@article{fdi:010062691,
  title = {{I}ron sources and dissolved-particulate interactions in the seawater of the {W}estern {E}quatorial {P}acific, iron isotope perspectives},
  author = {{L}abatut, {M}. and {L}acan, {F}. and {P}radoux, {C}. and {C}hmeleff, {J}. and {R}adic, {A}. and {M}urray, {J}. {W}. and {P}oitrasson, {F}ranck and {J}ohansen, {A}. {M}. and {T}hil, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his work presents iron isotope data in the western equatorial {P}acific. {M}arine aerosols and top core margin sediments display a slightly heavy {F}e isotopic composition ({F}e-56) of 0.330.11 (2{SD}) and 0.140.07, respectively. {S}amples reflecting the influence of {P}apua {N}ew {G}uinea runoff ({S}epik {R}iver and {R}abaul volcano water) are characterized by crustal values. {I}n seawater, {F}e is mainly supplied in the particulate form and is found with a {F}e-56 between -0.49 and 0.34 +/- 0.07 parts per thousand. {T}he particulate {F}e seems to be brought mainly by runoff and transported across continental shelves and slopes. {A}erosols are suspected to enrich the surface {V}itiaz {S}trait waters, while hydrothermal activity likely enriched {N}ew {I}reland waters. {D}issolved {F}e isotopic ratios are found between -0.03 and 0.53 +/- 0.07 parts per thousand. {T}hey are almost systematically heavier than the corresponding particulate {F}e, and the difference between the signature of both phases is similar for most samples with {F}e-56({DF}e-{PF}e)=+0.27 +/- 0.25 parts per thousand (2{SD}). {T}his is interpreted as an equilibrium isotopic fractionation revealing exchange fluxes between both phases. {T}he dissolved phase being heavier than the particles suggests that the exchanges result in a net nonreductive release of dissolved {F}e. {T}his process seems to be locally significantly more intense than {F}e reductive dissolution documented along reducing margins. {I}t may therefore constitute a very significant iron source to the ocean, thereby influencing the actual estimation of the iron residence time and sinks. {T}he underlying processes could also apply to other elements.},
  keywords = {iron isotopes ; particles ; equatorial {P}acific ; {P}apua {N}ew {G}uinea ; seawater ; {GEOTRACES} ; {PACIFIQUE} {OUEST} ; {ZONE} {EQUATORIALE} ; {PAPOUASIE} {NOUVELLE} {GUINEE}},
  booktitle = {},
  journal = {{G}lobal {B}iogeochemical {C}ycles},
  volume = {28},
  numero = {10},
  pages = {1044--1065},
  ISSN = {0886-6236},
  year = {2014},
  DOI = {10.1002/2014gb004928},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062691},
}