## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 2 |

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Page 427

Design directional waves are then derived so that the desired reliability levels are

obtained. INTRODUCTION For code-based LRFD and for reliability-based

assessment of offshore structures such as steel platforms it is essential that

consistent stochastic models for the main melocean parameters are available.

The most important metocean parameters are the

maximum individual wave height, maximum crest height, wind speed, current

speed and water ...

Design directional waves are then derived so that the desired reliability levels are

obtained. INTRODUCTION For code-based LRFD and for reliability-based

assessment of offshore structures such as steel platforms it is essential that

consistent stochastic models for the main melocean parameters are available.

The most important metocean parameters are the

**significant wave height**,maximum individual wave height, maximum crest height, wind speed, current

speed and water ...

Page 428

The probability distribution for the annual maximum individual wave heights is

determined by convolving of the short-term cumulative probability function (CDF)

for the maximum individual wave heights in a storm given the peak

short-term distribution for maximum individual waves. It has been shown that this

distribution ...

The probability distribution for the annual maximum individual wave heights is

determined by convolving of the short-term cumulative probability function (CDF)

for the maximum individual wave heights in a storm given the peak

**significant****wave height**with the long-term probability density function (PDF) for peak**significant wave heights**. The Gumbel distribution is selected for modelling theshort-term distribution for maximum individual waves. It has been shown that this

distribution ...

Page 431

Table 2. Estimated statistical parameters and characteristic

MODEL FOR ANNUAL MAXIMUM INDIVIDUAL WAVE HEIGHTS The

unconditional cumulative distribution function for the annual maximum individual

wave height is given by: F*m (*) = / FH_ (* I H's - hs )/„; (A, )dh. (9) where FH>> (h

IHS) is the conditional distribution function for the maximum wave height given

the peak significant ...

Table 2. Estimated statistical parameters and characteristic

**significant wave****height**(in meters). Directional correlation is taken into account. STOCHASTICMODEL FOR ANNUAL MAXIMUM INDIVIDUAL WAVE HEIGHTS The

unconditional cumulative distribution function for the annual maximum individual

wave height is given by: F*m (*) = / FH_ (* I H's - hs )/„; (A, )dh. (9) where FH>> (h

IHS) is the conditional distribution function for the maximum wave height given

the peak significant ...

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