Direct turbulence measurements using TurboMAP over a “small ridge” on the continental shelf off Jogashima, Sagami Bay, Japan revealed an active layer of topographically induced turbulence. The active layer ( = 10-7 - 10-6 W kg-1) located at mid-depth of 200 – 250 m, occurred on alternate side of “small ridge” depending on the direction of the tidal current. This active layer was accompanied by rebounded-isopycnal surfaces 26.0 - 26.1 σθ , in which all in qualitative manner showed an internal hydraulic flow control on the shelf. The turbulence friction velocity was two order of magnitude lower than observed- in this active layer explaining a less role of bottom friction than hydraulic flow to the high turbulence layer.
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机译：使用TurboMAP在日本相模湾城鹿岛附近的大陆架上的“小山脊”上进行直接湍流测量，揭示了地形诱发湍流的活动层。活性层（= 10-7-10-6 W kg-1）位于200 – 250 m的中间深度，取决于潮汐流的方向，位于“小山脊”的另一侧。该活性层伴有等腰回弹表面26.0-26.1σθ，其中所有表面都以定性方式显示了架子上的内部液压流控制。在该活性层中，湍流摩擦速度比观察到的速度低两个数量级，这说明底部摩擦的作用比向高湍流层的液压流的作用要小。
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