Author(s)

M.R. Belmont, R.W.F. Thurley, J.M.K. Horwood & K. Bogsjö

Abstract

Some consequences for marine simulators of statistical coherence within the phase spectrum of sea waves M.R. Belmont, R.W.F. Thurley, J.M.K. Horwood & K. Bogsjo School of Engineering and Computer Science, University of Exeter Abstract Statistical dependence within the phase spectrum of simulated swell seas are examined in terms its effect upon the precision of short term deterministic wave prediction models. Numerical experiments show that such local coherence increases the prediction accuracy. Analytic models are developed of the prediction which explain the sensitivity of the prediction model parameters when neighbouring phase values are uncorrelated. The possibility of some degree of coherence in certain types of sea-wave are considered and sectional phase autocorrelations are presented which demonstrate such coherence in real sea data. 1 Introduction The huge complexity of real ocean basins has meant that the stochastic view of sea-waves developed by Pierson and Neumann, [1,2,3], has provi

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