Mesoscale/sub-mesoscale variability of the Alboran Sea and the 3D circulation of Nador Lagoon (Morocco)

Mesoscale/sub-mesoscale variability of the Alboran Sea and the 3D circulation of Nador Lagoon (Morocco)

This study describes some aspects of the physical oceanography of Nador Lagoon (Eastern Morocco) and characterizes the circulation and the dispersion of Mediterranean water into this lagoon, using long recordings of wind, sea level and currents during spring 2001 and the HD/AD modules of the integra...

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Hauptverfasser: Hilmi, K, Orbi, A, Lakhdar, JI, Chagdali, M, Briand, F
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creator Hilmi, K
Orbi, A
Lakhdar, JI
Chagdali, M
Briand, F
description This study describes some aspects of the physical oceanography of Nador Lagoon (Eastern Morocco) and characterizes the circulation and the dispersion of Mediterranean water into this lagoon, using long recordings of wind, sea level and currents during spring 2001 and the HD/AD modules of the integrated MIKE 3 modeling system from DHI (Denmark). The surface of the lagoon is about 115 km super(2) and its mean depth is 3-4 m, with a maximal depth in the center (6-7m). The M2 amplitude decreases from 13 cm outside the entrance channel to 3 cm inside the lagoon and its relative phase is retarded by about 3 hours as it enters the lagoon. This sets up tidal currents of about 1 m S super(-1) at the entrance which decrease progressive]y along both the south/north shores of the lagoon. Inside the lagoon, tidal currents remain very weak near the bottom (
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The surface of the lagoon is about 115 km super(2) and its mean depth is 3-4 m, with a maximal depth in the center (6-7m). The M2 amplitude decreases from 13 cm outside the entrance channel to 3 cm inside the lagoon and its relative phase is retarded by about 3 hours as it enters the lagoon. This sets up tidal currents of about 1 m S super(-1) at the entrance which decrease progressive]y along both the south/north shores of the lagoon. Inside the lagoon, tidal currents remain very weak near the bottom (&lt;0.02 m/s). Predominant winds, acting at time scales from two to ten days, blow from the north-west and from the east and produce down-wind coastal currents close to both the north and south shores of the lagoon. Close to the bottom, currents are directed up-wind. Mediterranean waters disperse inside the lagoon mainly along the northern banks reaching first both ends of the lagoon. 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subjects Marine
title Mesoscale/sub-mesoscale variability of the Alboran Sea and the 3D circulation of Nador Lagoon (Morocco)
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