{"_buckets": {"deposit": "2ff8ae32-aafc-4e08-a86e-ea27f7a181be"}, "_deposit": {"id": "2913", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2913"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00002913", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2022-11-21", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicPageStart": ":17967", "bibliographicVolumeNumber": "12", "bibliographic_titles": [{"bibliographic_title": "Scientific Reports", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Abstract\n\nWe repeatedly measured isotopic compositions of noble gases and CO\u003csub\u003e2\u003c/sub\u003e in volcanic gases sampled at six fumaroles around the Kusatsu-Shirane volcano (Japan) between 2014 and 2021 to detect variations reflecting recent volcanic activity. The synchronous increases in \u003csup\u003e3\u003c/sup\u003eHe/\u003csup\u003e4\u003c/sup\u003eHe at some fumaroles suggest an increase in magmatic gas supply since 2018. The increase in magmatic gas supply is also supported by the temporal variations in \u003csup\u003e3\u003c/sup\u003eHe/CO\u003csub\u003e2\u003c/sub\u003e ratios and carbon isotopic ratios of CO\u003csub\u003e2\u003c/sub\u003e. The \u003csup\u003e3\u003c/sup\u003eHe/\u003csup\u003e40\u003c/sup\u003eAr* ratios (\u003csup\u003e40\u003c/sup\u003eAr*: magmatic \u003csup\u003e40\u003c/sup\u003eAr) show significant increases in the period of high \u003csup\u003e3\u003c/sup\u003eHe/\u003csup\u003e4\u003c/sup\u003eHe ratios. The temporal variation in \u003csup\u003e3\u003c/sup\u003eHe/\u003csup\u003e40\u003c/sup\u003eAr* ratios may reflect changes in magma vesicularity. Therefore, the \u003csup\u003e3\u003c/sup\u003eHe/\u003csup\u003e40\u003c/sup\u003eAr* ratio of fumarolic gases is a useful parameter to monitor the current state of degassing magma, which is essential for understanding the deep process of volcanic unrest and may contribute to identifying precursors of a future eruption.?These results provide additional validation for the use of noble gas and carbon isotopic compositions of fumarolic gases for monitoring magmatic?hydrothermal systems.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "Springer Science and Business Media LLC", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1038/s41598-022-22280-3"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2045-2322", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tomoya Obase", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Hirochika Sumino", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kotaro Toyama", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kaori Kawana", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kohei Yamane", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Muga Yaguchi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Akihiko Terada", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Takeshi Ohba", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_title": "Monitoring of magmatic?hydrothermal system by noble gas and carbon isotopic compositions of fumarolic gases", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Monitoring of magmatic?hydrothermal system by noble gas and carbon isotopic compositions of fumarolic gases", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/2913", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "2913", "relation": {}, "relation_version_is_last": true, "title": ["Monitoring of magmatic?hydrothermal system by noble gas and carbon isotopic compositions of fumarolic gases"], "weko_shared_id": -1}