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http://dx.doi.org/10.9765/KSCOE.2019.31.3.115

Development of a Probabilistic Model for the Estimation of Yearly Workable Wave Condition Period for Offshore Operations - Centering on the Sea off the Ulsan Harbor  

Choi, Se Ho (Department of Civil Engineering, University of Seoul)
Cho, Yong Jun (Department of Civil Engineering, University of Seoul)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.31, no.3, 2019 , pp. 115-128 More about this Journal
Abstract
In this study, a probabilistic model for the estimation of yearly workable wave condition period for offshore operations is developed. In doing so, we first hindcast the significant wave heights and peak periods off the Ulsan every hour from 2003.1.1 to 2017.12.31 based on the meteorological data by JMA (Japan Meterological Agency) and NOAA (National Oceanic and Atmospheric Administration), and SWAN. Then, we proceed to derive the long term significant wave height distribution from the simulated time series using a least square method. It was shown that the agreements are more remarkable in the distribution in line with the Modified Glukhovskiy Distribution than in the three parameters Weibull distribution which has been preferred in the literature. In an effort to develop a more comprehensive probabilistic model for the estimation of yearly workable wave condition period for offshore operations, wave height distribution over the 15 years with individual waves occurring within the unit simulation period (1 hour) being fully taken into account is also derived based on the Borgman Convolution Integral. It is shown that the coefficients of the Modified Glukhovskiy distribution are $A_p=15.92$, $H_p=4.374m$, ${\kappa}_p=1.824$, and the yearly workable wave condition period for offshore work is estimated to be 319 days when a threshold wave height for offshore work is $H_S=1.5m$. In search of a way to validate the probabilistic model derived in this study, we also carry out the wave by wave analysis of the entire time series of numerically simulated significant wave heights over the 15 years to collect every duration periods of waves the height of which are surpassing the threshold height which has been reported to be $H_S=1.5m$ in the field practice in South Korea. It turns out that the average duration period is 45.5 days from 2003 to 2017, which is very close to 46 days from the probabilistic model derived in this study.
Keywords
compound weibull wave height distribution; modified glukhovskiy distribution; borgman Integration; duration time of energetic waves; wave by wave analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Borgman, L.E. 1973. Probabilities for highest wave in hurricane. J. Waterways, Harbors and Coastal Engineering, ASCE 99 (WW2), 185-207.   DOI
2 Cavanie, A., Arhan, M. and Ezraty, R. 1976. A Statistical Relationship between Individual Heights and Periods of Storm Waves. Proc. Conf. on Behaviour of Offshore Structures, 2, 354-360.
3 CIRIA and CUR, 1995. The Rock Manual. The use of rock in hydraulic engineering. C683, CIRIA, London.
4 Forristall, G.Z. 2008. How should we combine long and short term wave height distributions? Proceedings of OMAE08 27th International Conference on Offshore Mechanics and Arctic Engineering, Estoril, Portugal.
5 Glukhovskiy, B.Kh. 1966. Investigation of sea wind waves (in Russian). Leningrad. Proc. of Sea Climatology Conference, 51-71.
6 Goda, Y. 1979. A review on statistical interpretation of wave data, In: Report of the Port and Harbour Research Institute, Japan, 18, 5-32.
7 Goda, Y. 1985. Random seas and design of maritime structures, University of Tokyo Press.
8 Jeong, W.M., Oh, S.H., Ryu, K.H., Back, J.D. and Choi, I.H. 2018. Establishment of wave information network of Korea (WINK). J. Korean Soc. Coast. Ocean Eng., 30(6), 26-336.
9 Klopman, G. 1996. Extreme wave heights in shallow water, H2486, Delft Hydraulics, The Netherlands.
10 Klopman, G. and Stive, M.J.F. 1989. Extreme waves and wave loading in shallow water, paper presented at the E&P Forum Workshop in Paris, Delft Hydraulics, The Netherlands.
11 Korean Ministry of Oceans and Fisheries, 2014. Ocean climate variability, global warming, climate modeling, climate processes, Adaptation, Press release, Date:2014.10.31.
12 Ochi, M.K. 1990. Applied probability and stochastic progresses. University of Florida, Wiley Interscience, USA.
13 Lee, M.H. 1991. A fundamental study on the determination of critical limits and workable days for the construction of breakwaters, Master thesis, National Fisheries University of Pusan.
14 Longuet-Higgins, M.S. 1952. On the statistical distributions of heights of sea waves. J. of Mar. Res., Vol XI, 245-266.
15 Longuet-Higgins, M.S. 1983. On the Joint Distribution of Wave Periods and Amplitudes in a Random Wave Field. Proc. Roy. Soc. of London, 389(A), 241-258.   DOI
16 Park, S.H. and Cho, Y.J. 2019. The joint distribution of wave height and its associated period in nonlinear random waves. Journal of Korean Society of Coastal and Ocean Engineers (submitted).
17 Tayfun, M.A. 1993. Joint distribution of large wave heights and associated periods. Journal of Waterway, Port, Coastal, and Ocean Engineering, 119(3).
18 Tucker, M.J. and Pitt, E.G. 2001. Waves in ocean engineering, Elsevier, Amsterdam.
19 van Vledder, G.P., Ruessink, G. and Rijnsdorp, D.P. 2013. Individual wave height distributions in the coastal zone: Measurements and simulations and the effect of directional spreading. In Coastal Dynamics 2013: 7th International Conference on Coastal Dynamics, Arcachon, France.
20 Ahn, K.M., Chun, H.S., Jeong, W.M., Park, D.D., Kang, T.S. and Hong, S.J. 2013. Analysis of the wave spectral shape parameters for the definition of swell waves. Journal of Korean Society of Coastal and Ocean Engineers, 25(6), 394-404.   DOI
21 Battjes, J.A. 1972. Long term wave height distribution at seven stations around the British Isles. Deutschen Hyd. Zeitschrift, 25, 179-189.   DOI
22 Battjes, J.A. and Groenendijk, H.W. 2000. Wave height distributions on shallow foreshores. Coastal Engineering, 40, 161-182.   DOI
23 Battjes, J.A. 1986. Energy dissipation in breaking solitary and periodic waves. Delft Univ. of Technology, Communic. on Hydr. and Geotechn. Engng, Rep. No. 12 and 86-5.