{"@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/1361418520644982016.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1130/g20261.2"}}],"dc:title":[{"@value":"High-resolution subducting-slab structure beneath northern Honshu, Japan, revealed by double-difference tomography"}],"description":[{"notation":[{"@value":"The high-resolution seismic velocity structure of the subducting slab beneath northern Honshu, Japan, has been obtained by double-difference tomography, capitalizing on the existence of two planes of seismicity. The upper plane lies in the region with average to high Vp/Vs ratios (1.72–1.85), which may correspond to the transformations of metabasalt and metagabbro to blueschist. The lower plane is associated with very low Vp/Vs ratios (1.6–1.7), in sharp contrast with high Vp/Vs ratios (∼1.8–1.85) in the region between the two planes. These features may be explained by forsterite-enstatite-H2O formation from serpentine dehydration in the lower plane and partial hydration of the region between the two planes. Our results provide direct constraints for petrologic modeling of the subducting slab."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381418520644981888","@type":"Researcher","foaf:name":[{"@value":"Haijiang Zhang"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520644982016","@type":"Researcher","foaf:name":[{"@value":"Clifford H. Thurber"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520644982017","@type":"Researcher","foaf:name":[{"@value":"David Shelly"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520644981890","@type":"Researcher","foaf:name":[{"@value":"Satoshi Ide"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520644981891","@type":"Researcher","foaf:name":[{"@value":"Gregory C. Beroza"}]},{"@id":"https://cir.nii.ac.jp/crid/1381418520644981889","@type":"Researcher","foaf:name":[{"@value":"Akira Hasegawa"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00917613"}],"prism:publicationName":[{"@value":"Geology"}],"dc:publisher":[{"@value":"Geological Society of America"}],"prism:publicationDate":"2004","prism:volume":"32","prism:number":"4","prism:startingPage":"361"},"reviewed":"false","createdAt":"2004-03-24","modifiedAt":"2020-04-28","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001202726472832","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic evidence for thermally-controlled dehydration reaction in subducting oceanic crust"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232173783296","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Tomographic imaging of hydrated crust and mantle in the subducting Pacific slab beneath Hokkaido, Japan: Evidence for dehydration embrittlement as a cause of intraslab earthquakes"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004240202138112","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Thermal structure and intermediate-depth seismicity in the Tohoku-Hokkaido subduction zones"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182088993664","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"P-wave attenuation in the Pacific slab beneath northeastern Japan revealed by the spectral ratio of intraslab earthquakes"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567183244421248","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Roles of Hydrous Lithospheric Mantle in Deep Water Transportation and 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