CHARA CTERISTICS OF COASTAL CURRENTS IN TOMAKOMAI COAST

Abstract

To understand the environments of water quality, sediments and ecology in a coastal sea area, the characteristics of coastal currents must be clarified, In this study, we analyzed observation data of flow velocity and wind velocity in Tomakomai Coast including the area of Mukawa River mouth.
Along Tomakomai Coast, a strong south-west or south-east wind often cased eastward or westward currents parallel to the shoreline in winter. Flow velocity in offshore of Siraoi Coast was strong and more than 30cm/s at a depth of 50m. In both summer and winter wind occurred currents parallel to the shoreline.In summer, fiow fluctuations with the period of about one day were occured by sea and land wind.