{"NOAAStudyId":"13419","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":"2012-10-15","dataPublisher":"NOAA","dataType":"ICE CORES","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-13419.xml","doi":null,"earliestYearBP":715596,"earliestYearCE":-713646,"entryId":"noaa-icecore-13419","funding":[{"fundingAgency":"Natural Environment Research Council (NERC)","fundingGrant":"NER/A/S/2001/01011"}],"investigators":"Parrenin, F.; Rémy, F.; Ritz, C.; Siegert, M.J.; Jouzel, J.","mostRecentYearBP":0,"mostRecentYearCE":1950,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/13419","originalSource":null,"publication":[{"abstract":"We have used new spaceborne (elevation) and airborne (ice thickness) data to constrain a 2D1/2 model of snow accumulation and ice flow along the Ridge B-Vostok station ice flow line (East Antarctica). We show that new evaluations of the ice flow line geometry (from the surface elevation), ice thickness (from low-frequency radar data), and basal melting and sliding change significantly the chronology of the Vostok ice core. This new Vostok dating model reconciles orbital and glaciological timescales and is in good agreement with the Dome Fuji glaciological timescale. At the same time, the new model shows significantly older ages than the previous GT4 timescale for the last glacial part, being thus in better agreement with the GRIP and GISP2 chronologies. ","author":null,"citation":"Parrenin, F., F. Rémy, C. Ritz, M.J. Siegert, and J. Jouzel. 2004.\r\nNew modelling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core. \r\nJournal of Geophysical Research, Atmospheres, 109, D20102. \r\nDOI: 10.1029/2004JD004561 ","edition":null,"identifier":{"id":"10.1029/2004JD004561","type":"doi","url":"http://dx.doi.org/10.1029/2004JD004561"},"issue":null,"journal":"Journal of Geophysical Research: Atmospheres","pages":null,"pubRank":"1","pubYear":2004,"reportNumber":null,"title":"New modelling of the Vostok ice flow line and implication for the glaciological chronology of the Vostok ice core","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"19976","geo":{"geoType":"Feature","geometry":{"coordinates":["-78.47","106.8"],"type":"POINT"},"properties":{"easternmostLongitude":"106.8","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"-78.47","southernmostLatitude":"-78.47","westernmostLongitude":"106.8"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"23121","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>accumulation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/vostok2004flow.txt","linkText":"vostok2004flow.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":"calendar years before 1998 (drilling date)","cvDataType":"CLIMATE RECONSTRUCTIONS|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"annual","cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>surface temperature"},{"cvAdditionalInfo":"3G depth","cvDataType":"CLIMATE RECONSTRUCTIONS|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"depth in ice equivalent firn and bubbly ice have been compressed to have a uniform density","cvDataType":"CLIMATE RECONSTRUCTIONS|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"calendar years before 1998 (drilling date)","cvDataType":"CLIMATE RECONSTRUCTIONS|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>gas age"},{"cvAdditionalInfo":"ice accumulation rate","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter per year","cvWhat":"formation property>formation rate>accumulation rate"},{"cvAdditionalInfo":"ratio of a layer thickness to its initial thickness","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"formation property>thinning function"},{"cvAdditionalInfo":"horizontal origin of the ice expressed in m downstream the beginning of the flow line (Ridge B)","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"formation property>horizontal displacement"}]}],"dataTableName":"VK-FGT1","dataTableNotes":null,"earliestYear":715596,"earliestYearBP":715596,"earliestYearCE":-713646,"mostRecentYear":0,"mostRecentYearBP":0,"mostRecentYearCE":1950,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Vostok"}],"studyCode":null,"studyName":"Vostok VK-FGT1 ice flow simulation","studyNotes":"Ice age, gas age (computed with the Goujon, JGR, 2003 model), Accumulation, vertical thinning function, temperature and ice origin as produced by the VK-FGT1 ice flow simulation.","version":"1.0","xmlId":"11460"}