{"NOAAStudyId":"22643","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":"2017-09-07","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-22643.xml","doi":null,"earliestYearBP":129000,"earliestYearCE":-127050,"entryId":"noaa-coral-22643","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"1155495"}],"investigators":"Dutton, A.L.; Webster, J.M.; Zwartz, D.; Lambeck, K.; Wohlfarth, B.","mostRecentYearBP":123000,"mostRecentYearCE":-121050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22643","originalSource":null,"publication":[{"abstract":"In the search for a record of eustatic sea level change on glacial–interglacial timescales, the Seychelles ranks as one of the best places on the planet to study. Owing to its location with respect to the former margins of Northern Hemisphere ice sheets that wax and wane on orbital cycles, the local—or relative—sea level history is predicted to lie within a few meters of the globally averaged eustatic signal during the Last Interglacial period. We have surveyed and dated Last Interglacial fossil corals to ascertain peak sea level and hence infer maximum retreat of polar ice sheets during this time interval. We observe a pattern of gradually rising sea level in the Seychelles between ~129 and 125 thousand years ago (ka), with peak eustatic sea level attained after 125 ka at 7.6 ± 1.7 m higher than present. After accounting for thermal expansion and loss of mountain glaciers, this sea-level budget would require ~5–8 m of polar ice sheet contribution, relative to today's volume, of which only ~2 m came from the Greenland ice sheet. This result clearly identifies the Antarctic ice sheet as a significant source of melt water, most likely derived from one of the unstable, marine-based sectors in the West and/or East Antarctic ice sheet. Furthermore, the establishment of a +5.9 ± 1.7 m eustatic sea level position by 128.6 ± 0.8 ka would require that partial AIS collapse was coincident with the onset of the sea level highstand.","author":{"name":"Dutton, Andrea, Jody M. Webster, Dan Zwartz, Kurt Lambeck, and Barbara Wohlfarth"},"citation":"Dutton, Andrea, Jody M. Webster, Dan Zwartz, Kurt Lambeck, and Barbara Wohlfarth. 2015. Tropical tales of polar ice: evidence of Last Interglacial polar ice sheet retreat recorded by fossil reefs of the granitic Seychelles islands. Quaternary Science Reviews, 107, 182-196. doi: 10.1016/j.quascirev.2014.10.025","edition":null,"identifier":{"id":"10.1016/j.quascirev.2014.10.025","type":"doi","url":"http://dx.doi.org/10.1016/j.quascirev.2014.10.025"},"issue":null,"journal":"Quaternary Science Reviews","pages":"182-196","pubRank":"1","pubYear":2015,"reportNumber":null,"title":"Tropical tales of polar ice: evidence of Last Interglacial polar ice sheet retreat recorded by fossil reefs of the granitic Seychelles islands","type":"publication","volume":"107"}],"reconstruction":"Y","scienceKeywords":["Sea Level Reconstruction"],"site":[{"NOAASiteId":"57444","geo":{"geoType":"Feature","geometry":{"coordinates":["-4.38","-4.28","55.73","55.84"],"type":"POLYGON"},"properties":{"easternmostLongitude":"55.84","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"-4.28","southernmostLatitude":"-4.38","westernmostLongitude":"55.73"}},"locationName":"Ocean>Indian Ocean>Seychelles","mappable":"N","paleoData":[{"NOAADataTableId":"33744","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>corals and sclerosponges>physical properties","earth science>paleoclimate>corals and sclerosponges>age control","earth science>paleoclimate>corals and sclerosponges>chemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/coral/indian_ocean/dutton2015/dutton2015-seychelles.txt","linkText":"Fossil Coral Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"lab sample identification; asterisks represent previously published ages that have been recalculated here using different decay constants for 230Th and 234U","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":"registered at SESAR","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>International Geo Sample Number"},{"cvAdditionalInfo":"outcrop number","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"cvAdditionalInfo":"taxonomic identification; coral genus species","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"cvAdditionalInfo":"growth form of coral","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"cvAdditionalInfo":"elevation measured with respect to mean low water springs","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"sampling metadata>collection elevation"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":"x-ray diffraction","cvSeasonality":null,"cvShortName":null,"cvUnit":"weight percent","cvWhat":"geological material>identified mineral>carbonate>calcium carbonate>calcite"},{"cvAdditionalInfo":"U-Th geochronology","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"U-Th geochronology","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":"two standard deviations","cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"U-Th geochronology; average ages for a coral are inverse variance-weighted means of data passing the screening criteria","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"U-Th geochronology; average ages for a coral are inverse variance-weighted means of data passing the screening criteria","cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"averaged","cvError":"two standard deviations","cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"}]}],"dataTableName":"Seychelles Coral Dutton2015","dataTableNotes":null,"earliestYear":129000,"earliestYearBP":129000,"earliestYearCE":-127050,"mostRecentYear":123000,"mostRecentYearBP":123000,"mostRecentYearCE":-121050,"species":[],"timeUnit":"cal yr BP"}],"siteName":"La Digue and Curieuse Islands"}],"studyCode":null,"studyName":"Seychelles Fossil Coral Data from the Last Interglacial","studyNotes":"Samples collected ~3.5 - 8 meters above mean low water. Site elevations have a measurement precision of 0.2 m.\n      Provided Keywords: sea level, U-Th, MIS 5e, coral, Seychelles","version":"1.0","xmlId":"20821"}