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首页> 外文期刊>Journal of oceanography >The behavior and the role of the anti-cyclonic eddy in the Kuroshio large meander development
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The behavior and the role of the anti-cyclonic eddy in the Kuroshio large meander development

机译：反气旋涡在黑潮大曲流发育中的行为和作用

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The processes underlying the development of the Kuroshio large meanders that occurred in 1986 and 1989 are investigated using a satellite SST data set and hydrographic data. In both processes visible on the satellite SST images, a round-shaped, lower SST region with a diameter of about 200 km is found to the east of the Kuroshio small “trigger” meander (Solomon, 1978) until the region became extinguished near theEnshu Nada. The lower SST region can be interpreted as an anti cyclonic eddy, mainly because of the existence of a warm water mass in the subsurface layer of this region. The warm water mass is characterized by a constant temperature of 18–19°C, the maximum thickness of which is about 400 m. The satellite images show that the eddy is closely related to the Kuroshio path transforming into a shape like the letter “S”. This means that the eddy plays an important role in the development of the Kuroshio large meander since this, too, tends to follow an “S”-shaped path. Added to this, the subsurface layer structure of the eddy is similar to that of the warm water mass offShikoku. This similarity, together with the eddy behavior visible on the satellite SST images, implies that the examined eddy corresponds to the warm water mass offShikoku. In other words, the warm water mass offShikoku can be advected near to theEnshu Nada when the Kuroshio large meander occurs.
机译：使用卫星SST数据集和水文数据，研究了1986年和1989年发生的黑潮大弯流发展的过程。在卫星SST影像上可见的两个过程中，在黑潮小“触发”曲折的东部发现了一个直径约200 km的圆形，下部SST区域（Solomon，1978年），直到该区域在恩集附近被熄灭为止。娜达下部SST区域可以解释为反气旋涡，主要是因为该区域的地下层中存在温水团。温暖的水团的特征是18–19°C的恒定温度，最大厚度约为400 m。卫星图像显示，涡流与黑潮路径转化为字母“ S”的形状密切相关。这意味着涡流在黑潮大曲流的发展中起着重要作用，因为这也倾向于遵循“ S”形的路径。除此之外，涡流的地下层结构类似于四国以外的温水团的结构。这种相似性以及在卫星SST图像上可见的涡流行为，意味着所检查的涡流对应于四国附近的温水团。换句话说，当黑潮大曲折发生时，四国海域的温水团可被推向恩州那达附近。

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