{"NOAAStudyId":"1899","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":"2004-07-01","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-1899.xml","doi":null,"earliestYearBP":-41,"earliestYearCE":1991,"entryId":"noaa-coral-1899","funding":[],"investigators":"Morimoto, M.; Kitagawa, H.; Shibata, Y.; Kayanne, H.","mostRecentYearBP":-48,"mostRecentYearCE":1998,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/1899","originalSource":null,"publication":[{"abstract":"A coral radiocarbon (D14C) investigation with a high time-resolution is crucial for reconstructing secular and seasonal D14C changes in the surface seawater, which potentially reflect ocean circulations and dynamic ocean-atmosphere interactions. The D14C values of a modern coral (Porites sp.) from Kikai Island, southern Japan, in the subtropical Northwestern Pacific, were determined for the period of 1991-1998 at a monthly resolution. A coral D14C time series for the 8 yr indicated seasonal cycles superimposed on a secular decreasing trend of 3.8 per mil.per yr. The seasonal amplitude of the coral D14C was about 18 per mil on the average, and minimum D14C was observed in late spring and summer. The D14C changes were tentatively explained by horizontal oceanic advections around Kikai Island or over the wide range of the equatorial and subequatorial Pacific.","author":null,"citation":"Morimoto, M., H. Kitagawa, Y. Shibata, and H. Kayanne. 2004. Seasonal radiocarbon variation of surface seawater recorded in a coral from Kikai Island, subtropical Northwestern Pacific. Radiocarbon 46(2):643-648.","edition":null,"identifier":null,"issue":null,"journal":"Radiocarbon","pages":null,"pubRank":"1","pubYear":2004,"reportNumber":null,"title":"Seasonal radiocarbon variation of surface seawater recorded in a coral from Kikai Island, subtropical Northwestern Pacific","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"1947","geo":{"geoType":"Feature","geometry":{"coordinates":["28.28","129.93"],"type":"POINT"},"properties":{"easternmostLongitude":"129.93","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"28.28","southernmostLatitude":"28.28","westernmostLongitude":"129.93"}},"locationName":"Continent>Asia>Eastern Asia>Japan","mappable":"Y","paleoData":[{"NOAADataTableId":"2009","coreLengthMeters":0,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>corals and sclerosponges>carbon isotopes","earth science>paleoclimate>corals and sclerosponges>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/kikai2004.txt","linkText":"kikai2004.txt","urlDescription":"Coral","variables":[{"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":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Porites sp.","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Kikai Island Core 001","dataTableNotes":null,"earliestYear":1991,"earliestYearBP":-41,"earliestYearCE":1991,"mostRecentYear":1998,"mostRecentYearBP":-48,"mostRecentYearCE":1998,"species":[],"timeUnit":"AD"}],"siteName":"Kikai Island"}],"studyCode":null,"studyName":"Kikai Island - Radiocarbon and Oxygen Isotope Data","studyNotes":null,"version":"1.0","xmlId":"1147"}