{"@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/1363388845469026432.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2012gl051979"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2012GL051979"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2012GL051979"}}],"dc:title":[{"@value":"Time‐lapse change in anisotropy in Japan's near surface after the 2011 Tohoku‐Oki earthquake"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>We apply seismic interferometry to strong‐motion records to detect the near‐surface (i.e., an upper few hundred meters deep) change in anisotropy caused by the M<jats:sub><jats:italic>W</jats:italic></jats:sub>9.0 Tohoku‐Oki earthquake on 11 March 2011. We show that the earthquake increased the difference between fast and slow shear‐wave velocities arising from shear‐wave splitting in most parts of northeastern Japan, but it did not significantly change fast shear‐wave polarization directions in the near surface. Through monitoring of anisotropy and shear‐wave velocity, we find that the changes in anisotropy and velocity partially recover with time; they are, however, still different from the pre‐event values after nine months. The comparison of the spatial distribution between changes in anisotropy and velocity indicates the changes in anisotropy and velocity are generally correlated, especially in the northeastern Honshu (the main island in Japan). The change in the largest principal stress direction weakly correlates with the change in anisotropy.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383388845469026433","@type":"Researcher","foaf:name":[{"@value":"Nori Nakata"}]},{"@id":"https://cir.nii.ac.jp/crid/1383388845469026432","@type":"Researcher","foaf:name":[{"@value":"Roel Snieder"}]}],"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":"2012-06","prism:volume":"39","prism:number":"11","prism:startingPage":"L11313"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2012GL051979"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2012GL051979"}],"createdAt":"2012-05-22","modifiedAt":"2023-10-30","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050025031477434368","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ground uplift related to permeability enhancement following the 2011 Tohoku earthquake in the Kanto Plain, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283692532997504","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Time-lapse changes of P- and S-wave velocities and shear wave splitting in the first year after the 2011 Tohoku earthquake, Japan: shallow subsurface"}]},{"@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/1360285708268951552","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Shallow Temporal Changes in <i>S</i> Wave Velocity and Polarization Anisotropy Associated With the 2016 Kumamoto Earthquake Sequence, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861295372482560","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Short‐Term and Long‐Term Variations in Seismic Velocity at Shallow Depths of the Overriding Plate West of the Japan Trench"}]},{"@id":"https://cir.nii.ac.jp/crid/1360869856031080832","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Anisotropic structure at shallow depths across the Japan Trench"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679284097920","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"大地震に伴う地下構造変化とその回復過程について"},{"@language":"en","@value":"A Review of Subsurface Structure Changes Associated with Large Earthquakes and Its Recovery Process"},{"@language":"ja-Kana","@value":"ダイジシン ニ トモナウ チカ コウゾウ ヘンカ ト ソノ カイフク カテイ ニ ツイテ"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2012gl051979"},{"@type":"CROSSREF","@value":"10.1093/gji/ggs080_references_DOI_AgjbSEZnKqN2Og5UdnCsg8w0Yjz"},{"@type":"CROSSREF","@value":"10.1002/jgrb.50074_references_DOI_AgjbSEZnKqN2Og5UdnCsg8w0Yjz"},{"@type":"CROSSREF","@value":"10.1029/2018jb016261_references_DOI_AgjbSEZnKqN2Og5UdnCsg8w0Yjz"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0666-7_references_DOI_AgjbSEZnKqN2Og5UdnCsg8w0Yjz"},{"@type":"CROSSREF","@value":"10.4294/zisin.2016-19_references_DOI_AgjbSEZnKqN2Og5UdnCsg8w0Yjz"},{"@type":"CROSSREF","@value":"10.1029/2022jb025262_references_DOI_AgjbSEZnKqN2Og5UdnCsg8w0Yjz"},{"@type":"CROSSREF","@value":"10.1186/s40623-024-02059-8_references_DOI_AgjbSEZnKqN2Og5UdnCsg8w0Yjz"}]}