p. 31 - 41 LA VARIATION DU PROFIL SUR LA PLAGE D'AGIGEA INSTITUT Glicherie Caraivan Institut de Geologie et Geophysique Bucuresti Abstract The author establish the relations between differents beach and wave parameters. It comes out that exist a hydrodynamic threshold, delimi- ting the erozion and deposition processes. At Agigea beach this threshold correspond to one hydrodynamic regime generated by breaker waves of 40 to 50 cm high, and the frequence of 10 to 11 waves per minute.