General pattern of Alexandria western harbor sea level change

• Published in: Majallat Kullīyat ʻUlūm al-Biḥār Vol. 21; no. 2; pp. 47 - 61
• Main Authors: Husayn, M. Husayn, Majid Muhammad Abd al-Munim, Tayil, Muhammad Fathi, Mursi, Zaynab Abd al-Aziz
• Format: Journal Article
• Language: Arabic; English
• Published: Jiddah, Saudi Arabia King Abdulaziz University, Scientific Publishing Center 2010
• ISSN: 1012-8840
• DOI: 10.4197/Mar.21-2.4

For the safety of navigations at the western harbor of Alexandria, the different variations and seasonal deviations of sea level behavior at the harbor have been obtained by analyzing the monthly changes on water levels through the period (1997-2004). The highest levels are expected about August (60.5 cm) and the lowest are to be at March (40.5 cm). The mean sea level obtained was 50.6 cm. Elevations of sea level extreme are presented and showed maximum observed water level of 76.9 cm and a minimum one of 27.9 cm. The hourly sea level has been analyzed harmonically with the purpose of obtaining the tidal constituents. The most effective constituents are M2 (6.9 cm), S2 (4.2 cm), K1 (1.6 cm) and O1 (1.2 cm). Estimations of the frequency distribution for both observed and predicted sea level have been made and showed coincidence between the two levels except winter months. Information about the major tidal phenomena and the dominant feature of Alexandria harbor tide are obtained.