{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360021390584371200.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.3389/feart.2023.1137416"}},{"identifier":{"@type":"URI","@value":"https://www.frontiersin.org/articles/10.3389/feart.2023.1137416/full"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Genesis and interaction of magmas at Nishinoshima volcano in the Ogasawara arc, western Pacific: new insights from submarine deposits of the 2020 explosive eruptions"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Sudden changes of eruption styles and magma compositions at arc volcanoes are enigmatic processes. Nishinoshima volcano, western Pacific, has had historical eruptions in 1973–1974 and from 2013 on and off to the present day. These eruptions were characterized by effusive Strombolian eruptions of andesite magmas until mid-June 2020, when they suddenly transitioned to violent explosive Strombolian eruptions that produced tephra fallout over a wide area. To understand this transition, we conducted marine surveys and sampling of the extensive submarine deposits of the tephra fallout. Our new data demonstrate that the full compositional range of the 2020 eruptions spans from basalt to dacite. We present evidence for magma mixing of newly injected basalt with andesite magmas. Nishinoshima consists of an andesitic main edifice surrounded by basaltic knolls: previous studies have shown that Nishinoshima andesite compositions can be generated by olivine fractionation of primary andesitic magmas that result from partial melting of hydrous mantle at relatively low pressures under the thin crust of the Ogasawara arc; knoll basalt compositions can be generated by partial melting of mantle at greater depths and were interpreted as older events of the volcano. We show that basalt magmas could have been generated throughout the entire history of Nishinoshima. In addition, we show that andesites from Nishinoshima and nearby Nishinoshima-Minami Knoll, which are only ∼8 km apart, have distinct subduction components. Together, these data improve our understanding of the diverse primary magmas responsible for the construction and continuing eruptive activity of an active island arc volcano.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420001326209251200","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"40293336"},{"@type":"NRID","@value":"1000040293336"},{"@type":"CINII_AUTHOR_ID","@value":"DB00229610"},{"@type":"URI","@value":"https://ci.nii.ac.jp/author/DB00229610#entity"},{"@type":"URI","@value":"https://viaf.org/viaf/NII%7CDB00229610"},{"@type":"NRID","@value":"9000004600049"},{"@type":"NRID","@value":"9000254181925"},{"@type":"NRID","@value":"9000018802541"},{"@type":"NRID","@value":"9000021354760"},{"@type":"NRID","@value":"9000245917863"},{"@type":"NRID","@value":"9000318558800"},{"@type":"NRID","@value":"9000253675401"},{"@type":"NRID","@value":"9000004594416"},{"@type":"NRID","@value":"9000018582215"},{"@type":"NRID","@value":"9000258407234"},{"@type":"NRID","@value":"9000405026975"},{"@type":"NRID","@value":"9000258413389"},{"@type":"NRID","@value":"9000258433501"},{"@type":"NRID","@value":"9000018987178"},{"@type":"NRID","@value":"9000245918103"},{"@type":"NRID","@value":"9000258406400"},{"@type":"NRID","@value":"9000283727023"},{"@type":"NRID","@value":"9000404487730"},{"@type":"NRID","@value":"9000018987219"},{"@type":"NRID","@value":"9000008038561"},{"@type":"NRID","@value":"9000020201985"},{"@type":"NRID","@value":"9000020133458"},{"@type":"NRID","@value":"9000258414044"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0209038"}],"foaf:name":[{"@value":"Yoshihiko Tamura"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390584371203","@type":"Researcher","foaf:name":[{"@value":"Tomoki Sato"}]},{"@id":"https://cir.nii.ac.jp/crid/1420001326214915328","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"90356444"},{"@type":"NRID","@value":"1000090356444"},{"@type":"ORCID","@value":"0000-0001-7223-0284"},{"@type":"NRID","@value":"9000391784963"},{"@type":"NRID","@value":"9000245917864"},{"@type":"NRID","@value":"9000254146592"},{"@type":"NRID","@value":"9000018698525"},{"@type":"NRID","@value":"9000406353699"},{"@type":"NRID","@value":"9000000787064"},{"@type":"NRID","@value":"9000405026954"},{"@type":"NRID","@value":"9000316224620"},{"@type":"NRID","@value":"9000000745850"},{"@type":"NRID","@value":"9000287287026"},{"@type":"NRID","@value":"9000240185813"},{"@type":"NRID","@value":"9000018654897"},{"@type":"NRID","@value":"9000413779518"},{"@type":"NRID","@value":"9000016416070"},{"@type":"NRID","@value":"9000017395791"},{"@type":"NRID","@value":"9000309997983"},{"@type":"NRID","@value":"9000000193787"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/90356444"}],"foaf:name":[{"@value":"Osamu Ishizuka"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390584371329","@type":"Researcher","foaf:name":[{"@value":"Iona M. McIntosh"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390584371216","@type":"Researcher","foaf:name":[{"@value":"Kenta Yoshida"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390584371331","@type":"Researcher","foaf:name":[{"@value":"Fukashi Maeno"}]},{"@id":"https://cir.nii.ac.jp/crid/1380021390584371328","@type":"Researcher","foaf:name":[{"@value":"Qing Chang"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"22966463"}],"prism:publicationName":[{"@value":"Frontiers in Earth Science"}],"dc:publisher":[{"@value":"Frontiers Media SA"}],"prism:publicationDate":"2023-05-31","prism:volume":"11"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["https://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://www.frontiersin.org/articles/10.3389/feart.2023.1137416/full"}],"createdAt":"2023-05-31","modifiedAt":"2023-05-31","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=basalt","dc:title":"basalt"},{"@id":"https://cir.nii.ac.jp/all?q=andesite","dc:title":"andesite"},{"@id":"https://cir.nii.ac.jp/all?q=Science","dc:title":"Science"},{"@id":"https://cir.nii.ac.jp/all?q=Q","dc:title":"Q"},{"@id":"https://cir.nii.ac.jp/all?q=new%20continent","dc:title":"new continent"},{"@id":"https://cir.nii.ac.jp/all?q=violent%20eruption","dc:title":"violent eruption"},{"@id":"https://cir.nii.ac.jp/all?q=mission%20immiscible","dc:title":"mission immiscible"},{"@id":"https://cir.nii.ac.jp/all?q=magma%20mixing","dc:title":"magma mixing"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040018351901152128","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"23K20892"},{"@type":"JGN","@value":"JP23K20892"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K20892/"}],"notation":[{"@language":"ja","@value":"海洋プレートの沈み込み開始と沈み込み帯の誕生ーその要因とプロセスの解明ー"},{"@language":"en","@value":"Subduction initiation of oceanic plate and birth of subduction zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1040299826877865984","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"23K20899"},{"@type":"JGN","@value":"JP23K20899"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23K20899/"}],"notation":[{"@language":"ja","@value":"西之島はカルデラ噴火に移行するのか"},{"@language":"en","@value":"Will Nishinoshima make a caldera-forming eruption?"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050583402767112960","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Advent of Continents: A New Hypothesis"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004235528290688","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Nishinoshima volcano in the Ogasawara Arc: New continent from the ocean?"}]},{"@id":"https://cir.nii.ac.jp/crid/1360013168817652608","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Variety of the drift pumice clasts from the 2021 <scp>Fukutoku‐Oka‐no‐Ba</scp> eruption, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360013168867454848","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Intermittent Growth of a Newly-Born Volcanic Island and Its Feeding System Revealed by Geological and Geochemical Monitoring 2013–2020, Nishinoshima, Ogasawara, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021395487107456","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"7. 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