scholarly journals Interannual variability of the Kuroshio onshore intrusion along the East China Sea shelf break: Effect of the Kuroshio volume transport

2014 ◽  
Vol 119 (9) ◽  
pp. 6190-6209 ◽  
Author(s):  
Chuanyu Liu ◽  
Fan Wang ◽  
Xinping Chen ◽  
Jin-Song von Storch
Keyword(s):  
Interannual Variability ◽  
East China Sea ◽  
Volume Transport ◽  
Shelf Break ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
East China Sea Shelf ◽  
The Kuroshio

scholarly journals Progress of Studies on Circulation Dynamics in the East China Sea: The Kuroshio Exchanges With the Shelf Currents

2021 ◽  
Vol 8 ◽  
Author(s):  
Zhiqiang Liu ◽  
Jianping Gan ◽  
Jianyu Hu ◽  
Hui Wu ◽  
Zhongya Cai ◽  
...  
Keyword(s):  
East China Sea ◽  
Volume Transport ◽  
Spatial Variations ◽  
East China ◽  
Exchange Flow ◽  
The East China Sea ◽  
China Sea ◽  
Slope Topography ◽  
Circulation Dynamics ◽  
The Kuroshio

This paper reviews recent advances in the circulation dynamics of the Kuroshio and its interaction with shelf currents in the East China Sea (ECS). The annually averaged Kuroshio volume transport varies between 19 and 24 Sv, based on different observations, but there is no consensus on which season its volume transport peaks. The Kuroshio is intensified over the central slope of the ECS from that off the northeast of Taiwan. The total Kuroshio intrusion into the ECS shelf is estimated to be 1.3–1.4 Sv, deduced from the observed volume transport of exchange flow in the Taiwan and Tsushima Straits, based on the assumption of volume conversation over the shelf. However, the uncertainty regarding this estimation remains due to the absence of sufficient observations and understanding of the Kuroshio dynamics. The Kuroshio intrusions over the shelf off the northeast of Taiwan and southwest of Kyushu are stimulated by planetary or topographic β -effect associated with the alongshore variations in the ECS slope topography and altered by variations in the Kuroshio intensity, shear stress, and baroclinicity. Multilayered exchanges between the Kuroshio and shelf currents were found between 100- and 200-m isobaths along the central ECS slope. The spatial variations in these exchanges are governed by cross-isobath transport by geostrophy, whereas bottom Ekman transport may play a predominant role in altering the integrated exchange flow along the slope. Although the intrusion is greatly modulated along the path of the Kuroshio in the ECS by variable slope topography, there are few observations on the spatial variations of these exchange flows. The characteristics and variations in the circulation and hydrographic properties of waters between 100- and 200-m isobaths significantly determine the general ECS circulation, about which consensus has still not been attained.

scholarly journals Seasonal and interannual changes of the Kuroshio intrusion onto the East China Sea Shelf

2014 ◽  
Vol 119 (8) ◽  
pp. 5039-5051 ◽  
Author(s):  
Chau-Ron Wu ◽  
Yi-Chia Hsin ◽  
Tzu-Ling Chiang ◽  
Yong-Fu Lin ◽  
I-Fong Tsui
Keyword(s):  
East China Sea ◽  
East China ◽  
Kuroshio Intrusion ◽  
The East China Sea ◽  
China Sea ◽  
East China Sea Shelf ◽  
The Kuroshio

A structure of the Kuroshio and its related upwelling on the East China Sea shelf slope

1995 ◽  
Vol 51 (3) ◽  
pp. 267-278 ◽  
Author(s):  
Toshimichi Ito ◽  
Arata Kaneko ◽  
Hirohito Furukawa ◽  
Noriaki Gohda ◽  
Wataru Koterayama
Keyword(s):  
East China Sea ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
Shelf Slope ◽  
East China Sea Shelf ◽  
The Kuroshio

scholarly journals Variability of the nutrient stream near Kuroshio's origin

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chen-Tung Arthur Chen ◽  
Ting-Hsuan Huang ◽  
Chi-Hsuan Wu ◽  
Haiyan Yang ◽  
Xinyu Guo
Keyword(s):  
Pacific Ocean ◽  
Continental Shelf ◽  
East China Sea ◽  
Kuroshio Extension ◽  
Subsurface Water ◽  
East China ◽  
The East China Sea ◽  
High Productivity ◽  
China Sea ◽  
The Kuroshio

AbstractThe Kuroshio—literally “the Black Stream”—is the most substantial current in the Pacific Ocean. It was called the Black Stream because this oligotrophic current is so nutrient-poor in its euphotic zone that the water appears black without the influence of phytoplankton and the associated, often colored dissolved organic matter. Yet, below the euphotic layer, nutrient concentrations increase with depth while current speed declines. Consequently, a core of maximum nutrient flux, the so-called nutrient stream, develops at a depth of roughly between 200 and 800 m. This poorly studied nutrient stream transports nutrients to and supports high productivity and fisheries on the East China Sea continental shelf; it also transports nutrients to and promotes increased productivity and fisheries in the Kuroshio Extension and the subarctic Pacific Ocean. Three modes of the Kuroshio nutrient stream are detected off SE Taiwan for the first time: one has a single-core; one has two cores that are apparently separated by the ridge at 120.6–122° E, and one has two cores that are separated by a southward flow above the ridge. More importantly, northward nutrient transports seem to have been increasing since 2015 as a result of a 30% increase in subsurface water transport, which began in 2013. Such a nutrient stream supports the Kuroshio's high productivity, such as on the East China Sea continental shelf and in the Kuroshio Extension SE of Japan.

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