东海中部陆架高密水在其形成、演变的过程中向东海北部迁移。冬、春和夏季在东海北部济州岛以南海域存在着一高密（条件密度σｔ高于２５．００）、高溶解氧（高于５．０×１０－３）及高盐或次高盐（３４．００左右）性质的水体。韩国以南５０～１００ｍ等深线附近海域也有一高盐、高溶解氧的高密水带。Ｔ－Ｓ和Ｔ－Ｏ２点聚图表明这两块高密水基本属同一水体，韩国以南高密水可能是由济州岛以南高密水经济州岛东岸或东、西岸两侧海区迁移过来的 In the process of its formation and evolution, the highly dense water of the East China Sea shelf shelf migrates to the northern part of the East China Sea. In winter, spring and summer there is a high density (conditional density σt higher than 25.00), high dissolved oxygen (higher than 5.0 × 10-3) and high or sub-high salt ( 34.00 or so) of the nature of the water body. South of Korea 50 ~ 100m isobath deep sea near the sea also has a high salt, high dissolved oxygen high density waters. The T-S and T-O2 plots show that the two high-density waters belong to the same water body. South Korea’s high-density waters may have migrated from the east coast of Jeju Island to the south of Jeju Island or from both sides of the East and West coasts