Ageing and Life Extension of Offshore Facilities
Chapter 12. Implications of the Loads Jip on Extreme Wave Conditions in the North Sea
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Extreme value analysis is used to assess the impact of the new approaches described in the LOADS JIP on the development of metocean wave criteria in the Central North Sea. The use of the Forristall distributions for determining crest and wave heights is well established but this paper compares inferences using those short-term probability distributions with those from the new approaches in LOADS which better reflect wave non-linearity and the effects of wave breaking in intermediate and deep waters. The new distributions also indicate some sensitivity to wave spreading and JONSWAP peakedness and the sensitivity of extreme wave conditions to...