{"NOAAStudyId":"1901","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":"1998-07-01","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-1901.xml","doi":null,"earliestYearBP":2,"earliestYearCE":1948,"entryId":"noaa-coral-1901","funding":[],"investigators":"Chakraborty, S.; Ramesh, R.","mostRecentYearBP":-39,"mostRecentYearCE":1989,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/1901","originalSource":null,"publication":[{"abstract":"The stable isotopic analyses (d18O and d13C) of a coral Favia speciosaspanning forty two years (1948-1989), collected from the Pirotan island(22.6 N, 70E) in the Gulf of Kutch have been carried out to assess its potential for retrieving past environmental changes in this region.  It is seen that the summer (minima) d18O variations in the coral CaCO3 are negatively correlated with seasonal (summer) monsoon rainfall in the adjoining region of Kutch and Saurashtra and a qualitative reconstructionof historical rainfall variations in this region can be obtained by analyzing the d18O in this species of coral.  The observed mean seasonal range of d18O variations is 0.34 +/- 0.17 per mil (n=42), whereas the expected range calculated (from available SST and measured d18O of seawater) is ~1.1 +/- 0.15 per mil.  The difference is due to the coarse resolution of sampling, which can be corrected.  The seasonal range ind13C is ~1 per mil and is explained by changes in: a) the light intensityrelated to the cloudiness during monsoons and b) phytoplankton productivity.","author":null,"citation":"Chakraborty, S., and R. Ramesh. 1998. Stable isotope variations in a coral (Favia speciosa) from the Gulf of Kutch during 1948-1989 AD: Environmental implications. Proceedings of the Indian Academy of Science (Earth and Planetary Sciences) 107(4):331-341.","edition":null,"identifier":null,"issue":null,"journal":"Proceedings of the Indian Academy of Sciences","pages":null,"pubRank":"1","pubYear":1998,"reportNumber":null,"title":"Stable isotope variations in a coral (Favia speciosa) from the Gulf of Kutch during 1948-1989 AD: Environmental implications","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"1950","geo":{"geoType":"Feature","geometry":{"coordinates":["22.6","70"],"type":"POINT"},"properties":{"easternmostLongitude":"70","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"22.6","southernmostLatitude":"22.6","westernmostLongitude":"70"}},"locationName":"Continent>Asia>Southcentral Asia>India","mappable":"Y","paleoData":[{"NOAADataTableId":"2012","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/indian_ocean/pirotan1998.txt","linkText":"pirotan1998.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>Dipsastraea sp.>Dipsastraea speciosa","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Dipsastraea sp.>Dipsastraea speciosa","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]}],"dataTableName":"Pirotan Island Core 001","dataTableNotes":null,"earliestYear":1948,"earliestYearBP":2,"earliestYearCE":1948,"mostRecentYear":1989,"mostRecentYearBP":-39,"mostRecentYearCE":1989,"species":[],"timeUnit":"AD"}],"siteName":"Pirotan Island"}],"studyCode":null,"studyName":"Pirotan Island - Stable Isotope Data","studyNotes":null,"version":"1.0","xmlId":"1149"}