{"@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/1360848657272670592.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.jvolgeores.2010.05.011"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S037702731000171X?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S037702731000171X?httpAccept=text/plain"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Crustal structure beneath Aso Caldera, Southwest Japan, as derived from receiver function analysis"}],"description":[{"notation":[{"@value":"Abstract   Aso Volcano experienced a huge pyroclastic eruption 90 thousand years ago, and formed a large caldera (18 km × 25 km). In order to test the hypothesis of a magma body in the mid and lower crust that has been suggested geophysically and geochemically, we investigated seismic velocity discontinuities and velocity structure beneath Aso Caldera using receiver functions and a genetic algorithm inversion. We confirm the existence of the Moho at depths between 30 km and 35 km and a large velocity anomaly should exist in the deep portion of the crust beneath Aso Caldera, from imaging of receiver functions observed only at stations outside the caldera. As a result of a more detailed examination with GA inversion, a low velocity layer is detected at depths between 10 km and 24 km beneath the western part of the caldera. S-wave velocity of the layer is estimated to be 2.0–2.4 km/s. We estimate that the low velocity layer contains at most 15% melt or 30% aqueous fluid. The layer exists near the Conrad and at the same depths as the swarm of the low frequency earthquakes and a compressional and dilatational deformation source which are expected to be caused by fluid movement beneath the middle-eastern part of the caldera. Fluid contained in the layer might be related with huge pyroclastic eruptions of Aso Volcano."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380848657272670593","@type":"Researcher","foaf:name":[{"@value":"Yuki Abe"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848657272670596","@type":"Researcher","foaf:name":[{"@value":"Takahiro Ohkura"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848657272670595","@type":"Researcher","foaf:name":[{"@value":"Takuo Shibutani"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848657272670592","@type":"Researcher","foaf:name":[{"@value":"Kazuro Hirahara"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276177176832","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"70335230"},{"@type":"NRID","@value":"1000070335230"},{"@type":"ORCID","@value":"0000-0003-1276-5206"},{"@type":"CINII_AUTHOR_ID","@value":"DA19096275"},{"@type":"URI","@value":"https://ci.nii.ac.jp/author/DA19096275#entity"},{"@type":"URI","@value":"https://viaf.org/viaf/NII%7CDA19096275"},{"@type":"NRID","@value":"9000006863031"},{"@type":"NRID","@value":"9000000236962"},{"@type":"NRID","@value":"9000254754501"},{"@type":"NRID","@value":"9000253257228"},{"@type":"NRID","@value":"9000001756587"},{"@type":"NRID","@value":"9000254739184"},{"@type":"NRID","@value":"9000002244174"},{"@type":"NRID","@value":"9000414072563"},{"@type":"NRID","@value":"9000000519603"},{"@type":"NRID","@value":"9000018699073"},{"@type":"NRID","@value":"9000254262074"},{"@type":"NRID","@value":"9000254263190"},{"@type":"NRID","@value":"9000000462215"},{"@type":"NRID","@value":"9000000093565"},{"@type":"NRID","@value":"9000000195796"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0160954"}],"foaf:name":[{"@value":"Mamoru Kato"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"03770273"}],"prism:publicationName":[{"@value":"Journal of Volcanology and Geothermal Research"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2010-08","prism:volume":"195","prism:number":"1","prism:startingPage":"1","prism:endingPage":"12"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S037702731000171X?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S037702731000171X?httpAccept=text/plain"}],"createdAt":"2010-06-10","modifiedAt":"2021-10-29","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782034340608","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"20340119"},{"@type":"JGN","@value":"JP20340119"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20340119/"}],"notation":[{"@language":"ja","@value":"不連続面を含む日本列島下の3次元速度構造研究"},{"@language":"en","@value":"3-D seismic velocity structure with velocity discontinuities beneath the Japan Islands"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050565162986618752","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Shallow volcanic reservoirs and pathways beneath Aso caldera revealed using ambient seismic noise tomography"}]},{"@id":"https://cir.nii.ac.jp/crid/1050587981431089408","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Crustal magma pathway beneath Aso caldera inferred from three-dimensional electrical resistivity structure"},{"@value":"Crustal magma pathway beneath Aso caldera inferred from three‐dimensional electrical resistivity structure"},{"@value":"Crustal magma pathway beneath Aso caldera inferred from 3-D electrical resistivity structure"}]},{"@id":"https://cir.nii.ac.jp/crid/1050869456405311104","@type":"Article","resourceType":"学術雑誌論文(journal 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ソクセン"}]},{"@id":"https://cir.nii.ac.jp/crid/1572261551373734656","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Repeated large-scale eruptions from a single compositionally stratified magma chamber : An example from Aso volcano, Southwest Japan"},{"@value":"Repeated large-scale eruptions from a single compositional stratified magma chamber: an example from Aso volcano, Southwest Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842043298560","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Petrological characteristics and volatile content of magma of the 1979, 1989, and 2014 eruptions of Nakadake, Aso volcano, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317028471808","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Characteristics 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