The upper portion of the Japan Sea Proper Water; Its source and circulation as deduced from isopycnal analysis
The upper portion of the Japan Sea Proper Water; Its source and circulation as deduced from isopycnal analysis
复制标题
日本海固有水域的上部；
DOI：
10.1007/bf02270499
复制
发表时间：
1994
影响因子：
2.3
通讯作者：
H. Sudo
中科院分区：
文献类型：
--
作者：
T. Senjyu;H. Sudo
本文分析了1964 ~ 1985年不同季节的所有水文站资料（温度、盐度、溶解氧、磷酸盐和硝酸盐），以说明日本海固有水（UJSPW）的上部是在哪里形成的以及它是如何循环的。从水的垂直分布来看，日本海本体水可分为上部和在σ1（势密度，1000 db）深度32.05 kg m−3表面处的深水。40°N以北的UJSPW冬季溶解氧含量增加，磷酸盐含量减少，而40°N以南的UJSPW季节变化不明显。根据AOU与等密度面营养盐之间的关系计算的初始营养盐含量显示，日本海没有显着的区域差异;这表明UJSPW起源于单一水团。根据深度、溶解氧和磷酸盐在σ1 32.03 kg m−3表面上的分布、岩芯厚度分布和次表层磷酸盐的分布，推测UJSPW是在136°E以西、40° ~ 43°N之间的冬季对流形成的，并沿沿着大陆平流进入大和海隆以西地区，最后必然进入大和盆地。
All of the available hydrographic station data (temperature, salinity, dissolved oxygen, phosphate and nitrate) taken in various seasons from 1964 to 1985 are analyzed to show where the upper portion of the Japan Sea Proper Water (UJSPW) is formed and how it circulates. From vertical distributions of water properties, the Japan Sea Proper Water can be divided into an upper portion and a deep water at the σ1 (potential density referred to 1000 db) depth of 32.05 kg m−3 surface. The UJSPW in the north of 40°N increases in dissolved oxygen contents and decreases in phosphate contents in winter, while no significant seasonal variation is seen in the south of 40°N. Initial nutrient contents calculated from relationships between AOU and nutrients on isopycnal surfaces show no significant regional difference in the Japan Sea; this suggests that the UJSPW has originated from a single water mass. From depth, dissolved oxygen and phosphate distributions on σ1 32.03 kg m−3 surface, core thickness distribution and subsurface phosphate distribution, it is inferred that the UJSPW is formed by the wintertime convection in the region west of 136°E between 40° and 43°N, and advected into the region west of the Yamato Rise along the Continent; finally, it must enter into the Yamato Basin.