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Natural gas hydrates with locally different cage occupancies and hydration numbers in Lake Baikal

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Abstract
Knowledge of cage occupancies and hydration numbers (n) of naturally occurring gas hydrate in a local environment is important for the improvement in global estimates of hydrate-bound natural gas. We report on local differences in cage occupancies and hydration number of gas hydrates from Lake Baikal. Natural gas hydrates of both structures I and II (sI and sII) and ranging in composition from pure CH4 to mixed gas hydrate containing up to 15% C2H6 are compared. The average hydration numbers are n = 6.1 for the sI CH4 hydrates recovered from the Malenky and Bolshoy mud volcanoes, n = 6.2 for the sI hydrates, containing 3–4% C2H6 recovered from the K-2 mud volcano, and n = 6.9 for the sII hydrate containing about 15% C2H6 recovered from the K-2 mud volcano. The differences in hydration number are due to the differences in the small cage occupancy of CH4 among the samples studied.
Keywords
ETHANE, GULF, Lake Baikal, cage occupancy, hydration number, methane, ethane, natural gas hydrate, METHANE, C-13 NMR, MEXICO

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Chicago
Kida, Masato, Akihiro Hachikubo, Hirotoshi Sakagami, Hirotsugu Minami, Alexey Krylov, Satoshi Yamashita, Nobuo Takahashi, et al. 2009. “Natural Gas Hydrates with Locally Different Cage Occupancies and Hydration Numbers in Lake Baikal.” Geochemistry Geophysics Geosystems 10 (5).
APA
Kida, M., Hachikubo, A., Sakagami, H., Minami, H., Krylov, A., Yamashita, S., Takahashi, N., et al. (2009). Natural gas hydrates with locally different cage occupancies and hydration numbers in Lake Baikal. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, 10(5).
Vancouver
1.
Kida M, Hachikubo A, Sakagami H, Minami H, Krylov A, Yamashita S, et al. Natural gas hydrates with locally different cage occupancies and hydration numbers in Lake Baikal. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS. 2009;10(5).
MLA
Kida, Masato et al. “Natural Gas Hydrates with Locally Different Cage Occupancies and Hydration Numbers in Lake Baikal.” GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 10.5 (2009): n. pag. Print.
@article{988821,
  abstract     = {Knowledge of cage occupancies and hydration numbers (n) of naturally occurring gas hydrate in a local environment is important for the improvement in global estimates of hydrate-bound natural gas. We report on local differences in cage occupancies and hydration number of gas hydrates from Lake Baikal. Natural gas hydrates of both structures I and II (sI and sII) and ranging in composition from pure CH4 to mixed gas hydrate containing up to 15% C2H6 are compared. The average hydration numbers are n = 6.1 for the sI CH4 hydrates recovered from the Malenky and Bolshoy mud volcanoes, n = 6.2 for the sI hydrates, containing 3–4% C2H6 recovered from the K-2 mud volcano, and n = 6.9 for the sII hydrate containing about 15% C2H6 recovered from the K-2 mud volcano. The differences in hydration number are due to the differences in the small cage occupancy of CH4 among the samples studied.},
  articleno    = {Q05003},
  author       = {Kida, Masato and Hachikubo, Akihiro and Sakagami, Hirotoshi and Minami, Hirotsugu and Krylov, Alexey and Yamashita, Satoshi and Takahashi, Nobuo and Shoji, Hitoshi and Khlystov, Oleg and Poort, Jeffrey and Narita, Hideo},
  issn         = {1525-2027},
  journal      = {GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS},
  keywords     = {ETHANE,GULF,Lake Baikal,cage occupancy,hydration number,methane,ethane,natural gas hydrate,METHANE,C-13 NMR,MEXICO},
  language     = {eng},
  number       = {5},
  pages        = {8},
  title        = {Natural gas hydrates with locally different cage occupancies and hydration numbers in Lake Baikal},
  url          = {http://dx.doi.org/10.1029/2009GC002473},
  volume       = {10},
  year         = {2009},
}

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