{"NOAAStudyId":"23234","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":"2017-11-17","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-23234.xml","doi":null,"earliestYearBP":150,"earliestYearCE":1800,"entryId":"noaa-icecore-23234","funding":[{"fundingAgency":"Deutsche Forschungsgemeinschaft","fundingGrant":"Re762/2, Oe130/3"},{"fundingAgency":"European Science Foundation/European Commission","fundingGrant":"ENV4-CT95-0074"}],"investigators":"Oerter, H.; Wilhelms, F.; Jung-Rothenhäusler, J.; Göktas, F.; Miller, H.; Graf, W.; Sommer, S.","mostRecentYearBP":-47,"mostRecentYearCE":1997,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23234","originalSource":null,"publication":[{"abstract":"The European Programme for Ice Coring in Antarctica includes a comprehensive pre-site survey on the inland ice plateau of Dronning Maud Land, Antarctica. The German glaciological programme during the 1997/98 field season was carried out along a 1200 km traverse on Amundsenisen and involved sampling the snow cover in pits and by shallow firn cores. This paper focuses on the accumulation studies. The cores were dated by dielectric-profiling and continuous-flow analysis. Distinct volcanogenic peaks and seasonal signals in the profiles served to establish a depth time-scale. The eruptions of Krakatoa, Tambora, an unknown volcano, Kuwae and El Chichon are well-documented in the ice. Variations of the accumulation rates over different times were inferred from the depth time-scales. A composite record of accumulation rates for the last 200 years was produced by stacking 12 annually resolved records. According to this, accumulation rates decreased in the 19th century and increased in the 20th century. The recent values are by no means extraordinary, as they do not exceed the values at the beginning of the 19th century. Variations in accumulation rates are most probably linked to temperature variations indicated in δ18O records from Amundsenisen.","author":{"name":"Oerter, H., F. Wilhelms, F. Jung-Rothenhäusler, F. Göktas, H. Miller, W. Graf, and S. Sommer"},"citation":"Oerter, H., F. Wilhelms, F. Jung-Rothenhäusler, F. Göktas, H. Miller, W. Graf, and S. Sommer. 2000. Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores. Annals of Glaciology, 30(1), 27-34. doi: 10.3189/172756400781820705","edition":null,"identifier":{"id":"10.3189/172756400781820705","type":"doi","url":"http://dx.doi.org/10.3189/172756400781820705"},"issue":"1","journal":"Annals of Glaciology","pages":"27-34","pubRank":"1","pubYear":2000,"reportNumber":null,"title":"Accumulation rates in Dronning Maud Land, Antarctica, as revealed by dielectric-profiling measurements of shallow firn cores","type":"publication","volume":"30"},{"abstract":null,"author":{"name":"Graf, Wolfgang, Hans Oerter, Oskar Reinwarth, Willibald Stichler, Frank Wilhelms, Heinz Miller, and Robert Mulvaney"},"citation":"Graf, Wolfgang, Hans Oerter, Oskar Reinwarth, Willibald Stichler, Frank Wilhelms, Heinz Miller, and Robert Mulvaney. 2002. Stable-isotope records from Dronning Maud Land, Antarctica. Annals of Glaciology, 35(1), 195-201. doi: 10.3189/172756402781816492","edition":null,"identifier":{"id":"10.3189/172756402781816492","type":"doi","url":"http://dx.doi.org/10.3189/172756402781816492"},"issue":"1","journal":"Annals of Glaciology","pages":"195-201","pubRank":"2","pubYear":2002,"reportNumber":null,"title":"Stable-isotope records from Dronning Maud Land, Antarctica","type":"publication","volume":"35"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57572","geo":{"geoType":"Feature","geometry":{"coordinates":["-74.2083","-9.7472"],"type":"POINT"},"properties":{"easternmostLongitude":"-9.7472","maxElevationMeters":"1439","minElevationMeters":"1439","northernmostLatitude":"-74.2083","southernmostLatitude":"-74.2083","westernmostLongitude":"-9.7472"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"34753","coreLengthMeters":26,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site7_33-PAGESAnt2k-DML_Plateau_FB9802.txt","linkText":"Kottas Camp d18O Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"based on dielectric profiling; 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continuous flow analysis; volcanic reference horizons; seasonal variability of Na and Ca content","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":"mean annual values","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"DML16C98_13 FB9813 d18O Oerter2000","dataTableNotes":null,"earliestYear":1800,"earliestYearBP":150,"earliestYearCE":1800,"mostRecentYear":1997,"mostRecentYearBP":-47,"mostRecentYearCE":1997,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"34756","coreLengthMeters":21,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>accumulation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site1_27-accum-DML_Plateau_FB9813.txt","linkText":"DML16 Snow Accumulation Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"based on dielectric profiling; 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