Structural Studies of Lake Baikal Natural Gas Hydrates


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详细

The structure of near-bottom gas hydrate samples obtained in Lake Baikal during the expeditions in 2005–2018 are reported. The hydrates contain mainly methane and ethane. More than 85% of the samples contain hydrate of cubic structure I (sI) with up to 4.2 mol.% ethane. The concentration of ethane in the samples containing hydrate of cubic structure II (sII) is 12–14 mol.%. Refined unit cell parameters of natural hydrates are in good agreement with the data obtained in the studies of artificially synthesized hydrates. Possible mechanisms for the formation of sII hydrates are discussed. Some arguments are provided in favor of a probable presence of dispersed gas hydrates in the near-bottom layers of Baikal sediments and the possibility of small variations in the composition of hydrate gas in different hydrate fragments taken from the same hydrate layer.

作者简介

A. Manakov

Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University

编辑信件的主要联系方式.
Email: manakov@niic.nsc.ru
俄罗斯联邦, Novosibirsk; Novosibirsk

O. Khlystov

Limnological Institute, Siberian Branch

Email: manakov@niic.nsc.ru
俄罗斯联邦, Irkutsk

A. Hachikubo

Enviromental and Energy Resources Research Center

Email: manakov@niic.nsc.ru
日本, Koen-cho, Kitami

Kh. Minami

Enviromental and Energy Resources Research Center

Email: manakov@niic.nsc.ru
日本, Koen-cho, Kitami

S. Yamashita

Enviromental and Energy Resources Research Center

Email: manakov@niic.nsc.ru
日本, Koen-cho, Kitami

A. Khabuev

Limnological Institute, Siberian Branch

Email: manakov@niic.nsc.ru
俄罗斯联邦, Irkutsk

A. Ogienko

Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk State University

Email: manakov@niic.nsc.ru
俄罗斯联邦, Novosibirsk; Novosibirsk

A. Ildyakov

Nikolaev Institute of Inorganic Chemistry, Siberian Branch

Email: manakov@niic.nsc.ru
俄罗斯联邦, Novosibirsk

G. Kalmychkov

Vinogradov Institute of Geochemistry, Siberian Branch

Email: manakov@niic.nsc.ru
俄罗斯联邦, Irkutsk

T. Rodionova

Nikolaev Institute of Inorganic Chemistry, Siberian Branch

Email: manakov@niic.nsc.ru
俄罗斯联邦, Novosibirsk

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