{"NOAAStudyId":"2441","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":"1990-07-01","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-2441.xml","doi":null,"earliestYearBP":250000,"earliestYearCE":-248050,"entryId":"noaa-icecore-2441","funding":[],"investigators":"Petit, J.-R.; Mounier, L.; Jouzel, J.; Korotkevitch, Y.S.; Kotlyakov, V.M.; Lorius, C.","mostRecentYearBP":0,"mostRecentYearCE":1950,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2441","originalSource":null,"publication":[{"abstract":null,"author":null,"citation":"Petit, J.R., L. Mounier, J. Jouzel, Y. Korotkevitch, V. Kotlyakov, and C. Lorius. 1990. Paleoclimatological implications of the Vostok core dust record. Nature 343:56-58.","edition":null,"identifier":null,"issue":null,"journal":"Nature","pages":null,"pubRank":"1","pubYear":1990,"reportNumber":null,"title":"Paleoclimatological implications of the Vostok core dust record","type":"publication","volume":null}],"reconstruction":"N","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":"38384","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/vostok_dust.txt","linkText":"vostok_dust.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":"x10-9 units","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"cubic centimeter per gram","cvWhat":"geological material>bulk geological material>dust"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per gram","cvWhat":"geological material>bulk geological material>dust"}]}],"dataTableName":"Vostok dust Petit1990","dataTableNotes":"Column 7 gives the dust volume concentration in 10 -9 cm3 / g of ice as\r\npublished by Petit et al (1990) from 125 to 2202 m and by Jouzel et al. (1993) between 2202 and 2541m.\r\nColumn 8 gives the number of dust particles larger than .8 m per g of ice (Jouzel et al. 1996). As for deuterium measurements 3.41 m have been added to the depth measured in the field for 5G samples (on this core measurements have been done below 2500 m only).\r\n\r\nVOSTOK TIME SCALES USED IN THIS FILE: Columns 2 to 6\r\nDifferent timescales have been used for the interpretation of Vostok \r\nice core records. They are reported in ky BP.\r\n- The Lorius et al. timescale (column 2) has been derived by combining \r\na glaciological model, fully described in Ritz (1992) and an accumulation model \r\nin which past accumulation is derived from the temperature record reconstructed \r\nfrom the deuterium isotopic profile (see Lorius et al., 1985). \r\n- Sowers et al. correlated the d18O of paleoatmospheric O2 derived from \r\nthe Vostok 3G and 4G cores, into a record of changes in the d18O of sea water \r\nderived from records of the d18O of foraminifera (see Sowers et al., 1993). \r\nThis timescale is given in column 3.\t\r\n- The glaciological timescale of Lorius et al. (1985) has been extended \r\naccounting for a linear increase of modern accumulation upstream of Vostok. \r\nThis Extended Glaciological Timescale (EGT; column 4) is described in Jouzel et \r\nal. (1993).\r\n- Jouzel et al. (1996) have used a modified version of EGT (column 4) \r\nassuming that this timescale overestimates the increase of age with depth by \r\n12% for gas ages older than 112 ky BP.\r\n- Waelbroeck et al. (1995) have applied the orbital tuning approach to \r\nthe deuterium record to derive a timescale which is consistent with the SPECMAP \r\nmarine timescale. This orbitally derived timescale is given in column 6. \r\nIMPORTANT NOTE: because of filtering errors due to the finite length of the \r\nrecord, the upper and bottom 20 to 35 ky of the orbitally tuned chronology can \r\nnot be trusted. In the present file, the upper 35 ky of the orbitally tuned \r\nchronology have been replaced by the EGT timescale.","earliestYear":250000,"earliestYearBP":250000,"earliestYearCE":-248050,"mostRecentYear":0,"mostRecentYearBP":0,"mostRecentYearCE":1950,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"38385","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/dustflux.txt","linkText":"dustflux.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"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":"ICE CORES","cvDetail":"smoothed","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"milligram per square meter per year","cvWhat":"geological material>bulk geological material>dust"}]}],"dataTableName":"Vostok dustflux Petit1990","dataTableNotes":"file contents age, flux (in milligrams of\r\ndust per year and per square meters)\r\nThis was deduced from the published data\r\nassuming a dust density of 2, and is more\r\nconvenient value.  Original data are\r\nsmoothed using a spline function.","earliestYear":186000,"earliestYearBP":186000,"earliestYearCE":-184050,"mostRecentYear":4000,"mostRecentYearBP":4000,"mostRecentYearCE":-2050,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"38386","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>physical properties"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/dustvol.txt","linkText":"dustvol.txt","urlDescription":"Data","variables":[]}],"dataTableName":"Vostok dust volume Petit1990","dataTableNotes":"Insoluble microparticles published in Nature paper\r\n(Petit et al.,343,65253,56-58,1990)\r\nfile contents depth, dust volume concentration\r\n(in 10-9cm3 of dust per g of snow)","earliestYear":null,"earliestYearBP":null,"earliestYearCE":null,"mostRecentYear":null,"mostRecentYearBP":null,"mostRecentYearCE":null,"species":[],"timeUnit":null}],"siteName":"Vostok"}],"studyCode":null,"studyName":"Vostok - Dust Concentration and Flux Data","studyNotes":null,"version":"1.0","xmlId":"1297"}