{"@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/1360002216708238976.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2010gl045289"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2010GL045289"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2010GL045289"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Temporal change of phase velocity beneath Mt. Asama, Japan, inferred from coda wave interferometry"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>We estimated the temporal changes of phase velocity of Rayleigh waves extracted from cross correlations of S‐coda waves recorded at 12 stations around Mt. Asama, Japan. First, we extracted a Rayleigh wave by taking cross correlations of S‐coda waves for 315 regional earthquakes between October 2005 and February 2009. The dispersion curve of the Rayleigh wave was measured and compared with the one extracted from 18 days of ambient seismic noise. We found that both dispersion curves are consistent with each other, demonstrating the dominance of the fundamental Rayleigh waves. We then divided the entire time period into sub‐periods, each of which consists of 80 earthquakes, to measure the temporal changes at frequencies between 0.3 and 0.6 Hz. The result shows the reduction of phase velocity by 1.5 % and the subsequent recovery before the eruption of Mt. Asama in 2008.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380284919872307201","@type":"Researcher","foaf:name":[{"@value":"Y. Nagaoka"}],"jpcoar:affiliationName":[{"@value":"Earthquake Research Institute University of Tokyo  Tokyo Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380284919872307202","@type":"Researcher","foaf:name":[{"@value":"K. Nishida"}],"jpcoar:affiliationName":[{"@value":"Earthquake Research Institute University of Tokyo  Tokyo Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380284919872307200","@type":"Researcher","foaf:name":[{"@value":"Y. Aoki"}],"jpcoar:affiliationName":[{"@value":"Earthquake Research Institute University of Tokyo  Tokyo Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380284919872307072","@type":"Researcher","foaf:name":[{"@value":"M. Takeo"}],"jpcoar:affiliationName":[{"@value":"Earthquake Research Institute University of Tokyo  Tokyo Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00948276"},{"@type":"EISSN","@value":"19448007"}],"prism:publicationName":[{"@value":"Geophysical Research Letters"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2010-11","prism:volume":"37","prism:number":"22"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2010GL045289"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2010GL045289"}],"createdAt":"2010-11-23","modifiedAt":"2023-10-30","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782094726400","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"21740319"},{"@type":"JGN","@value":"JP21740319"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740319/"}],"notation":[{"@language":"ja","@value":"地震波干渉法による火山体地下構造の時間変化"},{"@language":"en","@value":"Temporal changes in the Earth's interior with seismic interferometry"}]},{"@id":"https://cir.nii.ac.jp/crid/1040000782119981312","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"22540431"},{"@type":"JGN","@value":"JP22540431"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540431/"}],"notation":[{"@language":"ja","@value":"微動・長周期地震・空振の統合的理解による火道内部状態の解明"},{"@language":"en","@value":"Research for internal state of a volcanic conduit based on volcanic tremors, long-period earthquakes, and infrasonic signals"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001202726476928","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Temporal changes of the crustal structure associated with the M6.1 earthquake on September 3, 1998, and the volcanic activity of Mount Iwate, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360002216709540480","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Temporal change in shear velocity and polarization anisotropy related to the 2011 M9.0 Tohoku‐Oki earthquake examined using KiK‐net vertical array data"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004229808479488","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic velocity changes concentrated at the shallow structure as inferred from correlation analyses of ambient noise during volcano deformation at Izu‐Oshima, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021396132738944","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic background level growth can reveal slowly developing long-term eruption precursors"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285705151917440","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A temporal change of shear wave anisotropy within the marine sedimentary layer associated with the 2011 Tohoku‐Oki earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292621114200064","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Time-Resolved Seismic Tomography Detects Magma Intrusions at Mount Etna"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292621443419776","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Magma supply path beneath Mt. 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