Beach Hydrodynamic Classification of South Coasts of Caspian Sea- Mazandaran Province

In this study, Mazandaran province's coasts have been classified by using Relative Tide Range, and hydrodynamic models. For this, investigations of waves hydrodynamics, measurement of bed morphology's profiles and sediment characteristics along surfzone, and analyzing of hydrographic maps at 7 stations in east (Neka, Larim and Babolsar), middle (Mahmudabad and Kohnesara) and west parts (Nushahr and Nashtarud) of Mazandaran province have been done. results show that Mazandaran coasts are wave dominate that, by wave energy decreasing and wave period and sediment diameter increasing from east to west of Mazandaran, beach states have been changed from Dissipative to Intermediate and Reflective states, respectively. Seasonal investigations of wind power and morphodynamical structures show that variations in bed morphology and wave dynamics do not cause beach state's changes, seasonally.