|Budget Amount *help
¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000)
Fiscal Year 2021: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2018: ¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000)
|Outline of Final Research Achievements
Deep currents in the Japan Sea were observed for a long time to investigate mixing processes in the deep oceans. The observational results revealed intermittent occurrence of strong flow periods with vertically varying flow speed. The observed vertical flow structure is caused by a superposition of wind-generated, upward- and downward-propagating internal waves, which is a cause of deep sea mixing. In addition, long-term hydrographic data and numerical simulations showed that the influence of global warming should be taken into consideration in the evaluation of vertical mixing in the oceans.