TOPOGRAPHICALLY INDUCED TURBULENCE ON CONTINENTAL SHELF OFF JOGASHIMA, SAGAMI BAY, JAPAN

Yuli Naulita

Abstract

ABSTRACT

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.

Keywords: topographically induced turbulence, continental shelf, internal hydraulic flow

Authors

Yuli Naulita
naulita@ipb.ac.id (Primary Contact)
NaulitaY. (2015). TOPOGRAPHICALLY INDUCED TURBULENCE ON CONTINENTAL SHELF OFF JOGASHIMA, SAGAMI BAY, JAPAN. Jurnal Ilmu Dan Teknologi Kelautan Tropis, 6(2). https://doi.org/10.29244/jitkt.v6i2.9023

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