{"created":"2023-03-30T09:21:01.285450+00:00","id":2913,"links":{},"metadata":{"_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<sub>2</sub> 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 <sup>3</sup>He/<sup>4</sup>He 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 <sup>3</sup>He/CO<sub>2</sub> ratios and carbon isotopic ratios of CO<sub>2</sub>. The <sup>3</sup>He/<sup>40</sup>Ar* ratios (<sup>40</sup>Ar*: magmatic <sup>40</sup>Ar) show significant increases in the period of high <sup>3</sup>He/<sup>4</sup>He ratios. The temporal variation in <sup>3</sup>He/<sup>40</sup>Ar* ratios may reflect changes in magma vesicularity. Therefore, the <sup>3</sup>He/<sup>40</sup>Ar* 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"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-30"},"publish_date":"2023-03-30","publish_status":"0","recid":"2913","relation_version_is_last":true,"title":["Monitoring of magmatic?hydrothermal system by noble gas and carbon isotopic compositions of fumarolic gases"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-07T10:26:06.456121+00:00"}