동해연구소 주변해역에서 연안류와 파랑의 특성

Abstract

ESRI, KORDI is located at the southeastern coasts of Korea. Since she is under the complex spatio-temporal influences of natural and anthropogenic factors such as waste water disposal from the nuclear power plant to the north, seasonal freshwater discharge from Hujong Stream in summer, coastal erosion/sedimentation, and of East Sea Warm Current flowing northwards to the offshore. In order to examine seasonal variation of seawater properties and the correlation between winds and nearshore currents, marine and meteorological parameters have been monitored in a near real-time basis since July 2008 (Fig.1 and Table 1).Longshore currents flow southwards through the water column along the coasts; mean surface(bottom) currents reach 6 cm/s- (-3.7cm/s) and -4.8 cm/s (-4.4 cm/s) in zonal and meridional components, respectively, which have been obtained from ADCP transit survey and continuously moored currents by RDCP-600. Entrained with the longshore currents, waste water from the nuclear power plant and freshwater discharged from Hujong Stream has been dispersed southwards, which is approximately 6℃ higher than the neighboring water around the northern opening of the plant (Fig.2). Incident waves are dominantly approached from the northeast, the average height and period of which are about 1 meter and 5.3 seconds, respectively, and they are highly correlated with the easterly winds (Fig.3).