“…The purpose of tidal harmonic analysis is to determine the amplitude and phase (the so-called tidal harmonic constants) of the individual sine waves, each of which represents a tidal constituent identified by its period. Tidal signals can be predicted by harmonic analysis by least square method (Boon and Kiley, 1978;Huang et al, 2002;Huang and Xu, 2009). Tidal harmonic analysis is based on a decomposition of the observed tidal elevations into basic periodic tidal harmonic components.…”