{"NOAAStudyId":"1923","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2005-07-01","dataPublisher":"NOAA","dataType":"CORALS AND SCLEROSPONGES","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/coral-sclerosponge","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-coral-1923.xml","doi":null,"earliestYearBP":-5,"earliestYearCE":1955,"entryId":"noaa-coral-1923","funding":[],"investigators":"Hua, Q.; Woodroffe, C.D.; Smithers, S.G.; Barbetti, M.; Fink, D.","mostRecentYearBP":-35,"mostRecentYearCE":1985,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/1923","originalSource":null,"publication":[{"abstract":"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.","author":null,"citation":"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.","edition":null,"identifier":null,"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2005,"reportNumber":null,"title":"Radiocarbon in corals from the Cocos (Keeling) Islands and implications for Indian Ocean circulation","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"1978","geo":{"geoType":"Feature","geometry":{"coordinates":["-12.07","96.82"],"type":"POINT"},"properties":{"easternmostLongitude":"96.82","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"-12.07","southernmostLatitude":"-12.07","westernmostLongitude":"96.82"}},"locationName":"Continent>Australia/New Zealand>Australia","mappable":"Y","paleoData":[{"NOAADataTableId":"2059","coreLengthMeters":0,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>corals and sclerosponges>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/hua2005_noaa.txt","linkText":"hua2005_noaa.txt","urlDescription":"Coral","variables":[{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>sample identification"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Porites sp.","cvMethod":"accelerator mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil NBS oxalic acid","cvWhat":"chemical composition>isotope>isotope ratio>Delta 14C"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Porites sp.","cvMethod":"accelerator mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil NBS oxalic acid","cvWhat":"chemical composition>isotope>isotope ratio>Delta 14C"}]}],"dataTableName":"PP30","dataTableNotes":null,"earliestYear":1955,"earliestYearBP":-5,"earliestYearCE":1955,"mostRecentYear":1985,"mostRecentYearBP":-35,"mostRecentYearCE":1985,"species":[],"timeUnit":"AD"}],"siteName":"Cocos (Keeling) Islands"}],"studyCode":null,"studyName":"Cocos (Keeling) Islands - Radiocarbon Data","studyNotes":null,"version":"1.0","xmlId":"1242"}