2024-03-28T18:40:51Z
https://kitami-it.repo.nii.ac.jp/oai
oai:kitami-it.repo.nii.ac.jp:00007578
2022-12-13T02:21:02Z
1:86
Isotopic fractionation of methane and ethane hydrates between gas and hydrate phases
Hachikubo, Akihiro
Kosaka, Tomoko
Kida, Masato
Krylov, Alexey
Sakagami, Hirotoshi
Minami, Hirotsugu
Takahashi, Nobuo
Shoji, Hitoshi
gas hydrate
stable isotope
methane
Isotopic fractionation of carbon and hydrogen in
methane and ethane during the formation of gas hydrates
was investigated. The gas hydrate samples were
experimentally prepared in a pressure cell and isotopic
compositions of both residual and hydrate-bound gases
were measured. dD of hydrate-bound molecules of methane
and ethane hydrates was several per mil lower than that of
residual gas molecules in the formation processes, while
there was no difference in the case of d13C. These isotopic
differences in dD are enough small for discussing the source
types of hydrate-bound gases using the d13C-dD diagram of
Whiticar et al. [1986]. These results may provide useful
insight into the formation process of gas hydrates.
journal article
American Geophysical Union
2007-11
application/pdf
GEOPHYSICAL RESEARCH LETTERS
34
L21502
https://kitami-it.repo.nii.ac.jp/record/7578/files/(2007)JGR.pdf
eng
http://doi.org/10.1029/2007GL030557
open access