Breaking of unsteady lee waves generated by diurnal tides

Nakamura, T.; Isoda, Y.; Mitsudera, H. et al.

Geophysical Research Letters, 2010, 37, L04602

Permalink : https://hdl.handle.net/2115/43790

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アクセス権	open access
URI	https://hdl.handle.net/2115/43790
タイトル	Breaking of unsteady lee waves generated by diurnal tides
著者	Nakamura, T. ; Isoda, Y. ; Mitsudera, H. ; Takagi, S. ; Nagasawa, M.
著者名 Nakamura, T.
e-Rad_Researcher 10193393 著者名 Isoda, Y.
著者名 Mitsudera, H.
著者名 Takagi, S.
著者名 Nagasawa, M.
言語	英語
発行日	2010-02-20
出版者	American Geophysical Union
収録物名	Geophysical Research Letters
巻(号)	37
ページ	L04602
抄録	Diapycnal mixing caused through breaking of large-amplitude internal lee waves generated by sub-inertial diurnal tides, which are modulated with a 18.6-year period, is hypothesized to be fundamental to both the intermediate-layer ventilation and the bi-decadal oscillation around the North Pacific Ocean. The first observational evidence of such wave breaking is presented here. The breaking wave observed had ∼200 m height and ∼1 km width, and its associated diapycnal mixing was estimated to be ∼1.5 m2 s^[-1], with a temporal average ∼10^[4] times larger than typical values in the open oceans. Our estimate suggests that a similar mixing process occurs globally, particularly around the Pacific and Antarctic Oceans.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2010 by the American Geophysical Union
PISSN	0094-8276
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1029/2009GL041456