georefid:2008-001656SEDIS Publication Catalogue
ana.macario@awi.de
http://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1007/s00382-005-0063-y<gco:CharacterString>The glacial inception as recorded in the NorthGRIP Greenland ice core; timing, structure and associated abrupt temperature changes</gco:CharacterString>2006-01-01publicationgeorefid:2008-001656doi:10.1007/s00382-005-0063-yLandais, AmaelleUniversite Joseph Fourier, CNRS, Laboratoire des Sciences du Climat et de l'Environment, Gif-sur-Yvette, FranceauthorMasson-Delmotte, ValerieUniversity of Copenhagen, DenmarkauthorJouzel, JeanUniversity of Bern, SwitzerlandauthorRaynaud, DominiqueHebrew University, IsraelauthorJohnsen, SigfusauthorHuber, ChristofauthorLeuenberger, MarkusauthorSchwander, JakobauthorMinster, BenedicteauthorSpringer-Verlag, Heidelberg, Federal Republic of GermanypublisherdocumentHardcopyClimate Dynamics26 (2-3)273-284The mechanisms involved in the glacial inception are still poorly constrained due to a lack of high resolution and cross-dated climate records at various locations. Using air isotopic measurements in the recently drilled NorthGRIP ice core, we show that no evidence exists for stratigraphic disturbance of the climate record of the last glacial inception encompassing Dansgaard-Oeschger events (DO) 25, 24 and 23, even if we lack sufficient resolution to completely rule out disturbance over DO 25. We quantify the rapid surface temperature variability over DO 23 and 24 with associated warmings of 10+ or -2.5 and 16+ or -2.5 degrees C, amplitudes which mimic those observed in full glacial conditions. We use records of delta (super 18) O of O (sub 2) to propose a common timescale for the NorthGRIP and the Antarctic Vostok ice cores, with a maximum uncertainty of 2,500 years, and to examine the interhemispheric sequence of events over this period. (mod. journ. abst.)completedQuaternary geologyAntarcticaArctic regionCenozoicclimate changeglacial environmentglacial geologyGreenlandGreenland ice sheetGRIPice coresice sheetsisotope ratiosisotopesLeg 162N-15/N-14NGRIPnitrogenO-18/O-16Ocean Drilling ProgramODP Site 980oxygenpaleoatmospherepaleoclimatologypaleotemperatureQuaternarystable isotopestemperatureVostok Stationurn:org.iodp:exp:162urnlargerWorkCitationcampaignurn:org.iodp:exp:162:site:980urnlargerWorkCitationstudyurn:org.iodp:exp:162urnlargerWorkCitationcampaignEnglishgeoscientificInformation-14.4208106.4800-78.280055.2906Vostok Station