{"@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/1361981469833973248.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2006jb004440"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2006JB004440"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2006JB004440"}}],"dc:title":[{"@value":"Seismic velocity reductions caused by the 2003 Tokachi‐Oki earthquake"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>We use four repeating earthquake sequences located near Hokkaido to identify velocity changes caused by the <jats:italic>M</jats:italic><jats:sub>w</jats:sub> 8.0 2003 Tokachi‐Oki earthquake. Using a moving window cross‐correlation technique, we identify delays in the arrival time of seismic waves that accumulate linearly with time into the seismogram. This behavior is indicative of multiple scattering within a medium where the seismic velocity has been reduced. For all of our earthquake‐receiver geometries, we find evidence of significant velocity reductions close to the receiver. The correlation of the size of the velocity reductions with both strong shaking and site characteristics suggests that these velocity reductions are caused by damage to near‐surface materials created by nonlinear strong ground motion. For earthquake/receiver geometries where the seismic waves cross the Tokachi‐Oki rupture zone, we identify particularly large reductions in velocity as a result of the earthquake. For these geometries, we believe that the rupture zone of the Tokachi‐Oki earthquake or the shallow crust above it represents a second region where seismic velocities are reduced as a result of the main shock.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381981469833973249","@type":"Researcher","foaf:name":[{"@value":"Justin L. Rubinstein"}],"jpcoar:affiliationName":[{"@value":"Department of Geophysics Stanford University  Stanford California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1381981469833973250","@type":"Researcher","foaf:name":[{"@value":"Naoki Uchida"}],"jpcoar:affiliationName":[{"@value":"Research Center for Prediction of Earthquakes and Volcanic Eruptions Tohoku University  Aoba‐ku Sendai Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1381981469833973248","@type":"Researcher","foaf:name":[{"@value":"Gregory C. Beroza"}],"jpcoar:affiliationName":[{"@value":"Department of Geophysics Stanford University  Stanford California USA"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2007-05","prism:volume":"112","prism:number":"B5","prism:startingPage":"B05315"},"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%2F2006JB004440"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2006JB004440"}],"createdAt":"2007-05-25","modifiedAt":"2023-10-12","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001335851881600","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Recovery process of shear wave velocities of volcanic soil in central Mashiki Town after the 2016 Kumamoto earthquake revealed by intermittent measurements of microtremor"},{"@value":"RETRACTED ARTICLE: Recovery process of shear wave velocities of volcanic soil in central Mashiki Town after the 2016 Kumamoto earthquake revealed by intermittent measurements of microtremor"}]},{"@id":"https://cir.nii.ac.jp/crid/1050867421578936320","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Softening and Recovery of Near‐Surface Layers During the 2024 M7.6 Noto Earthquake"}]},{"@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/1360283691685588224","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Observations of changes in waveform character induced by the 1999 M<sub>w</sub>7.6 Chi-Chi earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283692533077376","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Single-station cross-correlation analysis of ambient seismic noise: application to stations in the surroundings of the 2008 Iwate-Miyagi Nairiku earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285709566897664","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Variation in high-frequency wave radiation from small repeating earthquakes as revealed by cross-spectral analysis"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285711273633920","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Repeating Earthquakes"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848659520088960","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Depth-dependence of seismic velocity change associated with the 2011 Tohoku earthquake, Japan, revealed from repeating earthquake analysis and finite-difference wave propagation simulation"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2006jb004440"},{"@type":"OPENAIRE","@value":"doi_dedup___::6bcd8766d8bd244e132f0fc8da6cc0e4"},{"@type":"CROSSREF","@value":"10.1029/2012gl051342_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"},{"@type":"CROSSREF","@value":"10.1029/2011gl049841_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"},{"@type":"CROSSREF","@value":"10.1093/gji/ggu115_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"},{"@type":"CROSSREF","@value":"10.1093/gji/ggw313_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"},{"@type":"CROSSREF","@value":"10.1146/annurev-earth-053018-060119_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0657-8_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"},{"@type":"CROSSREF","@value":"10.1093/gji/ggv014_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"},{"@type":"CROSSREF","@value":"10.1029/2024jb029961_references_DOI_JqgDjNHFu45jxuP1mI8npcdpYYd"}]}