{"created":"2025-02-27T05:33:25.592173+00:00","id":2015997,"links":{},"metadata":{"_buckets":{"deposit":"65ae3fe4-51b3-4580-bf05-f5523dae197e"},"_deposit":{"created_by":41,"id":"2015997","owner":"41","owners":[41],"pid":{"revision_id":0,"type":"depid","value":"2015997"},"status":"published"},"_oai":{"id":"oai:hiroshima.repo.nii.ac.jp:02015997","sets":["1727147343679:1730442506844:1730442507624"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_title":"Time rate of atmospheric 3He/4He change: An attempt to measure anthropogenic CO2 flux","subitem_title_language":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"SANO, Yuji","creatorNameLang":"en"}],"familyNames":[{"familyName":"SANO","familyNameLang":"en"}],"givenNames":[{"givenName":"Yuji","givenNameLang":"en"}]}]},"item_1617186476635":{"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_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"Taking into account recently published data, the author assesses possible time rate change of atmospheric 3He/4He ratio. Three independent estimations are considered and the common value of the 3He/4He variations is proposed. The most reliable decreasing rate of atmospheric 3He/4He ratio, 0.032 ± 0.013 %/year is consistent with the anthropogenic emission of crustal helium of 3.1x1011 mol/year estimated by the statistics of global fossil fuel exploitation and the probable carbon/helium ratio in the fuel. Because of the inert chemistry of helium, atmospheric 3He/4He change may provide a marker against which to calibrate the absolute flux and retention of anthropogenic CO2 in the atmosphere.","subitem_description_language":"en"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_publisher":"HIROSHIMA UNIVERSITY"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_1617186819068":{"attribute_name":"identifier_registration","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15027/53123","subitem_identifier_reg_type":"JaLC"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_source_identifier":"0075-4374","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"AA00706718","subitem_source_identifier_type":"NCID"}]},"item_1617187024783":{"attribute_name":"開始ページ","attribute_value_mlt":[{"subitem_start_page":"597"}]},"item_1617187056579":{"attribute_name":"bibliographic_information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1993-07-30","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"602","bibliographicPageStart":"597","bibliographicVolumeNumber":"9","bibliographic_titles":[{"bibliographic_title":"Journal of science of the Hiroshima University. Series C, Geology and mineralogy"},{"bibliographic_title":"Journal of science of the Hiroshima University. Series C, Geology and mineralogy"}]}]},"item_1617258105262":{"attribute_name":"item_1617258105262","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"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_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2023-03-18"}],"displaytype":"simple","filename":"JSHUC_9-4_597.pdf","filesize":[{"value":"542.0 KB"}],"mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://hiroshima.repo.nii.ac.jp/record/2015997/files/JSHUC_9-4_597.pdf"},"version_id":"bbe1dd12-c3b6-4f6f-b7d2-b72c91314701"}]},"item_1732771732025":{"attribute_name":"旧ID","attribute_value":"53123"},"item_title":"Time rate of atmospheric 3He/4He change: An attempt to measure anthropogenic CO2 flux","item_type_id":"40003","owner":"41","path":["1730442507624"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-18"},"publish_date":"2023-03-18","publish_status":"0","recid":"2015997","relation_version_is_last":true,"title":["Time rate of atmospheric 3He/4He change: An attempt to measure anthropogenic CO2 flux"],"weko_creator_id":"41","weko_shared_id":-1},"updated":"2025-06-02T04:31:07.892078+00:00"}