Characteristics of the tides at the two main Harbours of Egypt

الملخص EN

Alexandriaand Port Said are considered as two of the major harbours of Egypt.

they exhibit the same seasonal sea level trend and nearly the same meteorological conditions.

Slight differences in the periodical variations of the tide levels are observed.

The general pattern of the sea level at the Iwo harbours is the high values in summer and low ones in spring season.

The monthly levels are below their averages during the first half of the year and above during the second half.

The principal features of the semi-diurnal tide indicated a ratio of 4.0 betweenspring and neap ranges.

The most pronounced ranges al Alexandria are between 20-30 cm with mean of 22.3 ern and the maximum does not exceed 60 cm.

At Port Said the most marked ranges are between 30-40 cm and the mean is 36.8 em while the maximum may reach more than 70 em,