Abstract
Amplitudes and phases of the tidal constituents are computed from harmonic analysis for the ports of Aden and Djibouti from the hourly Sea Level data for the year 2008 at these locations. The analysis shows that the tides are of mixed nature in the area. The ratio F = K1 + O1/M2 +S2 gives a value of 0.87 and 0.85 for Aden and Djibouti stations. The high astronomical tide and low astronomical tides are respectively 1.138 m and − 1.681 m for Aden port and 1.144 m and − 1.671 m for Djibouti port. Tidal amplitudes and phases at both stations are found closely similar. The major constituents of semi-diurnal waves are M2, S2 and N2 tides with amplitudes of 0.476, 0.215 and 0.129 m. The dominant diurnal waves are K1, O1 and P1 tides with amplitudes of 0.401, 0.201 and 0.121 m respectively. Other tidal constituents represented by third, fourth and sixth diurnal constituents, they have small amplitudes. In these groups, the M3, M4 are the major components with amplitudes of 0.005 m, 0.003 m respectively.
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Acknowledgements
Sea Level Data used in this study is obtained from the Sea Level Centre at University of Hawaii (UHSLC). Therefore, the author would like to express his deeply gratitude to them.
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Madah, F.A. The amplitudes and phases of tidal constituents from Harmonic Analysis at two stations in the Gulf of Aden. Earth Syst Environ 4, 321–328 (2020). https://doi.org/10.1007/s41748-020-00152-y
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DOI: https://doi.org/10.1007/s41748-020-00152-y