Fig. 3: Tidal and wave velocity records.

a Time series of 60-min moving average velocity \({U}_{{{{\rm{c}}}},{{{\rm{TCM}}}}}\). b Time series of hourly-averaged wave velocity \({U}_{{{{\rm{w}}}}}\), defined as \(\sqrt{2}\) multiplied by hourly-averaged root-mean-square velocity, \({U}_{{{{\rm{w}}}},{{{\rm{RMS}}}}}\).