DOI: 10.1002/grl.50613
论文题名: Observations of vertical turbulent nitrate flux across the Kuroshio
作者: Kaneko H. ; Yasuda I. ; Komatsu K. ; Itoh S.
刊名: Geophysical Research Letters
ISSN: 0094-8867
EISSN: 1944-8598
出版年: 2013
卷: 40, 期: 12 起始页码: 3123
结束页码: 3127
语种: 英语
英文关键词: Front
; Kuroshio
; Turbulent mixing
; Vertical nitrate flux
Scopus关键词: Chlorophyll-a concentration
; Front
; Kuroshio
; Nitrate concentration
; Nitrate fluxes
; Turbulence measurements
; Turbulent mixing
; Vertical diffusivity
; Chlorophyll
; Ocean currents
; Turbulence
; Nitrates
; chlorophyll a
; diffusivity
; euphotic zone
; nitrate
; turbulent mixing
; vertical mixing
; Kuroshio Current
; Pacific Ocean
英文摘要: The vertical turbulent nitrate flux was calculated across the Kuroshio based on direct turbulence measurements and nitrate concentrations. Profile data were analyzed relative to the main axis of the Kuroshio front, the location of maximum surface velocity. Large upward nitrate flux on the northern side of the front, O(10-6) mmol N m-2 s-1, was observed from 300 m up to the base of the euphotic layer. Enhanced turbulence and a large vertical nitrate gradient contributed to this flux. On this side, high concentrations of chlorophyll-a were also observed near the surface, and the large nitrate flux is consistent with a previous estimate of the rate of new production. In contrast, south of the axis, the nitrate flux was O(10 -8-10-7) mmol N m-2 s-1 because of the small vertical nitrate gradient, although vertical diffusivity at the euphotic layer base remained relatively high. Key Points Evaluation of turbulent nitrate flux in the Kuroshio via in-situ measurements Markedly elevated upward nitrate flux on the northern side of the Kuroshio Relationship between turbulent nitrate flux and chlorophyll-a concentration ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880569337&doi=10.1002%2fgrl.50613&partnerID=40&md5=638aeb8bfbfada76607e4e72a8bf60be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6131
Appears in Collections: 气候减缓与适应
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作者单位: Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8564, Japan
Recommended Citation:
Kaneko H.,Yasuda I.,Komatsu K.,et al. Observations of vertical turbulent nitrate flux across the Kuroshio[J]. Geophysical Research Letters,2013-01-01,40(12).