@article{oai:kitami-it.repo.nii.ac.jp:00007578,
 author = {Hachikubo, Akihiro and Kosaka, Tomoko and Kida, Masato and Krylov, Alexey and Sakagami, Hirotoshi and Minami, Hirotsugu and Takahashi, Nobuo and Shoji, Hitoshi},
 journal = {GEOPHYSICAL RESEARCH LETTERS},
 month = {Nov},
 note = {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.},
 title = {Isotopic fractionation of methane and ethane hydrates between gas and hydrate phases},
 volume = {34},
 year = {2007}
}