Análise de maré para o porto de Nacala

Abstract

Tidal modeling has been the subject of several studies to obtain more accurate models. Accurate and accurate. The most common and current method of modeling the tide is harmonic analysis. In harmonic analysis, the tide is represented by the sum of sinusoids - harmonic constituents. The constituents are related to the effect that the orbits of the stars (Sun and Moon) have on the ocean surface. In this work the tides occurring in the Port of Nacala region were analyzed in order to contribute to the study of tidal analysis and prediction at that location. An analysis of the tidal effects, the identification of the harmonic constituents and the tidal predictions of the Nacala Port region were presented in this work. The harmonic analysis method was used for the identification of the constituents and for the proper analysis. , for the tide forecasts for the year 2020 of Nacala Port from the tidal heights recorded from 1975 and 1982 to 1983. 26 constituents were identified for 1975 and 1982-83 and 54 for 2004, of which 4 the most significant are semi-diurnal species, followed by diurnal species. For these results show that the tides are semidiurnal, observing two high and low tide at high tides and two high and low tide at low tides at 24 solar hours, and the maximum observed tidal value was 4.67 meters for Nacala A, 4.49 meters for Nacala B and 4.83 meters for Nacala C and was recorded during high tide, while the minimum value was 0.26, 0.56 and 0.2 meters and was recorded for dead tide.