St. Gilles Reef - Oxygen Isotope Data Pfeiffer, M.; Timm, O.; Dullo, W.-C.; Podlech, S. Pfeiffer, M. Timm, O. Dullo, W.-C. Podlech, S. PAGES 2k Network PAGES Australasia 2k earth science/paleoclimate/corals and sclerosponges (age,null,null,null,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges (delta 18O,Porites sp.,null,per mil VPDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (St. Gilles Reef>LATITUDE -21.03>LONGITUDE 55.25) We have developed a new 163-year bimonthly coral d18O record from La R�union (55�E, 21�S). Interannual variations in coral d18O are coherent with the Southern Oscillation Index but not with regional sea surface temperature (SST). Correlations with the global SST field suggest more negative seawater d18O (d18Osw) during La Ni�a years. We propose that the signal results from changes in the strength of the South Equatorial Current and the Indonesian throughflow, which carry low salinity water. Multidecadal variations in coral d18O are coherent with regional SST, but the sign is of opposite sense as expected from the coral d18O-temperature relationship. This requires multidecadal changes in salinity large enough to overprint the SST contribution in the coral d18O record. Our results suggest that multidecadal salinity variations result from modulations in the transport of the South Equatorial Current, which varies in response to the surface wind field and/or the Indonesian throughflow. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Pfeiffer, M. Investigator : Timm, O. Investigator : Dullo, W.-C. Investigator : Podlech, S. 2004-11-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/1890 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/pfeiffer2004_noaa.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/pfeiffer2004_noaa.txt English https://www.ncdc.noaa.gov/paleo/study/1890 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/pfeiffer2004_noaa.txt Pfeiffer, M.; Timm, O.; Dullo, W.C.; Podlech, S2004Oceanic forcing of interannual and multidecadal climate variability in the southwestern Indian Ocean: Evidence from a 160 year coral isotopic record (La R�union, 55E, 21S)Paleoceanography1910.1029/2003PA000964 START YEAR: 1832 AD * END YEAR: 1995 AD 55.25 -21.03 55.25 -21.03