Existence of eddies at crossroad of the Indonesian seas
Existence of eddies at crossroad of the Indonesian seas
复制标题
印度尼西亚海域十字路口存在涡流
DOI：
10.1007/s10236-011-0489-1
复制
发表时间：
2012
期刊：
影响因子：
2.3
通讯作者：
Atsushi Watanabe
中科院分区：
文献类型：
--
作者：
Aditya R.Kartadikaria;Yasumasa Miyazawa;Kazuo Nadaoka;Atsushi Watanabe
一个涡分辨印度洋-太平洋环流模式被应用于突出整个印度尼西亚海域的涡的行为。由于马卡萨尔海峡入口处地形和海岸线的复杂性，使得海峡入口处的水流不是直线流，而是旋涡流。马卡萨尔海峡的一个岩床和一个狭窄的通道形成了一个屏障，阻碍了来自太平洋的涡旋的继续，但在爪哇海和弗洛雷斯海之间存在一个陡峭的深盆地（深度>500米），这表明可能存在一个涡旋区。根据我们的数值结果，我们描述了一个独特的涡结构的存在下，龙目岛北部，我们指定的“龙目涡”，并验证了它通过执行漂流释放现场实验和审查每月平均气候数据从世界海洋地图集2001年和XBT PX 2跟踪数据。NCEP/NCAR再分析、卫星观测资料和混合层深度分析也证实了这些过程。通过对数值模拟结果和现有温度资料的分析，发现了另外两个涡旋，它们主要是由偏东的局地风和夏季风共同作用的结果。这些涡旋在年际时间尺度上同步变化。它们一起被称为龙目岛涡列（LET），它影响到60米深的表层，涡系统的强度受到12月至2月混合层深度变化的强烈影响。
An eddy-resolving Indo-Pacific ocean circulation model was applied to highlight the behavior of eddies throughout the Indonesian seas. The complexity of the topography and coastline at the entrance of the Makassar Strait induce an eddy-type throughflow, instead of a straightforward flow. A sill and a narrow passage in the Makassar strait creates a barrier and impedes the continuation of eddies from the Pacific ocean, but the existence of a steep deep basin (>500 m depth) between the Java and Flores seas indicates a possible area for eddies. Based on our numerical results, we described the presence of a unique eddy structure north of Lombok Island, which we designated the “Lombok Eddy” and verified it by performing a drifter release field experiment and reviewing monthly mean climatology data from the World Ocean Atlas 2001 and XBT PX2 track data. NCEP/NCAR reanalysis, satellite observation data, and mixed layer depth analysis were also used to confirm these processes. By analyzing numerical simulation results and available temperature datasets, two additional eddies were found. All eddies form primarily due to eastward local winds correlated with seasonal monsoon winds during the austral summer. These eddies vary synchronously at an interannual time scale. Together, they are referred to as the Lombok Eddy Train (LET), which affects the surface layer down to a depth of 60 m, and the intensity of the eddy system is strongly affected by mixed layer depth variability from December to February.