@article{fdi:010085030,
  title = {{P}hysical speciation of iron in the {A}tlantic sector of the {S}outhern {O}cean along a transect from the subtropical domain to the {W}eddell {S}ea {G}yre},
  author = {{C}hever, {F}. and {B}ucciarelli, {E}. and {S}arthou, {G}. and {S}peich, {S}. and {A}rhan, {M}. and {P}enven, {P}ierrick and {T}agliabue, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{D}istributions of total dissolvable iron ({TDF}e; unfiltered), dissolved iron ({DF}e; 0.2 mu m filtered), and soluble iron ({SF}e; 0.02 mu m filtered) were investigated during the {BONUS}-{G}ood{H}ope cruise in the {A}tlantic sector of the {S}outhern {O}cean (34 degrees {S}/17 degrees {E}-57 degrees {S}/0 degrees, {F}ebruary-{M}arch 2008). {I}n the mixed layer, mean values of 0.43 +/- 0.28 and 0.22 +/- 0.18 nmol {L}-1 were measured for {TDF}e and {DF}e, respectively. {I}n deeper waters, {TDF}e and {DF}e concentrations were 1.07 +/- 0.68 and 0.52 +/- 0.30 nmol {L}-1, respectively. {DF}e concentrations decreased from the north (subtropical waters) to the south ({W}eddell {S}ea {G}yre). {I}n the subtropical domain, dusts coming from {P}atagonia and southern {A}frica and inputs from the {A}frican continental margin may explain high {DF}e and {TDF}e concentrations in surface and intermediate waters. {R}esults from numerical models gave support to these hypotheses. {I}n the {A}ntarctic {C}ircumpolar {C}urrent domain, estimation of the median advective time of water masses suggests that sediment inputs from the {A}ntarctic {P}eninsula, {S}outh {A}merica margin, and/or {S}outh {G}eorgia {I}slands could be an important source of {F}e. {E}xcept in the subtropical domain where 0.4-0.6 nmol {L}-1 of {SF}e were observed in the upper 1500 m, all stations exhibited values close to 0.1-0.2 nmol {L}-1 in surface and 0.3-0.5 nmol {L}-1 in deeper waters. {F}or all stations, colloidal {F}e ({CF}e) was a minor fraction of {DF}e in surface waters and increased with depth. {C}olloidal aggregation, sinking of {CF}e, and assimilation of {SF}e, followed by rapid exchange between the two fractions, are suspected to occur.},
  keywords = {antarctic circumpolar current ; different size fractions ; dissolved ; iron ; thalassiosira-oceanica ; siderophore production ; enrichment ; experiment ; phytoplankton bloom ; kerguelen-islands ; surface waters ; north-atlantic ; {KERGUELEN} ; {ATLANTIQUE} {NORD}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch. {O}ceans},
  volume = {115},
  numero = {},
  pages = {{C}10059},
  ISSN = {0148-0227},
  year = {2010},
  DOI = {10.1029/2009jc005880},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085030},
}