Cocos (Keeling) Islands - Radiocarbon Data Hua, Q.; Woodroffe, C.D.; Smithers, S.G.; Barbetti, M.; Fink, D. Hua, Q. Woodroffe, C.D. Smithers, S.G. Barbetti, M. Fink, D. earth science/paleoclimate/corals and sclerosponges (sample identification,null,null,null,null,corals and sclerosponges,null,null,C,null) earth science/paleoclimate/corals and sclerosponges (age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges (Delta 14C,Porites sp.,one standard deviation,per mil NBS oxalic acid,null,corals and sclerosponges,raw,accelerator mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (Delta 14C,Porites sp.,null,per mil NBS oxalic acid,null,corals and sclerosponges,raw,accelerator mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (Cocos (Keeling) Islands>LATITUDE -12.07>LONGITUDE 96.82) Annual bands of a Porites coral from the Cocos (Keeling) Islands, eastern Indian Ocean, were analysed by radiocarbon for 1955-1985 AD. A rapid oceanic response of the site to bomb 14C is found, with a maximum D14C value of 132 per mil in 1975. This value is considerably higher than those for the northwestern Indian Ocean, suggesting that surface waters reaching Cocos are not derived from the Arabian Sea. Instead, D14C values for Cocos and those for Watamu (Kenya) agree well over most of the study interval, suggesting that the South Equatorial Current carries 14C-elevated water rather than 14C-depleted water westward across the Indian Ocean. This implies that oceanic upwelling in the northwestern Indian Ocean is spatially confined with little contribution to the upper limb of the global thermohaline circulation. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Hua, Q. Investigator : Woodroffe, C.D. Investigator : Smithers, S.G. Investigator : Barbetti, M. Investigator : Fink, D. 2005-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/1923 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/hua2005_noaa.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/hua2005_noaa.txt English https://www.ncdc.noaa.gov/paleo/study/1923 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/hua2005_noaa.txt Hua, Q., C.D. Woodroffe, S.G. Smithers, M. Barbetti, and D. Fink. 2005. Radiocarbon in corals from the Cocos (Keeling) Islands and implications for Indian Ocean circulation. Geophys. Res. Lett., v.32, L21602. START YEAR: 1955 AD * END YEAR: 1985 AD 96.82 -12.07 96.82 -12.07