{"created":"2023-04-20T00:45:27.587214+00:00","id":2000419,"links":{},"metadata":{"_buckets":{"deposit":"9ef5b710-e975-4ae9-9c2b-74364328ad83"},"_deposit":{"created_by":15,"id":"2000419","owner":"15","owners":[15],"owners_ext":{"displayname":"北見工業大学学術機関リポジトリ（KIT-R）","username":"kitir"},"pid":{"revision_id":0,"type":"depid","value":"2000419"},"status":"published"},"_oai":{"id":"oai:kitami-it.repo.nii.ac.jp:02000419","sets":["1:87"]},"author_link":[],"item_1646810750418":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_3_biblio_info_186":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"4440","bibliographicPageStart":"4440","bibliographicVolumeNumber":"13","bibliographic_titles":[{"bibliographic_title":"Scientific Reports","bibliographic_titleLang":"en"}]}]},"item_3_description_184":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Molecular and stable isotope compositions of hydrate-bound gases collected from 59 hydrate-bearing \nsites between 2005 to 2019 in the southern and central sub-basins of Lake Baikal are reported. The \nδ2\nH of the hydrate-bound methane is distributed between− 310‰ and− 270‰, approximately 120‰ \nlower than its value in the marine environment, due to the diference in δ2\nH between the lake water \nand seawater. Hydrate-bound gases originate from microbial (primary and secondary), thermogenic, \nand mixed gas sources. Gas hydrates with microbial ethane (δ13C: − 60‰, δ2\nH: between− 310‰ \nand− 250‰) were retrieved at approximately one-third of the total sites, and their stable isotope \ncompositions were lower than those of thermogenic ethane (δ13C: − 25‰, δ2\nH: − 210‰). The low \nδ2\nH of ethane, which has rarely been reported, suggests for the frst time that lake water with low \nhydrogen isotope ratios afects the formation process of microbial ethane as well as methane. \nStructure II hydrates containing enclathrated methane and ethane were collected from eight sites. \nIn thermogenic gas, hydrocarbons heavier than ethane are biodegraded, resulting in a unique \nsystem of mixed methane-ethane gases. The decomposition and recrystallization of the hydrates \nthat enclathrate methane and ethane resulted in the formation of structure II hydrates due to the \nenrichment of ethane","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/s41598-023-31669-7","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":"Hirotoshi Sakagami","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"SatoshiYamashita","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":"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":"2023-04-20"}],"filename":"s41598-023-31669-7(1).pdf","filesize":[{"value":"1.4 MB"}],"format":"application/pdf","licensetype":"license_0","url":{"url":"https://kitami-it.repo.nii.ac.jp/record/2000419/files/s41598-023-31669-7(1).pdf"},"version_id":"3c098d8c-568f-4ace-b8fb-27acd91c19a5"}]},"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 and varieties of gases enclathrated in natural gas hydrates retrieved at Lake Baikal","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Characteristics and varieties of gases enclathrated in natural gas hydrates retrieved at Lake Baikal","subitem_title_language":"en"}]},"item_type_id":"3","owner":"15","path":["87"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-04-20"},"publish_date":"2023-04-20","publish_status":"0","recid":"2000419","relation_version_is_last":true,"title":["Characteristics and varieties of gases enclathrated in natural gas hydrates retrieved at Lake Baikal"],"weko_creator_id":"15","weko_shared_id":-1},"updated":"2023-04-20T00:53:48.884008+00:00"}