Field Study of Longshore Current along the Anzali Coast in Caspian Sea

Waves are changed on shallow water; one of the most common changes is breaking of these waves. Near-shore wave breaking generates longshore current which is studied in Anzali Coast during the present study. The velocity of current as well as the pattern of long- shore current were calculated and modeled using the most appropriate equations and field data. The beach slope is computed in this study using the hydrographic map of the study area and then the velocity of long-shore currents are calculated by employing mathematical equations, field data collected by buoy in Anzali Station and also the long-term wave rose diagram available through Anzali Station. The obtained current velocities are compared with values obtained through ADCP current meter along the shoreline in Anzali Station. Finally the most suitable equation is applied regarding the results of comparison and then calibration coefficient is estimated for the employed equation.