{"refrec":{"BRefID":23601,"RR":"<b>Raynaud, D.; Chappellaz, J.; Blünier, T.</b> (1998). Ice-core record of atmospheric methane changes: relevance to climatic changes and possible gas hydrate sources, <b><i>in</i></b>: Henriet, J.-P. <i>et al.</i> <i>Gas hydrates: relevance to world margin stability and climate change. Geological Society Special Publication,</i> 137: pp. 327-331. <a href=\"https://dx.doi.org/10.1144/GSL.SP.1998.137.01.26\" target=\"_blank\">https://dx.doi.org/10.1144/GSL.SP.1998.137.01.26</a>","BEntID":23601,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: Henriet, J.-P. <i>et al.</i> <i>Gas hydrates: relevance to world margin stability and climate change. Geological Society Special Publication,</i> 137: pp. 327-331. <a href=\"https://dx.doi.org/10.1144/GSL.SP.1998.137.01.26\" target=\"_blank\">https://dx.doi.org/10.1144/GSL.SP.1998.137.01.26</a>","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Raynaud, D.; Chappellaz, J.; Blünier, T.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Raynaud, D.; Chappellaz, J.; Blünier, T.","Englishabstract":"The Antarctic and Greenland ice contains an almost direct record of past atmospheric CH<sub>4</sub>. The record over the last 200 years reveals a spectacular 150% increase of the CH<sub>4</sub> atmospheric mixing ratio since pre-industrial times. At the scale of a glacial-interglacial cycle the record shows a remarkable correlation with climatic changes, with high (low) CH<sub>4</sub> levels during warm (cold) periods. A striking feature of the glacial-interglacial CH<sub>4</sub> record is the presence of large and abrupt (at the scale of a century or less) changes during the last glaciation and glacial-interglacial transition. The classical interpretation for the origin of CH<sub>4</sub> changes prior to the industrial era involves mainly the wetland source. In the context of gas hydrates the question is to know whether the past ice-core record contains fingerprints of catastrophic hydrate release (CHR). We currently conclude that the available record shows no evidence for CHR but additional ice-core analyses are necessary to reach a more definitive conclusion.","AbstractOtherLang":null,"BibLvlCode":"AMS","StandardTitle":"Ice-core record of atmospheric methane changes: relevance to climatic changes and possible gas hydrate sources","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":"ice-core records","Notes":null,"AnaPub":1998,"MonPub":null,"DateUpdate":"2022-03-22","DateCreate":"2002-03-21","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.1144/GSL.SP.1998.137.01.26"},"refs":null,"anarec":{"AnaID":23601,"PubliDate":1998,"Pagination":"327-331","XtraPublOfAnaID":null,"ISBN":"1-86239-010-X","Volume":"137","Issue":null,"BRefMon":23545,"BRefMonRR":"<b>Henriet, J.-P.; Mienert, J.</b> (1998). 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