Estudo preliminar da maré e das correntes de maré da região estuarina de Cananéia (25ºS-48ºW)

Abstract

• Abstract: A preliminary study of tidal heigbt and tidal current data from Cananéia region made tbrougb harmonic and spectral analysis shows different amplifications and phase delays of the principal tidal components inwards the estuary. M3 tidaI component is particularly amplified in Mar de Cananéia-Mar Pequeno, probably because of near-resonance conditions in the channel. Tidal currents in Mar de Cubatão and Mar de Cananéia show, besides the semidiurnal components, sig-nificative presence of M3 and M4 constituents. Residual current spectra show two maio peaks: one , of tidal frequency, attributed to tidal pumping; another, of subtidal frequency, attributed to a long-period cumulative effect, associated to the estuary mean leveI variation.