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TECHNICAL PAPERS

Seasonal Modeling of Multivariate Distributions of Metocean Parameters With Application to Marine Operations

[+] Author and Article Information
Sébastien Fouques

Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norwaye-mail: fouques@marin.ntnu.no

Dag Myrhaug

Department of Marine Technology, Norwegian University of Science and Technology, NO-7491 Trondheim, Norwaye-mail: dagmyr@marin.ntnu.no

Finn Gunnar Nielsen

Norsk Hydro ASA, NO-5020 Bergen, Norwaye-mail: finn.gunnar.nielsen@hydro.com

J. Offshore Mech. Arct. Eng 126(3), 202-212 (Sep 20, 2004) (11 pages) doi:10.1115/1.1782916 History: Online September 20, 2004
Copyright © 2004 by ASME
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References

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Figures

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Normalized spectral densities of μHHH* and σH*.
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Monthly crossing frequencies of U*. Solid line=data from individual months. Dashed line=data from the whole U* time series.
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Comparison of the generalized gamma and 3-parameter weibull distributions for the fit of pH*(h*).Histogram=statfjord data.
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pH* and pU* fitted by generalized gamma ((a) and (b) respectively) and pΨH*(H*) and pΨU*(U*) fitted by the standard normal distribution ((c) and (d) respectively). Histograms=statfjord data.
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Comparison of different models for pH*,U*(h*,u*). Solid lines=models. Dashed lines=data. (Logarithmic contour).
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Comparison model/data for pH,U(h,u) for January (Logarithmic contour)
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Comparison model/data for pH,U(h,u) for July (Logarithmic contour)
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Comparison model/data for pH*,Tz*|U*(h*,tz*|u*) for u*=−1 (Logarithmic contour)
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Comparison model/data for pH*,Tz*|U*(h*,tz*|u*) for u*=1 (Logarithmic contour)
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Comparison model/data for pH*,Tz*|U*(h*,tz*|u*) for u*=2 (Logarithmic contour)
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Frequency of occurence of weather windows for h<3.25m and u<9.5ms−1.Curves=model for various instants. Circles=Statfjord data for the considered period
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Frequency of occurence of weather windows for h<2.25m and u<12.5ms−1.Curves=model for various instants. Circles=Statfjord data for the considered period
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Joint probability of H and Tz for 1st January
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Joint probability of H and Tz for 1st July

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