Ourbak Timothée auteur aut IRD Corrège Thierry auteur aut IRD Malaizé B. auteur aut IRD Le Cornec Florence auteur aut IRD Charlier K. auteur aut IRD Peypouquet J. P. auteur aut IRD text journalArticle eng We present a high-resolution study of five geochemical components of a New Caledonia coral core. Minor and trace elements (Sr/Ca, U/Ca, Mg/Ca, Ba/Ca), together with oxygen isotopes (delta O-18), were investigated at near-fortnightly resolution. Geochemical measurements were compared to sea surface temperature (SSTTSG) and salinity (SSSTSG) recorded by a thermosalinograph (TSG) located less than 10 m from the coral. Results show that Sr/Ca, Mg/Ca, and delta O-18 are temperature-dependent ( correlation coefficient to local SSTTSG between 0.74 and 0.84). Their robustness as SST tracers is tested against a satellite-based data set for a 4 year validation period. U/Ca has a more complex behavior and appears to be linked to both SSTTSG and SSSTSG, despite relatively small local SSS variations. For the first time this salinity-related imprint is quantified in a U/Ca coralline ratio. In addition to SST and SSS tracers, Ba/Ca measurements provide a possible way to investigate upwelling activity occurrences. specialized corals geochemical tracers calibration sea surface salinity upwelling climate and interannual variability paleoceanography : corals paleoceanography : geochemical tracers paleoceanography : sea surface temperature 7 NIL_95-NIL_107 2006 1525-2027 https://www.documentation.ird.fr/hor/PAR00000890 10.1029/2005GC001064 1525-2027 https://www.documentation.ird.fr/hor/PAR00000890 IRD - Base Horizon / Pleins textes 2006-05-30 2017-08-23 PAR00000890 fre