The First Discovery of the Gas Hydrates in the Sediments of the Lake Baikal

Kuzmin, M. I.; Geletiy, V. F.; Kalmychkov, G. V.; Kuznetsov, F. A.; Larionov, Eduard G.; Manakov, A. Yu.; Mironov, Yuri V.; Smoljakov, B. S.; Dyadin, Yu. A.; Дучков, А. Д.; Bazin, N. M.; Mahov, G. M.

doi:10.1111/j.1749-6632.2000.tb06764.x

Cited by 13 publications

(15 citation statements)

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“…The possibility of GH occurrence in Baikal sediments was suggested as early as 1980 [2]; later, a BSR seismic reflector was discovered in the course of multichannel seismic survey [3]. The first GH samples were lifted in 1997 from depths of 121 and 161 m with the core of Hole BDP-97, which was drilled in the Southern Basin of Baikal [4].…”

Section: Introductionmentioning

confidence: 99%

Crystallization of authigenic carbonates in mud volcanoes at Lake Baikal

et al. 2008

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-This paper presents data on authigenic siderite first found in surface sediments from mud volcanoes in the Central (K-2) and Southern (Malen'kii) basins of Lake Baikal. Ca is the predominant cation, which substitutes Fe in the crystalline lattice of siderite. The enrichment of the carbonates in the 13 ë isotope (from +3.3 to +6.8‰ for the Malen'kii volcano and from +17.7 to +21.9‰ for K-2) results from the crystallization of the carbonates during methane generation via the bacterial destruction of organic matter (acetate). The overall depletion of the carbonates in 18 O is mainly inherited from the isotopic composition of Baikal water.

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Section: Introductionmentioning

confidence: 99%

Crystallization of authigenic carbonates in mud volcanoes at Lake Baikal

et al. 2008

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“…Vanneste et al (2001) roughly estimated from seismic surveys that the total amount of CH 4 stored as hydrates in the sediments could be as high as 6 Pg. Based on its carbon isotopic composition, it has been suggested that the CH 4 in hydrates from the South Basin may be of biogenic origin (Kuzmin et al 2000), whereas recent observations indicate also a thermogenic component in hydrates collected in the Central Basin (Kida et al 2006). CH 4 is locally released by gas seeps and mud volcanoes (Fig.…”

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confidence: 99%

“…Besides the Black Sea (Vassilev and Dimitrov 2002), Lake Baikal is the only inland water mass in which large amounts of methane hydrates have been observed in the sediment (Hutchinson et al 1991;Golmshtok et al 1997;Kuzmin et al 2000) (Fig. 1).…”

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Sources and sinks of methane in Lake Baikal: A synthesis of measurements and modeling

Schmid

Batist

Granin

et al. 2007

Limnology & Oceanography

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We studied the methane (CH 4 ) 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 4 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 4 fluxes within the South Basin of Lake Baikal, (2) determine the exchange with the atmosphere, and (3) constrain the CH 4 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 4 to the pelagic surface mixed layer was roughly estimated to be 40 Mg CH 4 . A large part of this input diffuses downwards and is consumed in the water column, with a CH 4 residence time of about 4 yr. The input of CH 4 from deep gas seeps and mud volcanoes is less than a few 10 Mg CH 4 yr 21 , most of which is oxidized before reaching the surface. The net CH 4 flux between the atmosphere and the main waterbody distant from shallow areas is negligible and not significantly different from zero. However, occasional high CH 4 concentrations, both in the surface water and in the atmosphere, indicate that the region near the Selenga delta is a local CH 4 source to the atmosphere. CH 4 fluxes in the Central Basin are very similar to those in the South Basin, whereas in the North Basin, the shallow CH 4 sources are weaker.1 Corresponding author (martin.schmid@eawag.ch). AcknowledgmentsWe thank the captains and crews of RV Vereshchagin and RV Titov for their hard work during so many surveys; A. Ageev, V. Blinov, V. Druzhinin, R. Gnatovsky, A. Salyuk, M. Schurter, and O. Vereshchagina for their invaluable support in the field work; and I. Tyryshkin and Y. Ponomarev for their assistance in the design of the methane gas analyzer. Finally, the constructive input from two reviewers helped to improve the clarity of the manuscript.This project was supported by the INTAS grant 2001-2309 (multidisciplinary study of natural gas seeps in Lake Baikal-MULTISGAS). The water temperature measurements were supported by the EU-project CONTINENT (High-resolution CONTINENTal paleoclimate record in Lake Baikal: A key-site for Eurasian teleconnections to the North Atlantic Ocean and monsoonal system; EVK2-CT-2000-00057).

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“…Cores show biogenic gas hydrates with gas compositions approaching 99% methane (de Batist et al, 2002;Kuzmin et al, 2000), while seismic data show that BGHS extends 300-350 m below the floor of the lake. Cores show biogenic gas hydrates with gas compositions approaching 99% methane (de Batist et al, 2002;Kuzmin et al, 2000), while seismic data show that BGHS extends 300-350 m below the floor of the lake.…”

Section: Mud Volcanism In the Freshwater Of Lake Baikalmentioning

confidence: 99%

Hydrate-Associated Seafloor Instabilities

Rogers

2015

Offshore Gas Hydrates

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The First Discovery of the Gas Hydrates in the Sediments of the Lake Baikal

Cited by 13 publications

References 1 publication

Crystallization of authigenic carbonates in mud volcanoes at Lake Baikal

Crystallization of authigenic carbonates in mud volcanoes at Lake Baikal

Sources and sinks of methane in Lake Baikal: A synthesis of measurements and modeling

Hydrate-Associated Seafloor Instabilities

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