{"NOAAStudyId":"16256","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":"2014-04-02","dataPublisher":"NOAA","dataType":"PALEOCEANOGRAPHY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-16256.xml","doi":null,"earliestYearBP":99,"earliestYearCE":1851,"entryId":"noaa-ocean-16256","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"OCE-0961670, OCE-1258984"},{"fundingAgency":"Comer Science and Education Foundation","fundingGrant":"CP75"}],"investigators":"Alonso-García, M.; Andrews, J.T.; Belt, S.T; Cabedo-Sanz, P.; Darby, D.; Jaeger, J.M.","mostRecentYearBP":-36,"mostRecentYearCE":1986,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/16256","originalSource":null,"publication":[{"abstract":"The reduction in sea ice along the SE Greenland coast during the last century has severely impacted ice-rafting to this area. In order to reconstruct ice-rafting and oceanographic conditions in the area of Denmark Strait during the last ~150 yr we conducted a multi-proxy study on three short (20 cm) sediment cores from outer Kangerdlugssuaq Though (~300m water depth). The proxy-based data obtained has been compared with historical and instrumental data to gain a better understanding of the ice sheet-ocean interactions in the area. A robust chronology has been developed based on 210Pb and 137Cs measurements on core PO175GKC#9 (~66.2°N, 32°W) and expanded to the two adjacent cores based on correlations between calcite weight% records. Our proxy records include sea ice and phytoplankton biomarkers, and a variety of mineralogical determinations based on the <2 mm sediment fraction, including identification with quantitative X-ray diffraction, ice-rafted debris counts o! n the 63-150 µm sand fraction, and source identifications based on the composition of Fe oxides in the 45-250 µm fraction. A multivariate statistical analysis indicated significant correlations between our proxy records and historical data, especially with the mean annual temperature data from Stykkisholmur (Iceland) and the storis index (historical observations of sea ice export via the East Greenland Current). In particular, the biological proxies (calcite wt%, IP25, and TOC%) showed significant linkage with the storis index. Our records show two distinct intervals in the recent history of the SE Greenland coast. The first of these (AD 1850-1910) shows predominantly perennial sea ice conditions in the area, while the second (AD 1910-1990) shows more seasonally open water conditions.","author":{"name":"Alonso-García, M., J.T. Andrews, S.T. Belt, P. Cabedo-Sanz, D. Darby, and J. Jaeger"},"citation":"Alonso-García, M., J.T. Andrews, S.T. Belt, P. Cabedo-Sanz, D. Darby, and J. Jaeger. 2013. A comparison between multiproxy and historical data (AD 1990-1840) of drift ice conditions on the East Greenland shelf (~66°N). The Holocene, 23(12), 1672-1683. doi: 10.1177/0959683613505343","edition":null,"identifier":{"id":"10.1177/0959683613505343","type":"doi","url":"http://dx.doi.org/10.1177/0959683613505343"},"issue":"12","journal":"The Holocene","pages":"1672-1683","pubRank":"1","pubYear":2013,"reportNumber":null,"title":"A comparison between multiproxy and historical data (AD 1990-1840) of drift ice conditions on the East Greenland shelf (~66°N)","type":"publication","volume":"23"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"55828","geo":{"geoType":"Feature","geometry":{"coordinates":["66.204","-31.985"],"type":"POINT"},"properties":{"easternmostLongitude":"-31.985","maxElevationMeters":"-300","minElevationMeters":"-300","northernmostLatitude":"66.204","southernmostLatitude":"66.204","westernmostLongitude":"-31.985"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic 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AG13","dataTableNotes":null,"earliestYear":1851,"earliestYearBP":99,"earliestYearCE":1851,"mostRecentYear":1986,"mostRecentYearBP":-36,"mostRecentYearCE":1986,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"26272","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>biomarkers"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/alonso-garcia2013/alonso-garcia2013-gkc9-biom.txt","linkText":"PO175GKC#9 Biomarker","urlDescription":"Formatted Text File","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","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":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per billion","cvWhat":"chemical composition>compound>organic compound>hydrocarbon>alkene>highly-branched isoprenoid alkene>ice proxy with 25 carbon atoms"},{"cvAdditionalInfo":"di-unsaturated HBI diene","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per billion","cvWhat":"chemical composition>compound>organic compound>hydrocarbon>alkene>highly-branched isoprenoid alkene"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"microgram per gram","cvWhat":"chemical composition>compound>organic compound>organic hydroxy compound>sterol>brassicasterol"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"percent","cvWhat":"chemical composition>element or single-element molecule>carbon>organic carbon"},{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"}]}],"dataTableName":"PO175GKC#9 Biomarker AG13","dataTableNotes":null,"earliestYear":1851,"earliestYearBP":99,"earliestYearCE":1851,"mostRecentYear":1986,"mostRecentYearBP":-36,"mostRecentYearCE":1986,"species":[],"timeUnit":"AD"}],"siteName":"PO175GKC"}],"studyCode":null,"studyName":"East Greenland Shelf Sediment Data from 1850-1986 AD","studyNotes":"In order to reconstruct ice-rafting and oceanographic conditions in the area of Denmark Strait during the last ~150 yr we conducted a multi-proxy study on three short (20 cm) sediment cores from outer Kangerdlugssuaq Trough (~300m water depth). The proxy-based data obtained has been compared with historical and instrumental data to gain a better understanding of the ice sheet-ocean interactions in the area. \n A robust chronology has been developed based on 210Pb and 137Cs measurements on core PO175GKC#9 (~66.2°N, 32°W) and expanded to the two adjacent cores based on correlations between calcite weight% records. Our proxy records include sea ice and phytoplankton biomarkers, and a variety of mineralogical determinations based on the <2 mm sediment fraction, including identification with quantitative X-ray diffraction, ice-rafted debris counts on the 63-150 µm sand fraction, and source identifications based on the composition of Fe oxides in the 45-250 µm fraction.\n","version":"1.0","xmlId":"13963"}