Mohamed A Elsayed
On the Linear and Nonlinear Interaction between Wind and Wave
Linear and nonlinear wind-wave interactions are analyzed using wavelet linear coherence and wavelet bicoherence
respectively. A ed record of simultaneously measured wind speed and wave height during a mistral event is
divided into five segments, and the computations of the wavelet linear coherence and wavelet bicoherence are conducted
for the whole record and for all divided segments.
In computing wavelet bicoherence, we consider both sum and difference rules of frequencies in order to have a
complete picture of the phase coupling between wind speed and wave height. The results show that dividing the windwave
record into segments gives the ability of exploring the detailed linear and nonlinear wind-wave interactions
through the use of wavelet linear coherence and wavelet bicoherence.