{"xmlId":"1288","NOAAStudyId":"2429","studyName":"Camp Century - Oxygen Isotope and Accumulation Data","doi":"https://doi.org/10.25921/0537-2h54","uuid":"487c6c74-4d78-4e7f-8bf6-006a650bb9aa","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"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."},"dataType":"ICE CORES","investigators":"Dansgaard, W.; Johnsen, S.J.; Møller, J.; Langway, Jr., C.C.","investigatorDetails":[{"firstName":"Willi","lastName":"Dansgaard","initials":"W.","orcId":null},{"firstName":"Sigfús Jóhann","lastName":"Johnsen","initials":"S.J.","orcId":null},{"firstName":null,"lastName":"Møller","initials":"J.","orcId":null},{"firstName":"Chester","lastName":"Langway, Jr.","initials":"C.C.","orcId":null}],"version":"1.0","funding":[],"studyNotes":"In 1966, the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL) succeeded in drilling the first core to bedrock on the Greenland ice sheet at Camp Century (77 deg. 10 min.N, 61 deg. 08 min. W). By 1963, a thermal coring system, the CRREL drill, had been developed under the scientific leadership of Henri Bader as part of the U.S. International Geophysical Year (IGY) glaciology program in Greenland and Antartctica. In 1960-61, a 186 meter core was recovered. A second hole was drilled in 1962 from which 238 meters of core were obtained. A third hole was started in 1963 and 264 meters of core were recovered. In 1964, the third hole was extended to 535 meters using the thermal drill in a fluid filled hole. In 1965, an electromechanical drill extended the third hole to 1,002 meters and in July 1966, the bottom of the ice was reached at a depth of 1387.4 meters. 3.55 meters of frozen till was also recovered making the total depth of the hole 1391 meters.","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/2429","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-2429.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-icecore-2429.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/ice-core","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"1998-01-01","entryId":"noaa-icecore-2429","earliestYearBP":708,"mostRecentYearBP":-25,"earliestYearCE":1242,"mostRecentYearCE":1975,"publication":[{"author":{"name":"Dansgaard, W., S.J. Johnsen, J. Moller, and C.C. Langway, Jr."},"pubYear":1969,"title":"One thousand centuries of climatic record from Camp Century on the Greenland ice sheet","journal":"Science","volume":"166","edition":null,"issue":"3903","pages":"377-381","reportNumber":null,"citation":"Dansgaard, W., S.J. Johnsen, J. Moller, and C.C. Langway, Jr. 1969. One thousand centuries of climatic record from Camp Century on the Greenland ice sheet. Science, 166(3903), 377-381. doi: 10.1126/science.166.3903.377","type":"publication","identifier":{"type":"doi","id":"10.1126/science.166.3903.377","url":"http://dx.doi.org/10.1126/science.166.3903.377"},"abstract":"A correlation of time with depth has been evaluated for the Camp Century, Greenland, 1390 meter deep ice core. Oxygen isotopes in approximately 1600 samples throughout the core have been analyzed. Long-term variations in the isotopic composition of the ice reflect the climatic changes during the past nearly 100,000 years. Climatic oscillations with periods of 120, 940, and 13,000 years are observed.","pubRank":"1"},{"author":{"name":"Hansen, L.B., and C.C. Langway, Jr."},"pubYear":1966,"title":"Deep core drilling in ice and core analysis at Camp Century, Greenland, 1961-1966","journal":"Special CRREL Report","volume":"126","edition":null,"issue":"5","pages":"207-208","reportNumber":null,"citation":"Hansen, L.B., and C.C. Langway, Jr. 1966. Deep core drilling in ice and core analysis at Camp Century, Greenland, 1961-1966. Special CRREL Report, 126(5), 207-208. ","type":"publication","identifier":null,"abstract":null,"pubRank":"3"},{"author":{"name":"Johnsen, S.J.; W. Dansgaard; H.B. Clausen; and C.C. Langway, Jr."},"pubYear":1972,"title":"Oxygen isotope profiles through the Antarctic and Greenland ice sheets","journal":"Nature","volume":"235","edition":null,"issue":null,"pages":"429-434","reportNumber":null,"citation":"Johnsen, S.J.; W. Dansgaard; H.B. Clausen; and C.C. Langway, Jr. 1972. Oxygen isotope profiles through the Antarctic and Greenland ice sheets. Nature, 235, 429-434. doi: 10.1038/235429a0","type":"publication","identifier":{"type":"doi","id":"10.1038/235429a0","url":"http://dx.doi.org/10.1038/235429a0"},"abstract":null,"pubRank":"5"},{"author":{"name":"Johnsen, S.J.; W. Dansgaard; H.B. Clausen; and C.C. Langway, Jr."},"pubYear":1970,"title":"Climatic oscillations 1200-2000 A.D","journal":"Nature","volume":"227","edition":null,"issue":null,"pages":"482-483","reportNumber":null,"citation":"Johnsen, S.J.; W. Dansgaard; H.B. Clausen; and C.C. Langway, Jr. 1970. Climatic oscillations 1200-2000 A.D. Nature, 227, 482-483. doi: 10.1038/227482a0","type":"publication","identifier":{"type":"doi","id":"10.1038/227482a0","url":"http://dx.doi.org/10.1038/227482a0"},"abstract":null,"pubRank":"4"},{"author":{"name":"H.B. Clausen, N.S. Gundestrup, S.J. Johnsen, R. Bindschadler, and J. Zwalley"},"pubYear":1988,"title":"Glaciological Investigations in the Crete area, central Greenland: A search for a new deep-drilling site","journal":"Annals of Glaciology","volume":"10","edition":null,"issue":null,"pages":"10-15","reportNumber":null,"citation":"H.B. Clausen, N.S. Gundestrup, S.J. Johnsen, R. Bindschadler, and J. Zwalley. 1988. Glaciological Investigations in the Crete area, central Greenland: A search for a new deep-drilling site. Annals of Glaciology, 10, 10-15. doi: 10.3189/S0260305500004080","type":"publication","identifier":{"type":"doi","id":"10.3189/S0260305500004080","url":"http://dx.doi.org/10.3189/S0260305500004080"},"abstract":null,"pubRank":"2"}],"site":[{"NOAASiteId":"19984","siteName":"Camp Century","siteCode":null,"mappable":"Y","locationName":"Continent>North America>Greenland","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["77.17","-61.13"]},"properties":{"southernmostLatitude":"77.17","northernmostLatitude":"77.17","westernmostLongitude":"-61.13","easternmostLongitude":"-61.13","minElevationMeters":"1885","maxElevationMeters":"1885"}},"paleoData":[{"dataTableName":"CampCentury d18O Clausen1988","NOAADataTableId":"38415","earliestYear":1761,"mostRecentYear":1975,"timeUnit":"CE","earliestYearBP":189,"mostRecentYearBP":-25,"earliestYearCE":1761,"mostRecentYearCE":1975,"coreLengthMeters":null,"dataTableNotes":"The data are annual averages (May -April)","species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/gisp/campcentury/del1977.txt","urlDescription":"Data","linkText":"del1977.txt","variables":[{"cvDataType":"ICE CORES","cvWhat":"age variable>age>ice age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"ICE CORES","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"hydrologic material>bulk ice","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil SMOW","cvSeasonality":null,"cvDetail":"averaged","cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null}],"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes"]}]},{"dataTableName":"CampCentury CC-1 Clausen1988","NOAADataTableId":"38417","earliestYear":1975,"mostRecentYear":1761,"timeUnit":"CE","earliestYearBP":-25,"mostRecentYearBP":189,"earliestYearCE":1975,"mostRecentYearCE":1761,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/gisp/campcentury/cc1977.txt","urlDescription":"Data","linkText":"cc1977.txt","variables":[{"cvDataType":"ICE CORES","cvWhat":"sampling metadata>sample identification","cvMaterial":null,"cvError":null,"cvUnit":null,"cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"ICE CORES","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"hydrologic material>bulk ice","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil SMOW","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"ICE CORES","cvWhat":"formation property>formation rate>accumulation rate","cvMaterial":"hydrologic material>bulk ice","cvError":null,"cvUnit":"rate unit>length per time unit>centimeter per year","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"ICE CORES","cvWhat":"depth variable>depth","cvMaterial":null,"cvError":null,"cvUnit":"length unit>meter","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"ICE CORES","cvWhat":"age variable>age>ice age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null}],"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes","earth science>paleoclimate>ice core>physical properties"]}]},{"dataTableName":"CampCentury d18O-1yr Clausen1988","NOAADataTableId":"38416","earliestYear":1242,"mostRecentYear":1967,"timeUnit":"CE","earliestYearBP":708,"mostRecentYearBP":-17,"earliestYearCE":1242,"mostRecentYearCE":1967,"coreLengthMeters":null,"dataTableNotes":"This is Camp Century delta 18-O data and are 1 year averages. The data start in 1967 AD. and are computed on a new theoretical Dansgaard/Johnsen model with a lambda = .38m/year ice equivilent with a height of 429 meters.","species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/icecore/greenland/gisp/campcentury/cc-1ynew.txt","urlDescription":"Text File","linkText":"Camp Century Annual-Average Oxygen Isotope Data","variables":[{"cvDataType":"ICE CORES","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"hydrologic material>bulk ice","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil>per mil SMOW","cvSeasonality":null,"cvDetail":"averaged","cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"d18O"},{"cvDataType":"ICE CORES","cvWhat":"age variable>age>ice age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"age_CE"}],"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}