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Gas hydrates in Lake Baikal
https://kitami-it.repo.nii.ac.jp/records/8900
https://kitami-it.repo.nii.ac.jp/records/89002d2ac3d8-491f-49c5-a2ce-4d5eb0bba2b4
名前 / ファイル | ライセンス | アクション |
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Limnology and Freshwater Biology 2018 (1), 66-70 (483.3 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-01-20 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Gas hydrates in Lake Baikal | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Baikal | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | gas hydrates | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | mud volcanoes | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | carbonates | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
Khlystov, Oleg
× Khlystov, Oleg× Khabuev, Andrei V× MINAMI, Hirotsugu× Hachikubo, Akihiro× Krylov, Alexey |
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著者別名 | ||||||
姓名 | 南, 尚嗣 | |||||
言語 | ja | |||||
著者別名 | ||||||
姓 | 八久保 | |||||
姓 | 八久保 | |||||
名 | 晶弘 | |||||
名 | 晶弘 | |||||
姓名 | 八久保, 晶弘 | |||||
姓名 | 八久保, 晶弘 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Subsurface gas hydrates over all the area of their potential occurrence under the floor of Lake Baikal, the only freshwater body where they occur, have been sought and studied since 2000. Two of three known gas hydrates cubic structures (structure 1 biogenic methane hydrates and structure 2 biogenic methane and thermogenic ethane hydrates) have been found in the lake sediments. Large autogenic carbonaceous formations atypical for the lake have been discovered in the areas of gas hydrates occurrence. A new so-called “Baikal” mud volcanoes formation mechanism with shallow roots previously unknown in the seas is described. This mechanism is related to destruction of gas hydrates under their stability zone due to a tectonic activity and warm fluid income. The focus and source of the gas-saturated fluid are determined to be buried depositions of delta fronts, depocenters in the middle of the basins and subsurface ancient sedimentation masses at the eastern flank. The 2018 integrated geological and geophysical survey allowed to discover 54 hydrate-bearing structures represented by 26 mud volcanoes, 18 hydrate mounds, 9 seeps and 1 pockmark. Not only sedimentation masses of various age and many kilometers thick, but also the tectonic dislocation grid determine the distribution of these structures on the floor of Lake Baikal. The fluid pathways are formed through impaired vertical and gently inclined zones of the main rift faults and secondary faults as well as along permeable lithological sedimentation boundaries when the layers rise from the depocenters in the center of the basin to its flanks. |
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言語 | en | |||||
書誌情報 |
en : Limnology and Freshwater Biology 号 1, p. 66-70, 発行日 2018 |
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ISSN | ||||||
収録物識別子タイプ | EISSN | |||||
収録物識別子 | 2658-3518 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.31951/2658-3518-2018-A-1-66 | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |