Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Model of formation of double structure gas hydrates in Lake Baikal based on isotopic data. / Hachikubo, Akihiro; Khlystov, Oleg; Manakov, Andrey; Kida, Masato; Krylov, Alexey; Sakagami, Hirotoshi; Minami, Hirotsugu; Takahashi, Nobuo; Shoji, Hitoshi; Kalmychkov, Gennadiy; Poort, Jeffrey.
в: Geophysical Research Letters, Том 36, № 18, L18504, 01.09.2009.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Model of formation of double structure gas hydrates in Lake Baikal based on isotopic data
AU - Hachikubo, Akihiro
AU - Khlystov, Oleg
AU - Manakov, Andrey
AU - Kida, Masato
AU - Krylov, Alexey
AU - Sakagami, Hirotoshi
AU - Minami, Hirotsugu
AU - Takahashi, Nobuo
AU - Shoji, Hitoshi
AU - Kalmychkov, Gennadiy
AU - Poort, Jeffrey
N1 - Copyright: Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2009/9/1
Y1 - 2009/9/1
N2 - We measured the isotopic compositions of methane (C1) and ethane (C2) of hydrate-bound gas and of dissolved gas in pore water retrieved from bottom sediments in Lake Baikal. Both structure I (sI:3%C 2) and II (sII:14%C2) gas hydrates are observed in the same sediment cores in Kukuy K-2 mud volcano. We found that C2 δD of sI gas hydrate is larger than that of sII, whereas C1 δ13C, C1 δD and C2 δ13C values are practically the same in both hydrate structures. δ13C Of C1 and C2 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.
AB - We measured the isotopic compositions of methane (C1) and ethane (C2) of hydrate-bound gas and of dissolved gas in pore water retrieved from bottom sediments in Lake Baikal. Both structure I (sI:3%C 2) and II (sII:14%C2) gas hydrates are observed in the same sediment cores in Kukuy K-2 mud volcano. We found that C2 δD of sI gas hydrate is larger than that of sII, whereas C1 δ13C, C1 δD and C2 δ13C values are practically the same in both hydrate structures. δ13C Of C1 and C2 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.
UR - http://www.scopus.com/inward/record.url?scp=72149083565&partnerID=8YFLogxK
U2 - 10.1029/2009GL039805
DO - 10.1029/2009GL039805
M3 - Article
VL - 36
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 18
M1 - L18504
ER -
ID: 5477579