Deep dissolved iron profiles in the eastern North Atlantic in relation to water masses -: art. no. 1902

被引:39
作者
Laës, A
Blain, S
Laan, P
Achterberg, EP
Sarthou, G
de Baar, HJW
机构
[1] Inst Univ Europeen Mer, Lab Sci Environm Marin, Plouzane, France
[2] Netherlands Inst Sea Res, Dept Marine Chem & Geol, Texel, Netherlands
[3] Univ Plymouth, Dept Environm Sci, Plymouth PL4 8AA, Devon, England
关键词
D O I
10.1029/2003GL017902
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
[1] Concentrations of dissolved iron (DFe, 0.2mum) were determined at two stations in the Biscay Abyssal Plain ( North East Atlantic) in March 2002. DFe concentrations in the surface layer (0.23-0.34 nM) were typical of winter conditions in this area. At 1000 m, DFe concentrations increased to 0.62-0.86 nM. This feature is consistent with the production of DFe by remineralization of the biogenic material. However, at this depth, Mediterranean Outflow Water ( MOW) could be an additional source of DFe. Below 2500 m, DFe concentrations were constant (0.75 +/- 0.04 nM). An interesting feature of the profiles was the intermediate maximum of DFe (1.19-1.12 nM) around 2000 m, associated with the Labrador Sea Water (LSW). We suggest that the iron enrichment of LSW occurred when this water mass reached the continental margin, likely in the vicinity of the Goban plateau. Vertical distributions were highly dependent on water masses encountered.
引用
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页码:OCE8 / 1
页数:4
相关论文
共 23 条
  • [1] Horizontal gradient of the chemical speciation of iron in surface waters of the northeast Atlantic Ocean
    Boye, M
    Aldrich, AP
    van den Berg, CMG
    de Jong, JTM
    Veldhuis, M
    de Baar, HJW
    [J]. MARINE CHEMISTRY, 2003, 80 (2-3) : 129 - 143
  • [2] Boyle E, 1997, MAR CHEM, V57, P163, DOI 10.1016/S0304-4203(97)00044-3
  • [3] REACTIVE TRACE-METALS IN THE STRATIFIED CENTRAL NORTH PACIFIC
    BRULAND, KW
    ORIANS, KJ
    COWEN, JP
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 1994, 58 (15) : 3171 - 3182
  • [4] Trace metal (Cd, Cu, Ni and Pb) cycling in the upper water column near the shelf edge of the European continental margin (Celtic Sea)
    Cotté-Krief, MH
    Thomas, AJ
    Martin, JM
    [J]. MARINE CHEMISTRY, 2002, 79 (01) : 1 - 26
  • [5] Shipboard techniques based on flow injection analysis for measuring dissolved Fe, Mn and Al in seawater
    de Jong, JTM
    Boye, M
    Schoemann, VF
    Nolting, RF
    de Baar, HJW
    [J]. JOURNAL OF ENVIRONMENTAL MONITORING, 2000, 2 (05): : 496 - 502
  • [6] IMPORTANCE OF IRON FOR PLANKTON BLOOMS AND CARBON-DIOXIDE DRAWDOWN IN THE SOUTHERN-OCEAN
    DEBAAR, HJW
    DEJONG, JTM
    BAKKER, DCE
    LOSCHER, BM
    VETH, C
    BATHMANN, U
    SMETACEK, V
    [J]. NATURE, 1995, 373 (6513) : 412 - 415
  • [7] Impact of high Saharan dust inputs on dissolved iron concentrations in the Mediterranean Sea
    Guieu, C
    Bozec, Y
    Blain, S
    Ridame, C
    Sarthou, G
    Leblond, N
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2002, 29 (19)
  • [8] What controls dissolved iron concentrations in the world ocean? Authors' closing comments
    Johnson, KS
    Gordon, RM
    Coale, KH
    [J]. MARINE CHEMISTRY, 1997, 57 (3-4) : 181 - 186
  • [9] Johnson KS, 1997, MAR CHEM, V57, P137, DOI 10.1016/S0304-4203(97)00043-1
  • [10] Iron in the western Pacific: a riverine or hydrothermal source for iron in the Equatorial Undercurrent?
    Mackey, DJ
    O'Sullivan, JE
    Watson, RJ
    [J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS, 2002, 49 (05) : 877 - 893