THE EFFECT OF CASPIAN SEA WATER LEVEL CHANGES ON NOWSHAHR HARBOR SEDIMENTATION

The mean water level at Caspian Sea has been changed dramatically during the last centuary. It has been decreased continuosly for about 50 years down to -3.2m and then increased for 20 years up to +2.5m. The effect of water level changes on Nowshahr harbor sedimentation (South ofCaspian Sea) has been studied. The trend of shoreline changes, sediment dredging and yearly hydrographies has been considered. One-line and 2D simulations have been used in order to predict sedimentation at the harbor entrance. The effect of sea level changes on sediment bypassing and sediment storage at the upstream shore has been calculated. The wave and flow pattern around the harbor has been simulated in different conditions in order to check the possibility of sediment movment from the downstream shoreline into the harbor entrance. The results show that sea level rise has reduced sedimentation problems considerably during 1977 to 1995

کلیدواژه ها:

Noushahr Harbor Sedimentation ، Caspian Sea Water Level Change