NDLI: Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009

Content Provider	Springer Nature Link
Author	Liu, Ze Hou, Yijun Xie, Qiang
Copyright Year	2015
Abstract	The formation of mesoscale eddies and the structure of the surface flow field in the Luzon Strait area were examined using in-situ CTD data, Argo float data, and multi-satellite remote sensing data collected from May to August 2009. The results show that vigorous water exchange between Kuroshio water and South China Sea (SCS) water began to emerge over the 200 m water column throughout the strait. Based on an objective definition of surface currents, float A69 tracked an anti-cyclonic eddy southwest of Taiwan Island under a Lagrangian current measurement. The salinity inside the anti-cyclonic eddy was higher than in typical SCS water but lower than in Kuroshio mainstream water, indicating that this eddy was induced by Kuroshio frontal intrusion through the Luzon Strait and into the SCS. From hydrographic data, we propose that continuous horizontal diffusion with high-salinity characteristics in the subsurface layer could extend to 119°E or even further west. The high-temperature filament, large positive sea level anomaly and clockwise geostrophic current all confirmed the existence of this warm eddy in May and June. A strongly negative wind stress curl maintained the eddy until it died. The surface flow field during July and August was rather complicated. Float A83 described an east-west orientated shuttle run in the 20°N section that was not reported by previous studies. At the same time, float A80 indicated a Kuroshio bend into the north-central region of Luzon Strait but it did not cross 120.5°E. The water mass rejoining the Kuroshio mainstream from the southern tip of Taiwan Island was less saline, indicating an entrainment of water from SCS by the Kuroshio bend.
Starting Page	1320
Ending Page	1333
Page Count	14
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	33
Issue Number	5
e-ISSN	19935005
Language	English
Publisher	Science Press
Publisher Date	2015-09-08
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	mesoscale eddy surface flow field hydrographic data Argo trajectory Argo profile Luzon Strait Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009

Water exchange and circulation structure near the Luzon Strait in early summer

Vertical structure and evolution of the Luzon Warm Eddy

Observation of material fluxes through the Luzon Strait

Characteristics of water exchange in the Luzon Strait during September 2006

Response of upper ocean currents to typhoons at two ADCP moorings west of the Luzon Strait

Path transition of the western boundary current with a gap due to mesoscale eddies: a 1.5-layer, wind-driven experiment

Numerical study on the interactions between the Kuroshio current in the Luzon Strait and a mesoscale eddy

Eddy Shedding from the Kuroshio Bend at Luzon Strait

Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009

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Eddy formation and surface flow field in the Luzon Strait area during the summer of 2009

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Response of upper ocean currents to typhoons at two ADCP moorings west of the Luzon Strait

Path transition of the western boundary current with a gap due to mesoscale eddies: a 1.5-layer, wind-driven experiment

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