Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak

Abstract From the analysis of oceanic eddies detected in the drifter trajectories of the Global Drifter Program (GDP) data set, it was found that oceanic eddies are asymmetrically distributed across the Kuroshio in the East China Sea: predominant cyclonic (anticyclonic) eddies are on the western (ea...

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Autores principales:	Yu Liu, Changming Dong, Xiaohui Liu, Jihai Dong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6a1530475bad44bc8b06575d5b209a4f
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spelling	oai:doaj.org-article:6a1530475bad44bc8b06575d5b209a4f2021-12-02T12:30:46ZAntisymmetry of oceanic eddies across the Kuroshio over a shelfbreak10.1038/s41598-017-07059-12045-2322https://doaj.org/article/6a1530475bad44bc8b06575d5b209a4f2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07059-1https://doaj.org/toc/2045-2322Abstract From the analysis of oceanic eddies detected in the drifter trajectories of the Global Drifter Program (GDP) data set, it was found that oceanic eddies are asymmetrically distributed across the Kuroshio in the East China Sea: predominant cyclonic (anticyclonic) eddies are on the western (eastern) sides of Kuroshio. This distribution is confirmed by high-resolution numerical modeling output as well. Most of these eddies are 5~20 km in radius, less than the local first baroclinic deformation radius, thus categorized as submesoscale. The generation mechanism of these submesoscale eddies is speculated to be related to the horizontal velocity shear of the Kuroshio when it flows northeastward along the shelf break in the East China Sea. The budget analysis of eddy kinetic energy shows that both the horizontal shear and vertical buoyancy flux are important energy sources for eddy generation on the two sides of Kuroshio axis. The finding highlights the unique feature of oceanic eddies along the western boundary currents.Yu LiuChangming DongXiaohui LiuJihai DongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yu Liu Changming Dong Xiaohui Liu Jihai Dong Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak
description	Abstract From the analysis of oceanic eddies detected in the drifter trajectories of the Global Drifter Program (GDP) data set, it was found that oceanic eddies are asymmetrically distributed across the Kuroshio in the East China Sea: predominant cyclonic (anticyclonic) eddies are on the western (eastern) sides of Kuroshio. This distribution is confirmed by high-resolution numerical modeling output as well. Most of these eddies are 5~20 km in radius, less than the local first baroclinic deformation radius, thus categorized as submesoscale. The generation mechanism of these submesoscale eddies is speculated to be related to the horizontal velocity shear of the Kuroshio when it flows northeastward along the shelf break in the East China Sea. The budget analysis of eddy kinetic energy shows that both the horizontal shear and vertical buoyancy flux are important energy sources for eddy generation on the two sides of Kuroshio axis. The finding highlights the unique feature of oceanic eddies along the western boundary currents.
format	article
author	Yu Liu Changming Dong Xiaohui Liu Jihai Dong
author_facet	Yu Liu Changming Dong Xiaohui Liu Jihai Dong
author_sort	Yu Liu
title	Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak
title_short	Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak
title_full	Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak
title_fullStr	Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak
title_full_unstemmed	Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak
title_sort	antisymmetry of oceanic eddies across the kuroshio over a shelfbreak
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6a1530475bad44bc8b06575d5b209a4f
work_keys_str_mv	AT yuliu antisymmetryofoceaniceddiesacrossthekuroshiooverashelfbreak AT changmingdong antisymmetryofoceaniceddiesacrossthekuroshiooverashelfbreak AT xiaohuiliu antisymmetryofoceaniceddiesacrossthekuroshiooverashelfbreak AT jihaidong antisymmetryofoceaniceddiesacrossthekuroshiooverashelfbreak
_version_	1718394340467802112

Antisymmetry of oceanic eddies across the Kuroshio over a shelfbreak

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