{"@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/1361137046527477632.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.jvolgeores.2016.02.008"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0377027316000524?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0377027316000524?httpAccept=text/plain"}}],"dc:title":[{"@value":"Structural evolution beneath Sakurajima Volcano, Japan, revealed through rounds of controlled seismic experiments"}],"description":[{"notation":[{"@value":"Abstract   Structural evolution beneath an active volcano is detected as the variation of seismic reflectivity through controlled seismic experiments, which is interpreted as being associated with discharging magma. The target of the present study is Sakurajima Volcano, which is one of the most active volcanoes in Japan. Six rounds of seismic experiments with controlled sources have been conducted annually at the volcano. Two seismic reflection profiles are obtained from the datasets for each successful round of experiments. The experiments reveal clear annual variation in seismic reflectivity at a depth of 6.2 km in the northeastern part of Sakurajima. The reflectivity is maximum in December 2009 upon the first intrusion of magma and decreases gradually until December 2013, which coincides with the inflation and deflation cycle of Sakurajima Volcano. Reflectivity variation occurred in the embedded clear reflector at depth. An evolving sandwiched structure in the intermediate layer is used as the reflector model. Lower-velocity magma embedded in the intermediate layer and its succeeding velocity increment explain the variation range of reflectivity. This is interpreted as a temperature decrease associated with discharging magma at depth. The present study describes a new approach for instantaneously sensing magma properties and for monitoring active volcanoes."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137046527477632","@type":"Researcher","foaf:name":[{"@value":"Tomoki Tsutsui"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137046527477633","@type":"Researcher","foaf:name":[{"@value":"Masato Iguchi"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137046527477504","@type":"Researcher","foaf:name":[{"@value":"Takeshi Tameguri"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137046527477634","@type":"Researcher","foaf:name":[{"@value":"Haruhisa Nakamichi"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"03770273"}],"prism:publicationName":[{"@value":"Journal of Volcanology and Geothermal Research"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2016-04","prism:volume":"315","prism:startingPage":"1","prism:endingPage":"14"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0377027316000524?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0377027316000524?httpAccept=text/plain"}],"createdAt":"2016-02-24","modifiedAt":"2022-06-30","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360567183245223040","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A Passive Estimation Method of Scattering and Intrinsic Absorption Parameters From Envelopes of Seismic Ambient Noise Cross‐Correlation Functions"}]},{"@id":"https://cir.nii.ac.jp/crid/1390283659861159680","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Integrated Study on Forecasting Volcanic Hazards of Sakurajima Volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1390292936929038080","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A Half-Year Long Observation at Sakurajima Volcano, Japan Using a Multi-Channeled Seismometer System with Phase-Shifted Optical Interferometry"}]},{"@id":"https://cir.nii.ac.jp/crid/1390845713072031744","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Feasibility Study on a Multi-Channeled Seismometer System with Phase-Shifted Optical Interferometry for Volcanological Observations"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433316890878336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Combined use of repeated active shots and ambient noise to detect temporal changes in seismic velocity : application to Sakurajima volcano, Japan"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1016/j.jvolgeores.2016.02.008"},{"@type":"OPENAIRE","@value":"doi_dedup___::9fa1098ae6f2262b40ca1f8280c40732"},{"@type":"CROSSREF","@value":"10.1029/2018gl080553_references_DOI_F73nRWCdNJZ9vA3x5L1znFAvd9j"},{"@type":"CROSSREF","@value":"10.20965/jdr.2022.p0670_references_DOI_F73nRWCdNJZ9vA3x5L1znFAvd9j"},{"@type":"CROSSREF","@value":"10.20965/jdr.2020.p0174_references_DOI_F73nRWCdNJZ9vA3x5L1znFAvd9j"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0613-7_references_DOI_F73nRWCdNJZ9vA3x5L1znFAvd9j"},{"@type":"CROSSREF","@value":"10.20965/jdr.2019.p0592_references_DOI_F73nRWCdNJZ9vA3x5L1znFAvd9j"}]}