{"refrec":{"BRefID":209166,"RR":"<b>Hachikubo, A.; Khlystov, O.; Manakov, A.; Kida, M.; Krylov, A.; Sakagami, H.; Minami, H.; Takahashi, N.; Shoji, H.; Kalmychkov, G.; Poort, J.</b> (2009). Model of formation of double structure gas hydrates in Lake Baikal based on isotopic data. <i>Geophys. Res. Lett. 36(L18504)</i>: 5. <a href=\"http://dx.doi.org/10.1029/2009GL039805\" target=\"_blank\">dx.doi.org/10.1029/2009GL039805</a>","BEntID":201152,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Geophys. Res. Lett. 36(L18504)</i>: 5. <a href=\"https://dx.doi.org/10.1029/2009GL039805\" target=\"_blank\">https://dx.doi.org/10.1029/2009GL039805</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Hachikubo, A.; Khlystov, O.; Manakov, A.; Kida, M.; Krylov, A.; Sakagami, H.; Minami, H.; Takahashi, N.; Shoji, H.; Kalmychkov, G.; Poort, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Hachikubo, A. <i>et al.</i>","Englishabstract":"We measured the isotopic compositions of methane (C<sub>1</sub>) and ethane (C<sub>2</sub>) of hydrate-bound gas and of dissolved gas in pore water retrieved from bottom sediments in Lake Baikal. Both structure I (sI:3%C<sub>2</sub>) and II (sII:14%C<sub>2</sub>) gas hydrates are observed in the same sediment cores in Kukuy K-2 mud volcano. We found that C<sub>2</sub> dD of sI gas hydrate is larger than that of sII, whereas C<sub>1</sub> d<sup>13</sup>C, C<sub>1</sub> dD and C<sub>2</sub> d<sup>13</sup>C values are practically the same in both hydrate structures. d<sup>13</sup>C of C<sub>1</sub> and C<sub>2</sub> of hydrate-bound gas are several permil smaller than those in pore water, showing that the current pore water is not the source of gas hydrates. These findings lead to a new model where the sII gas hydrates were formed prior to the sI hydrates.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Model of formation of double structure gas hydrates in Lake Baikal based on isotopic data","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":"gas hydrate; Lake Baikal; stable isotope","OtherDescriptors":null,"Notes":null,"AnaPub":2009,"MonPub":null,"DateUpdate":"2014-11-06","DateCreate":"2011-11-03","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000270235100005","VABBcode":null,"OpenAcc":0,"DOI":"10.1029/2009GL039805"},"refs":null,"anarec":{"AnaID":209166,"PubliDate":2009,"Pagination":"5","XtraPublOfAnaID":null,"ISBN":null,"Volume":"36","Issue":"L18504","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42920,"SerRR":"Geophysical Research Letters. 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