Influence of Kuroshio Path Variation South of Japan on Formation of Subtropical Mode Water
Influence of Kuroshio Path Variation South of Japan on Formation of Subtropical Mode Water
复制标题
DOI：
10.1175/jpo-d-13-0114.1
复制
发表时间：
2014-04
影响因子：
3.5
通讯作者：
S. Sugimoto;K. Hanawa
中科院分区：
文献类型：
--
作者：
S. Sugimoto;K. Hanawa
利用2005 - 2011年的温盐剖面资料，研究了北太平洋副热带环流西北部的副热带模态水（STMW）分布特征，特别是日本以南黑潮弯曲和非弯曲路径状态。在曲流年的春季，四国盆地出现了位温为19°-20 ° C的暖STMW（位密度异常为24.6-24.9 kg m−3），而在非曲流年，整个日本南部地区都出现了低于19°C的冷STMW。暖STMW形成于四国海盆的暖冬混合层（ML）中，该混合层与黑潮曲流路径相联系，形成了局部环流;黑潮延伸体南部由于空间上孤立的ML而没有与冷ML的水平混合，以及由于与这种局部再循环有关的向西向气流而增加的水平热平流，都导致了ML变暖在四国盆地。个...
AbstractDistributions of subtropical mode water (STMW) in the northwestern part of the North Pacific Subtropical Gyre were investigated, using temperature–salinity profiles from 2005 to 2011, with particular reference to the Kuroshio meander and non-meander path states, south of Japan. In spring of meander years, warm STMW with a potential temperature of 19°–20°C (potential density anomaly of 24.6–24.9 kg m−3) was found in the Shikoku Basin, whereas cold STMW below 19°C was distributed throughout the southern region of Japan in non-meander years. The warm STMW was formed in a spatially isolated and warm winter mixed layer (ML) in the Shikoku Basin, where a local recirculation developed in association with the Kuroshio meander path; both the absence of horizontal mixing with a cold ML south of the Kuroshio Extension because of the spatially isolated ML and an increase in horizontal heat advection due to the westward flow associated with this local recirculation caused the ML warming in the Shikoku Basin. A...