Stochastic analysis of ocean wave states with and without rogue waves

Medientyp: E-Artikel

Titel: Stochastic analysis of ocean wave states with and without rogue waves

Beteiligte: Hadjihosseini, Ali [Verfasser:in]; Peinke, Joachim [Verfasser:in]; Hoffmann, Norbert [Verfasser:in]

Körperschaft: Technische Universität Hamburg-Harburg, Dynamics Group ; Technische Universität Hamburg-Harburg

Erschienen: 2014

Sprache: Englisch

DOI: 10.1088/1367-2630/16/5/053037; 10.15480/882.2776

Identifikator:

Schlagwörter: extreme events ; ocean waves ; stochastic analysis methods

Entstehung:

Anmerkungen: Sonstige Körperschaft: Technische Universität-Hamburg-Harburg, Dekanat Maschinenbau, Dynamics Group

Beschreibung: This work presents an analysis of ocean wave data including rogue waves. A stochastic approach based on the theory of Markov processes is applied. With this analysis we achieve a characterization of the scale-dependent complexity of ocean waves by means of a Fokker-Planck equation, providing stochastic information on multi-scale processes. In particular, we show evidence of Markov properties for increment processes, which means that a three-point closure for the complexity of the wave structures seems to be valid. Furthermore, we estimate the parameters of the Fokker-Planck equation by parameter-free data analysis. The resulting Fokker-Planck equations are verified by numerical reconstruction. This work presents a new approach where the coherent structure of rogue waves seems to be integrated into the fundamental statistics of complex wave states. © 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

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