{"refrec":{"BRefID":209220,"RR":"<b>Schmid, M.; De Batist, M.; Granin, N. G.; Kapitanov, V.A.; McGinnis, D. F.; Mizandrontsev, I. B.; Obzhirov, A.I.; Wüest, A.</b> (2007). Sources and sinks of methane in Lake Baikal: A synthesis of measurements and modeling. <i>Limnol. Oceanogr. 52(5)</i>: 1824-1837. <a href=\"http://dx.doi.org/10.4319/lo.2007.52.5.1824\" target=\"_blank\">dx.doi.org/10.4319/lo.2007.52.5.1824</a>","BEntID":201205,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Limnol. Oceanogr. 52(5)</i>: 1824-1837. <a href=\"https://dx.doi.org/10.4319/lo.2007.52.5.1824\" target=\"_blank\">https://dx.doi.org/10.4319/lo.2007.52.5.1824</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Schmid, M.; De Batist, M.; Granin, N. G.; Kapitanov, V.A.; McGinnis, D. F.; Mizandrontsev, I. B.; Obzhirov, A.I.; Wüest, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Schmid, M. <i>et al.</i>","Englishabstract":"We studied the methane (CH<sub>4</sub>) budget of Lake Baikal, the most voluminous lake in the world and the only freshwater body with known occurrences of methane hydrates in the sediments. CH<sub>4</sub> concentrations were measured in water samples taken during six expeditions between October 2002 and June 2004; these expeditions covered the entire lake volume. A one-dimensional model was applied to (1) estimate the large-scale vertical CH<sub>4</sub> fluxes within the South Basin of Lake Baikal, (2) determine the exchange with the atmosphere, and (3) constrain the CH<sub>4</sub> inputs from seeps and mud volcanoes to the deep water. Fluxes were generally several orders of magnitude below previous estimates. The annual internal source of CH<sub>4</sub> to the pelagic surface mixed layer was roughly estimated to be 40 Mg CH<sub>4</sub>. A large part of this input diffuses downwards and is consumed in the water column, with a CH<sub>4</sub> residence time of about 4 yr. The input of CH<sub>4</sub> from deep gas seeps and mud volcanoes is less than a few 10 Mg CH<sub>4</sub> yr<sup>-1</sup>, most of which is oxidized before reaching the surface. The net CH<sub>4</sub> flux between the atmosphere and the main waterbody distant from shallow areas is negligible and not significantly different from zero. However, occasional high CH<sub>4</sub> concentrations, both in the surface water and in the atmosphere, indicate that the region near the Selenga delta is a local CH<sub>4</sub> source to the atmosphere. CH<sub>4</sub> fluxes in the Central Basin are very similar to those in the South Basin, whereas in the North Basin, the shallow CH<sub>4</sub> sources are weaker.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Sources and sinks of methane in Lake Baikal: A synthesis of measurements and modeling","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":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2012-02-16","DateCreate":"2011-11-03","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000249416200008","VABBcode":null,"OpenAcc":0,"DOI":"10.4319/lo.2007.52.5.1824"},"refs":null,"anarec":{"AnaID":209220,"PubliDate":2007,"Pagination":"1824-1837","XtraPublOfAnaID":null,"ISBN":null,"Volume":"52","Issue":"5","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43511,"SerRR":"Limnology and Oceanography. 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