Bulletin des sciences géographiques de l'INCT
Volume 10, Numéro 2, Pages 18-20
2006-10-31
Determination Of The Mean Sea Level At Algiers Harbour From The Tidal Data Analysis
Authors : Haddad M . Abdellaoui H . Amrane N .
Abstract
The present study aims at defining a national sea level reference in Alge1ia and can be integrated in other oceanographic projects for determination of the mean sea level. Whatever the p1inciple of measure is. a tide gauge is able to provide a local information on the height of the sea referred to the chosen reference. The main points of this study are: the calibration of the data of the electronic tidal gauge with an automatic data acquisition system installed in Algiers harbour; the comparison of these data with the data acquired from the analogical tidal gauge installed on the same site; and the determination of the mean sea level using the harmonic analysis. The exploitation of the data recorded with the electronic tide gauge of Algiers during a period of two years provide an estimate of the mean sea level and the harmonic components which can be also used for the prediction. The estimated mean sea level differs by a few centimeters of the actual value currently used which was determined in a "arbitrary" way.
Keywords
Electronic tide gauge, analogical tide gauge. calibration. mean sea level. hamonic analysis.
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