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Twenty hydrate-bearing sediment cores were retrieved, and methanestable isotopes of hydrate-bound gases (δ13C and δ2\nH of − 47.8‰ to− 44.0‰ V-PDB and− 280.5‰ \nto− 272.8‰ V-SMOW, respectively) indicated their thermogenic origin accompanied with secondary \nmicrobial methane. Powder X-ray difraction patterns of the crystals and molecular composition of \nthe hydrate-bound gases suggested that structure II crystals showed a high concentration of ethane \n(around 14% of hydrate-bound hydrocarbons), whereas structure I crystals showed a relatively low \nconcentration of ethane (2–5% of hydrate-bound hydrocarbons). These diferent crystallographic \nstructures comprised complicated layers in the sub-lacustrine sediment, suggesting that the gas \nhydrates partly dissociate, concentrate ethane and form structure II crystals. We concluded that a high \nconcentration of thermogenic ethane primarily controls the crystallographic structure of gas hydrates \nand that propane, iso-butane (2-methylpropane) and neopentane (2,2-dimethylpropane) are encaged \ninto crystals in the re-crystallisation process", "subitem_description_language": "en", "subitem_description_type": "Abstract"}]}, "item_3_publisher_212": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "nature springer", "subitem_publisher_language": "en"}]}, "item_3_relation_191": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "https://doi.org/10.1038/s41598-020-71410-2", "subitem_relation_type_select": "DOI"}}]}, "item_3_select_195": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher", "subitem_select_language": "en"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "open access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_abf2"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Akihiro Hachikubo", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Hirotsugu Minami", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Satoshi Yamashita", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Andrey Khabuev", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Alexey Krylov", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Gennadiy Kalmychkov", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Jefrey Poort", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Marc De Batist", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Alexandr Chenskiy", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Andrey Manakov", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Oleg Khlystov", "creatorNameLang": "en"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "date": [{"dateType": "Available", "dateValue": "2023-04-18"}], "download_preview_message": "", "file_order": 0, "filename": "s41598-020-71410-2(1).pdf", "filesize": [{"value": "8.2 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "application/pdf", "size": 8199999.999999999, "url": {"url": "https://kitami-it.repo.nii.ac.jp/record/2000417/files/s41598-020-71410-2(1).pdf"}, "version_id": "de23eeb2-22c7-453e-94b7-05f3c41b8076"}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Characteristics of hydrate-bound gas retrieved at the Kedr mud volcano (southern Lake Baikal)", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Characteristics of hydrate-bound gas retrieved at the Kedr mud volcano (southern Lake Baikal)", "subitem_title_language": "en"}]}, "item_type_id": "3", "owner": "15", "path": ["87"], "permalink_uri": "https://kitami-it.repo.nii.ac.jp/records/2000417", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-04-18"}, "publish_date": "2023-04-18", "publish_status": "0", "recid": "2000417", "relation": {}, "relation_version_is_last": true, "title": ["Characteristics of hydrate-bound gas retrieved at the Kedr mud volcano (southern Lake Baikal)"], "weko_shared_id": -1}
Characteristics of hydrate-bound gas retrieved at the Kedr mud volcano (southern Lake Baikal)
https://kitami-it.repo.nii.ac.jp/records/2000417
https://kitami-it.repo.nii.ac.jp/records/2000417f3e0fb4c-b788-4e96-8e77-e5d033d2cfbe
名前 / ファイル | ライセンス | アクション |
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s41598-020-71410-2(1).pdf (8.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||||||||||
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公開日 | 2023-04-18 | |||||||||||||||||||||||||||
タイトル | ||||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||||
タイトル | Characteristics of hydrate-bound gas retrieved at the Kedr mud volcano (southern Lake Baikal) | |||||||||||||||||||||||||||
言語 | ||||||||||||||||||||||||||||
言語 | eng | |||||||||||||||||||||||||||
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 |
Akihiro Hachikubo
× Akihiro Hachikubo
× Hirotsugu Minami
× Satoshi Yamashita
× Andrey Khabuev
× Alexey Krylov
× Gennadiy Kalmychkov
× Jefrey Poort
× Marc De Batist
× Alexandr Chenskiy
× Andrey Manakov
× Oleg Khlystov
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抄録 | ||||||||||||||||||||||||||||
内容記述タイプ | Abstract | |||||||||||||||||||||||||||
内容記述 | We reported the characteristics of hydrate-bound hydrocarbons in lake-bottom sediments at the Kedr mud volcano in Lake Baikal. Twenty hydrate-bearing sediment cores were retrieved, and methanestable isotopes of hydrate-bound gases (δ13C and δ2 H of − 47.8‰ to− 44.0‰ V-PDB and− 280.5‰ to− 272.8‰ V-SMOW, respectively) indicated their thermogenic origin accompanied with secondary microbial methane. Powder X-ray difraction patterns of the crystals and molecular composition of the hydrate-bound gases suggested that structure II crystals showed a high concentration of ethane (around 14% of hydrate-bound hydrocarbons), whereas structure I crystals showed a relatively low concentration of ethane (2–5% of hydrate-bound hydrocarbons). These diferent crystallographic structures comprised complicated layers in the sub-lacustrine sediment, suggesting that the gas hydrates partly dissociate, concentrate ethane and form structure II crystals. We concluded that a high concentration of thermogenic ethane primarily controls the crystallographic structure of gas hydrates and that propane, iso-butane (2-methylpropane) and neopentane (2,2-dimethylpropane) are encaged into crystals in the re-crystallisation process |
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言語 | en | |||||||||||||||||||||||||||
書誌情報 |
en : Scientific Reports 巻 10, p. 14747, 発行日 2020-09 |
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DOI | ||||||||||||||||||||||||||||
識別子タイプ | DOI | |||||||||||||||||||||||||||
関連識別子 | https://doi.org/10.1038/s41598-020-71410-2 | |||||||||||||||||||||||||||
出版者 | ||||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||||
出版者 | nature springer | |||||||||||||||||||||||||||
著者版フラグ | ||||||||||||||||||||||||||||
言語 | en | |||||||||||||||||||||||||||
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 |