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Geochemistry of Pore Waters from Gas Hydrate-bearing Sediment Cores Retrieved at the Sea of Okhotsk

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Title
Geochemistry of Pore Waters from Gas Hydrate-bearing Sediment Cores Retrieved at the Sea of Okhotsk
Other Titles
오호츠크해의 가스수화물을 포함한 퇴적물 코어의 공극수의 지구화학
Authors
Hitoshi Tomaru
Nobuo Takahashi
Kinji Hyakutake
Hirotsugu Minami
Tatiana Matveeva
Jeffrey Poort
Anatoly Obzhirov
Jin, Young Keun
Hitoshi Shoji
Akihiri Hachikubo
Hirotoshi Sakagami
Alexey Krylov
Masato Kida
Keywords
methane hydrates; marine sediments; pore water; ions; stable isotopes; gas seepage structures
Issue Date
2009
Citation
Hitoshi Tomaru, et al. 2009. "Geochemistry of Pore Waters from Gas Hydrate-bearing Sediment Cores Retrieved at the Sea of Okhotsk". Journal of Geography, 118(1): 194-206.
Abstract
Differences in seepage activity among three gas-seepage structures including hydrate-bearing sites at the Derugin Basin, NE Sakhalin Island, Russia were investigated. Chemical analyses of pore-water geochemistry, water-content distribution and stable isotopes were conducted to describe the complicated geochemical seepage environments involving a flux of free-gas and/or gas-saturated water. Traces of deep ascending fluid were not found in the hydrate-containing Hieroglyph seep, but were suggested in the lower parts of cores from the CHAOS and Kitami seeps based on the presence of abnormally heavy deuterium.
URI
http://repository.kopri.re.kr/handle/201206/6554
DOI
http://dx.doi.org/10.5026/jgeography.118.194
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