GEOTRACES – An international study of the global marine biogeochemical cycles of trace elements and their isotopes

doi:10.1016/j.chemer.2007.02.001

Cited by 164 publications

(58 citation statements)

References 131 publications

(149 reference statements)

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“…ISOW also fills the deep areas of the Irminger and Labrador Seas, with concentrations greater than 50 %. This distribution of ISOW is consistent with its circulation from the Iceland-Scotland sills, across the Iceland Basin along the eastern flank of the Reykjanes Ridge, crossing the Charlie-Gibbs Fracture Zone (CGFZ) (Dickson and Brown, 1994;Saunders, 2001), flowing cyclonically in the Irminger Sea and joining the DWBC (e.g. Price and Baringer, 1994;Rudels et al, 2002;Tanhua et al, 2008), and then flowing cyclonically in the Labrador Sea (Xu et al, 2010).…”

Section: Water Mass Distribution For 2014mentioning

confidence: 64%

Water mass distributions and transports for the 2014 GEOVIDE cruise in the North Atlantic

et al. 2018

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Abstract. We present the distribution of water masses along the GEOTRACES-GA01 section during the GEO-VIDE cruise, which crossed the subpolar North Atlantic Ocean and the Labrador Sea in the summer of 2014. The water mass structure resulting from an extended optimum multiparameter (eOMP) analysis provides the framework for interpreting the observed distributions of trace elements and their isotopes. Central Waters and Subpolar Mode Waters (SPMW) dominated the upper part of the GEOTRACES-GA01 section. At intermediate depths, the dominant water mass was Labrador Sea Water, while the deep parts of the section were filled by Iceland-Scotland Overflow Water (ISOW) and North-East Atlantic Deep Water. We also evaluate the water mass volume transports across the 2014 OVIDE line (Portugal to Greenland section) by combining the water mass fractions resulting from the eOMP analysis with the absolute geostrophic velocity field estimated through a box inverse model. This allowed us to assess the relative contribution of each water mass to the transport across the section. Finally, we discuss the changes in the distribution and transport of water masses between the 2014 OVIDE line and the 2002-2010 mean state. At the upper and intermediate water levels, colder end-members of the water masses replaced the warmer ones in 2014 with respect to

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Section: Water Mass Distribution For 2014mentioning

confidence: 64%

Water mass distributions and transports for the 2014 GEOVIDE cruise in the North Atlantic

et al. 2018

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“…The international GEOTRACES programme is producing unprecedented measurements of multiple trace elements at full oceanic depth across ocean-basin to global scales [20,59,60]. Public release of these data in the form of the consistent quality-controlled [61] GEOTRACES IDP2014 [20] has provided a hugely valuable community resource which promises to revolutionize our understanding of the sources, sinks and cycling of trace elements, alongside their interactions with oceanic microbial systems and wider biogeochemical cycles.…”

Section: Methodsmentioning

confidence: 99%

Diagnosing oceanic nutrient deficiency

Moore¹

2016

Phil. Trans. R. Soc. A.

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“…Trace metals serve important roles as regulators of ocean processes, including marine ecosystem dynamics and global carbon cycling (Henderson et al 2007). Consequently, identifying biogeochemical processes that regulate internal cycling of trace metals and quantifying their rates and fluxes in marine water columns are vital to establishing the roles they play as regulators and recorders of ocean processes (Anderson and Henderson 2005).…”

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confidence: 99%

Trace metal cycling in the surface water of the South China Sea: Vertical fluxes, composition, and sources

Chou

Wei

et al. 2010

Limnology & Oceanography

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We deployed floating traps in the surface waters of the South China Sea on four occasions at depths of 30 m, 100 m, and 160 m from 2006 to 2007 to quantify vertical metal fluxes in the surface water and examine trace metal composition in the sinking particles to investigate their sources. The elements determined include 13 trace metals and 8 major elements. The fluxes for most of the bioactive elements at 30 m varied markedly during different seasons and strongly co-varied with organic matter production, but the fluxes at 160 m were low and consistent under different seasons, showing that most of the elements were internally recycled in the surface water during productive seasons. Most of the bioactive trace metals in sinking particles were correlated with biogenic P, and their P-normalized quotas were also strongly associated with lithogenic Al. The ratios of metals to Al and P for most of the bioactive trace metals were significantly higher than the ratios in lithogenic particles and than intracellular quotas in plankton, respectively, indicating that the trace metals in the sinking particles were abiogenic, nonlithogenic, and adsorbed on biogenic particles. The comparable fluxes between aeolian deposition and the sinking particles in the mixed layer demonstrate that the highly enriched trace metals in the sinking particles were attributed to input from anthropogenic aerosols. The coupling and transport of anthropogenic trace metals with biogenic particles in oceanic surface waters may be an important mechanism for trace metal cycling in global oceans.Trace metals serve important roles as regulators of ocean processes, including marine ecosystem dynamics and global carbon cycling (Henderson et al. 2007). Consequently, identifying biogeochemical processes that regulate internal cycling of trace metals and quantifying their rates and fluxes in marine water columns are vital to establishing the roles they play as regulators and recorders of ocean processes (Anderson and Henderson 2005). Biogenic particles generated in oceanic surface water are one of the most important forcings regulating the internal cycling of trace metals in marine water columns (Turekian 1977;Whitfield and Turner 1987;Kuss and Kremling 1999). The particles interact with both dissolved and particulate bioactive trace metals through processes like active biological uptake or passive adsorption. In particular, large biogenic particles, mostly composed of detritus and hard parts of sizable phytoplankton and zooplankton and fecal pallets of zooplankton, serve as the predominant components of sinking particles in oceanic surface waters (Bruland 1983;Fowler and Knauer 1986;Alldredge and Jackson 1995). These particles become dominant agents in transporting major and trace elements from oceanic surface waters to deep waters. In addition, particle fluxes regulate the concentrations and availability of trace metals in oceanic water columns. Thus, the elemental composition of marine plankton and sinking particles, and the fluxes of sinking partic...

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GEOTRACES – An international study of the global marine biogeochemical cycles of trace elements and their isotopes

Cited by 164 publications

References 131 publications

Water mass distributions and transports for the 2014 GEOVIDE cruise in the North Atlantic

Water mass distributions and transports for the 2014 GEOVIDE cruise in the North Atlantic

Diagnosing oceanic nutrient deficiency

Trace metal cycling in the surface water of the South China Sea: Vertical fluxes, composition, and sources

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