Repeat meridional survey of the Western North Pacific Subtropical Gyre by a VOS ADCP during 1997 to 1998

During 1997 to 1998, near‐surface currents in the western North Pacific subtropical gyre have been measured repeatedly by an ADCP mounted on the hull of the volunteer observing ship (VOS) operated mainly between Japan and Australia. The Kuroshio Current, the Kuroshio Recirculation and the North Equa...

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Bibliographic Details
Published in:Geophysical research letters 2001-09, Vol.28 (18), p.3429-3432
Main Authors: Kaneko, Arata, Yuan, Zhou, Gohda, Noriaki, Arai, Masazumi, Nakajima, Hideo, Zheng, Hong, Sugimoto, Takashige
Format: Article
Language:English
Subjects:
Dynamics of the ocean (upper and deep oceans)
Earth, ocean, space
Exact sciences and technology
External geophysics
Physics of the oceans
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Summary:During 1997 to 1998, near‐surface currents in the western North Pacific subtropical gyre have been measured repeatedly by an ADCP mounted on the hull of the volunteer observing ship (VOS) operated mainly between Japan and Australia. The Kuroshio Current, the Kuroshio Recirculation and the North Equatorial Current are clearly identified as two‐year mean currents in the latitude belt 10–34.5° N. Current variability was dominated by baroclinic Rossby waves or mesoscale eddies over the 10–30° N belt except in the latitude belt 13–17° N where the north‐to‐south shifts of the North Equatorial Current stream axis may dominate current variability. The energy of the mesoscale variability was concentrated to form large peaks around 18.5°N and 23°N.
ISSN:0094-8276
1944-8007
DOI:10.1029/2001GL012887