동해의 해양심층수 분포 특성

Abstract

Oceanographic observation and qualitative analysis for deep ocean water in the East Sea were carried out in order to understand the characteristics of deep sea water in the East Sea. Temporal and spatial variation of water masses were discussed from survey of the study area including the coastal sea in the East Sea. Surface water mass in coastal sea in the East Sa is governed by Korean Cold surface water in winter and affected by Tsushima warm current in summer. Especially in summer when the Tsushima warm current become strong, warm eddies are frequently formed in the polar front. These warm eddies have effect on the vertical profiles of water temperature, but its influence is limited within water depth of 300 meter. The East Sea Proper Water existed below water depth of 300 meter has water stability of low temperature less than 1.0 ℃ without influence of warm eddy.