Intermediate Waters in the East/Japan Sea
Intermediate Waters in the East/Japan Sea
复制标题
东海/日本海中层水域
DOI：
10.1023/a:1007877610531
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发表时间：
1999
影响因子：
2.3
通讯作者：
Kuh Kim
中科院分区：
文献类型：
--
作者：
Young;Kuh Kim
利用主要在 1995 年夏季采集的 CREAMS 数据对东海/日本海中间层的性质进行了检查。位温、盐度和溶解氧的垂直剖面以及这些物理和化学性质之间的关系表明，250 µmol/l 的溶解氧浓度大致相当于 400 db 深度处的 0.6°C，构成了中层水和深层水的界限。低于 0.6°C 的水体位温与盐度之间的关系非常稳定，而高于 0.6°C 的水体盐度在日本西部盆地比东部盆地低。低盐度高氧水对应于 Kim 和 Chung (1984) 先前确定的东海中层水 (ESIW; <34.06 psu, >250 µmol/l 和 >1.0°C)，而在日本东部盆地发现的高盐度高氧水被命名为高盐度中层水 (HSIW; >34.07 psu, >250 µmol/l 和>0.6°C）。 σϑ=27.2 kg/m3表面盐度和加速势的空间分布表明，日本西部盆地盛行的ESIW是由40°N附近极锋的纬向流向东输送的，日本盆地东部的气旋性环流与HSIW密切相关。
Properties of the intermediate layer in the East/Japan Sea are examined by using CREAMS data taken mainly in summer of 1995. Vertical profiles of potential temperature, salinity and dissolved oxygen and relationships between these physical and chemical properties show that the dissolved oxygen concentration of 250 µmol/l, roughly corresponding to 0.6°C at the depth of about 400 db, makes a boundary between intermediate and deep waters. Water colder than 0.6°C has a very stable relationship between potential temperature and salinity while salinity of the water warmer than 0.6°C is lower in the western Japan Basin than that in the eastern Japan Basin. The low salinity water with high oxygen corresponds to the East Sea Intermediate Water (ESIW; <34.06 psu, >250 µmol/l and >1.0°C) which was previously identified by Kim and Chung (1984) and the high salinity water with high oxygen found in eastern Japan Basin is named as the High Salinity Intermediate Water (HSIW; >34.07 psu, >250 µmol/l and >0.6°C). Spatial distribution of salinity and acceleration potential on the surface of σϑ= 27.2 kg/m3shows that the ESIW prevailing in the western Japan Basin is transported eastward by a zonal flow along the polar front near 40°N and a cyclonic gyre in the eastern Japan Basin is closely related to the HSIW.