Group Structure in Random Seas

Abstract
Markov theory for statistics of runs of high waves in a random sea is extended to include the special case where runs consist of two or more high waves, that is, for the case of wave groups. Expressions are derived for the average number of waves forming the groups, for the relative number of groups expected, and for the average number of waves between the beginnings of groups. Theoretical results are shown to be in good agreement with data determined from laboratory and computer simulations and from field measurements.

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