{"created":"2022-01-28T07:18:33.918283+00:00","id":2008840,"links":{},"metadata":{"_buckets":{"deposit":"358cf3e7-9286-4d98-869a-709f291b379b"},"_deposit":{"id":"2008840","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2008840"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02008840","sets":["1642838163960:1642838338003","1642838403551:1642838406414"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"Origin of methane-rich natural gas at the West Pacific convergent plate boundary","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Sano, Yuji","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kinoshita, Naoya","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kagoshima, Takanori","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Takahata, Naoto","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Sakata, Susumu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Toki, Tomohiro","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Kawagucci, Shinsuke","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Waseda, Amane","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Lan, Tefang","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Wen, Hsinyi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Chen, Ai-Ti","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Lee, Hsiaofen","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Yang, Tsanyao F.","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Zheng, Guodong","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Tomonaga, Yama","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Roulleau, Emilie","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Pinti, Daniele L.","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186499011":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_1522650717957":"en","subitem_1522651041219":"Creative Commons Attribution 4.0 International License"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"Methane emission from the geosphere is generally characterized by a radiocarbon-free signature and might preserve information on the deep carbon cycle on Earth. Here we report a clear relationship between the origin of methane-rich natural gases and the geodynamic setting of the West Pacific convergent plate boundary. Natural gases in the frontal arc basin (South Kanto gas fields, Northeast Japan) show a typical microbial signature with light carbon isotopes, high CH4/C2H6 and CH4/3He ratios. In the Akita-Niigata region \u2013 which corresponds to the slope stretching from the volcanic-arc to the back-arc \u2013a thermogenic signature characterize the gases, with prevalence of heavy carbon isotopes, low CH4/C2H6 and CH4/3He ratios. Natural gases from mud volcanoes in South Taiwan at the collision zone show heavy carbon isotopes, middle CH4/C2H6 ratios and low CH4/3He ratios. On the other hand, those from the Tokara Islands situated on the volcanic front of Southwest Japan show the heaviest carbon isotopes, middle CH4/C2H6 ratios and the lowest CH4/3He ratios. The observed geochemical signatures of natural gases are clearly explained by a mixing of microbial, thermogenic and abiotic methane. An increasing contribution of abiotic methane towards more tectonically active regions of the plate boundary is suggested.","subitem_description_type":"Other"},{"subitem_description":"\u8ad6\u6587","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"en","subitem_1522300316516":"Nature Publishing Group"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"eng"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/37627"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"2045-2322"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"en","subitem_1522650091861":"Scientific Reports"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicVolumeNumber":"7"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617353299429":{"attribute_name":"Relation","attribute_value_mlt":[{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"https://doi.org/10.1016/j.bbrc.2016.12.03610.1038/s41598-017-15959-5"}},{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"info:doi/10.1038/s41598-017-15959-5"}}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"s41598-017-15959-5.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2008840/files/s41598-017-15959-5.pdf"},"version_id":"c69618e0-3a53-430e-a3a9-0b70582c5171"}]},"item_title":"Origin of methane-rich natural gas at the West Pacific convergent plate boundary","item_type_id":"15","owner":"1","path":["1642838338003","1642838406414"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2018-01-30"},"publish_date":"2018-01-30","publish_status":"0","recid":"2008840","relation_version_is_last":true,"title":["Origin of methane-rich natural gas at the West Pacific convergent plate boundary"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-02-15T01:33:44.081437+00:00"}