Abstract
Tidal currents were measured at the stationary station in the Suonda sound in late summer, 2005. The inertia current was obtained from the residual data which was produced by elimination of the main four tidal components, M2, S2, K1, and 01, from the raw data. The time-dependent drift currents could be also obtained through the analysis of the residual data. These currents were verified by the analytical solution of the wind-induced current in the basin with the finite depth. The analytical solution has suggested that the steady drift current with Ekman spiral is not observed explicitly in coastal waters and can be given only by averaging the transient drift current over the inertia period.
