L. H., 1988, A method for the routine analysis of pitch-and-roll buoy wave data, J. Phys. Oceanogr., 18, 1020–1034.
Leadbetter, M. R., Lindgren, G., and Rootzen, H., 1983, Extremes and related properties of random sequences and processes, Springer-Verlag, New York.
Longuet-Higgins,  M. S., 1975, On the joint distribution wave periods and amplitude in a random wave field. Proc. R. Soc. A, 389, 24–258.
Prevosto,  M. S., Krogstad,  H. E., and Robin,  A., 2000, Probability distributions for maximum wave and crest heights, Coastal Eng., 40, 329–360.
Prevosto, M., G. Z. Forristall, 2002, Statistics of wave crests from models vs. measurements, Proc. 21st International Conference on Offshore Mechanics and Arctic Engineering, Oslo, OMAE 28443.
Rychli,  I., Johannesson,  P., and Leadbetter,  M. R., 1997, Modeling and statistical analysis of ocean wave data using transformed Gaussian processes. Mar. Struct., 10, 13–47.
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Figures

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North face of the MPN. Most of the instruments were mounted on an arm extending from above the center leg on this face.
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Plan view of the sensor layout on the platform. Sensor locations are shown by green dots. Dimensions are in centimeters and the elevation of the sensors above mean water level is shown next to the name of the sensor. North is toward the top of the figure. The checkerboard pattern denotes the heliport above the main platform structure.
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Sample frame from the digital video files for 16:30:56 on Jan. 3, 1998. A wave which has broken against the platform leg is passing under the Baylor wave staff and Marex radar.
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Power spectra from the platform mounted instruments form April 13, 1998 at 1400. The significant wave height at the time was 3.14 m.
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Crest height ratios for significant wave heights between 4.0 and 4.5 m.
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Comparison of crest height ratios of measurements low pass filtered at 0.64 Hz and second order simulations for significant wave heights between 4.0 and 4.5 m.
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Average linearized ad second order shapes of waves measured by the Saab radar during the storm of Jan. 6, 1988. The legend indicates the amplitude bins over which the averages were taken.
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Joint crest height and crest period distribution from the Baylor wave staff at 1200 on March 1, 1988. The Lund model is that described by Rychlik et al. (1997).
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Probability density of maximum crest heights during the Frigg storm. The water depth has been varied but the storm history has been kept the same.
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Comparisons of crest height ratios of measurements low pass filtered at 0.64 Hz and parametric models of crest heights for significant wave heights between 4.0 and 4.5 m.

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