Analysis of wind speed observations over the North Sea

Wind speed observations of three offshore platforms over the period 1985–1992 have been analysed. These platforms located in the southern North Sea off the Dutch coast, are: K13 Platform (K13), Euro Platform (EPF) and Measuring Post Noordwijk (MPN). First, a statistical analysis of the data was perf...

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Veröffentlicht in:Journal of wind engineering and industrial aerodynamics 1996, Vol.61 (1), p.51-69
Hauptverfasser: Coelingh, J.P., van Wijk, A.J.M., Holtslag, A.A.M.
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container_issue 1
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container_title Journal of wind engineering and industrial aerodynamics
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creator Coelingh, J.P.
van Wijk, A.J.M.
Holtslag, A.A.M.
description Wind speed observations of three offshore platforms over the period 1985–1992 have been analysed. These platforms located in the southern North Sea off the Dutch coast, are: K13 Platform (K13), Euro Platform (EPF) and Measuring Post Noordwijk (MPN). First, a statistical analysis of the data was performed, including calculation of mean wind speeds, availability of data, annual and diurnal variations, the Weibull parameters and the distribution by wind direction. Then, in order to compare the wind speeds of the platforms measured at different heights, Monin-Obukhov similarity theory was applied. Therefore, air and seawater temperature data were used from observations on the platforms (if available) or from Voluntary Observing Ships. The seawater temperatures were fitted to a sine function. Although, on a yearly average, (very) unstable conditions prevail, the calculated wind profiles showed hardly any difference between the logarithmic and the diabatic wind profile. On a seasonal basis, however, the logarithmic and diabatic wind profile differ significantly, for the spring season in particular. Wind speeds increased with increasing distance from the coast.
doi_str_mv 10.1016/0167-6105(96)00043-8
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These platforms located in the southern North Sea off the Dutch coast, are: K13 Platform (K13), Euro Platform (EPF) and Measuring Post Noordwijk (MPN). First, a statistical analysis of the data was performed, including calculation of mean wind speeds, availability of data, annual and diurnal variations, the Weibull parameters and the distribution by wind direction. Then, in order to compare the wind speeds of the platforms measured at different heights, Monin-Obukhov similarity theory was applied. Therefore, air and seawater temperature data were used from observations on the platforms (if available) or from Voluntary Observing Ships. The seawater temperatures were fitted to a sine function. Although, on a yearly average, (very) unstable conditions prevail, the calculated wind profiles showed hardly any difference between the logarithmic and the diabatic wind profile. 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source ScienceDirect Journals (5 years ago - present)
subjects Aerodynamics
Calculations
Coastal environments
Data reduction
Distance
Height
Marine
Mathematical analysis
Mechanical variables measurement
Oceanography
Offshore drilling rigs
Offshore engineering
Production platforms
Seawater
Ships
Similarity
Speed
Statistical analysis
Statistical methods
Temperature
Variations
Weibull distribution
Wind engineering
Wind speed
title Analysis of wind speed observations over the North Sea
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