Spatiotemporal structures of tidal and mean currents in August 2008 and May 2010 were estimated by shipboard ADCP data around the Hachiri-ga-se marine hill in the southwestern Japan Sea. The time variations of the tidal currents were quite similar both in August and May. The vertical structure of tidal and mean currents in August was more baroclinic than that in May. Upwelling region moved when the tidal current varied with time. The upwellings occurred in the convergence region when the horizontal current flowed across the marine hill. The upwellings in August and May mainly occurred at the central and northwestern parts of the Hachiri-ga-se marine hill, respectively. In the case of May 2010, the thermocline was lifted about 10 m near the top of hill along the cross-hill temperature section. It is considered that many zooplankton measured by quantitative echosounder were distributed in the upwelling region.

中文翻译：

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日本海西南部八里加濑海丘周围的潮汐流和上升流时空结构

2008 年 8 月和 2010 年 5 月的潮汐和平均流的时空结构是通过日本海西南部八里加濑海丘周围的船上 ADCP 数据估计的。8 月和 5 月潮汐流的时间变化非常相似。8月潮汐流和平均流的垂向结构比5月更加斜压。当潮流随时间变化时，上升流区发生移动。当水平流流过海山丘时，上涌发生在辐合区。8 月和 5 月的上升流分别主要发生在八里加濑海丘的中部和西北部。在 2010 年 5 月的情况下，温跃层沿跨山温度剖面在山顶附近抬升了约 10 m。