DOI: 10.1002/2015GL063120
论文题名: Dynamical processes within an anticyclonic eddy revealed from Argo floats
作者: Zhang W.-Z. ; Xue H. ; Chai F. ; Ni Q.
刊名: Geophysical Research Letters
ISSN: 0094-8803
EISSN: 1944-8534
出版年: 2015
卷: 42, 期: 7 起始页码: 2342
结束页码: 2350
语种: 英语
英文关键词: anticyclonic eddy
; Argo floats
; dynamical processes
; South China Sea
Scopus关键词: Wind effects
; Anticyclonic eddies
; Argo float
; Biomass distribution
; Dynamical mechanisms
; Dynamical process
; Radial displacements
; South China sea
; Vertical fluctuations
; Nutrients
; anticyclone
; downwelling
; eddy
; mesoscale eddy
; mixed layer
; phytoplankton
; water depth
; wind field
英文摘要: Mesoscale eddies play a significant role in supplying the nutrients required for phytoplankton blooms and redistributing biomass in the ocean. However, how eddies influence nutrient flux and biomass distribution remains unclear. Here we reveal two important dynamical processes (radial displacement and vertical fluctuations) within an anticyclonic eddy by analyzing observations from Argo floats. The Argo floats in the eddy were displaced toward the eddy edge due to the imbalance of radial momentum. Vertical fluctuations below the mixed layer resulted in alternating upwelling and downwelling in the inner and outer parts of the eddy. High salinity deep water was uplifted tens of meters by the upwelling and further extended to the surface with the aid of wind effects. Vertical motions associated with the fluctuations penetrated to the depths of several hundred meters. These processes represent crucial dynamical mechanisms for the motion of particles in mature anticyclonic eddies. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928707049&doi=10.1002%2f2015GL063120&partnerID=40&md5=c4aabcf8e359af14f63a6c72086b047c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8419
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
Recommended Citation:
Zhang W.-Z.,Xue H.,Chai F.,et al. Dynamical processes within an anticyclonic eddy revealed from Argo floats[J]. Geophysical Research Letters,2015-01-01,42(7).