@article{fdi:010081498,
  title = {{O}xygen minimum zone variability during the last 700 years in a coastal upwelling area of the {H}umboldt system ({M}ejillones, 23° {S}, {C}hile). {A} new approach from geochemical signature},
  author = {{V}aldes, {J}. and {S}ifeddine, {A}bdelfettah and {G}uinez, {M}. and {C}astillo, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}ejillones bay presents a permanent and shallow {OMZ}, whose upper boundary fluctuates between 30 m and 60 m water depth during a normal year. {U}nder this condition, the bottom sediments preserve a geochemical signature of the past oceanic variability. {P}articularly, biological productivity and bottom dissolved oxygen can be reconstructed using 13{C}, 15{N} and trace elements metals measured along sediment cores. {T}race elements like {V}, {N}i, {M}o and {U} preserved in surface sediment of {M}ejillones bay as a consequence of poorly oxygenated bottom waters, were used to develop a statistical model that allowed the reconstruction of the bottom water dissolved oxygen variability during the last 700 years. {D}uring these seven centuries, the marine sediments of {M}ejillones recorded three ocean-climatic periods. {F}rom 1350 to 1500 {CE} the bay was dominated by a strong and shallower {OMZ}, intense denitrification, but a low productivity and flux of biodetritus. {B}ottom waters recorded oxygen values around a mean of 3.52 mu},
  keywords = {{R}edox-sensitive metals ; {P}aleoxygenation ; {P}aleoproductivity ; {H}umboldt current ; {M}ejillones bay ; {C}hile ; {CHILI} ; {HUMBOLDT} {COURANT} ; {MEJILLONES} {BAIE}},
  booktitle = {},
  journal = {{P}rogress in {O}ceanography},
  volume = {193},
  numero = {},
  pages = {102520 [12 ]},
  ISSN = {0079-6611},
  year = {2021},
  DOI = {10.1016/j.pocean.2021.102520},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081498},
}