globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116496
论文题名:
Rare earth element input and transport in the near-surface zonal current system of the Tropical Western Pacific
作者: Behrens M.K.; Pahnke K.; Cravatte S.; Marin F.; Jeandel C.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 549
语种: 英语
中文关键词: GEOTRACES ; rare earth elements ; zonal current system
英文关键词: Electronic guidance systems ; Exploratory geochemistry ; Rare earth elements ; Rare earths ; Seawater ; Tropics ; Volcanic rocks ; Current transport ; Current velocity ; Geochemical composition ; Lateral transport ; Papua New Guinea ; Temporal and spatial variability ; Tropical Western Pacific ; Westward current ; Trace elements ; concentration (composition) ; dissolved matter ; mixing ; rare earth element ; source apportionment ; spatiotemporal analysis ; trace element ; zonal flow ; Pacific Ocean ; Pacific Ocean (Tropical)
英文摘要: Continental sources and current transport play a major role in rare earth element (REE, and other trace element) input and distribution in the Tropical Western Pacific. Here, we present spatially highly resolved distributions of dissolved REE concentrations ([REE]) along three transects in the zonal (extra-)equatorial current system and the Solomon Strait of the Tropical Western Pacific. We use seawater [REE] in combination with direct physical oceanographic observations (e.g., current velocity data) to characterize the geochemical composition, origin and pathways of the complex surface and upper layer currents of the Tropical Western Pacific and to quantify the input fluxes of REEs. We identify Papua New Guinea (PNG) volcanic rocks, sediments, and/or river particles as the key source adding trace elements to the equatorial eastward zonal currents of the Tropical Western Pacific. Our and published data indicate temporal and spatial variability of this input and transport in the PNG source area and the equatorial eastward currents. The westward currents, on the other hand, lack this REE input signal suggesting lateral transport of preformed seawater [REE]. At the transition between these zonal eastward and westward currents, our data indicate lateral mixing of Eastern and Western Pacific source waters. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164861
Appears in Collections:气候变化与战略

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作者单位: Marine Isotope Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, Oldenburg, 26129, Germany; LEGOS, Université de Toulouse, (IRD, CNES, CNRS, UPS), Toulouse, France

Recommended Citation:
Behrens M.K.,Pahnke K.,Cravatte S.,et al. Rare earth element input and transport in the near-surface zonal current system of the Tropical Western Pacific[J]. Earth and Planetary Science Letters,2020-01-01,549
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