{"@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/1362825894473534464.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2002jb002175"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2002JB002175"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2002JB002175"}},{"identifier":{"@type":"NAID","@value":"30013331625"}}],"dc:title":[{"@value":"Newly imaged shape of the deep seismic zone within the subducting Pacific plate beneath the Hokkaido corner, Japan‐Kurile arc‐arc junction"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The geometry of the deep seismic zone associated with the subducting Pacific plate beneath the North American plate in the Hokkaido corner, Japan‐Kurile arc‐arc junction has been investigated based on the hypocenters accurately relocated by a dense local seismographic network with three‐dimensional <jats:italic>P</jats:italic> and <jats:italic>S</jats:italic> wave velocity structures. The model suggests that the lateral changes in the dip of the subduction zone are more rapid than previously believed. We found that the deep seismic zone in the Pacific plate dips at 20° to 30° on the side of the Japan arc, the dip angle increased in a narrow region around 143°–144°E by 10° to 20°, and the dip was 40° to 50° on the side of the Kurile arc. In the transitional zone around 143°–144°E an unusual distribution of microearthquakes has been discovered within the Pacific plate, which was located on a near‐vertical plane with an area of 50 × 100 km<jats:sup>2</jats:sup> with strike that was perpendicular to the Kurile Trench axis. This feature was named the Tokachi‐Oki slab‐cracking zone. We suggest that this is a slab‐cracking zone torn by the extensional stress due to the rapid lateral changes in the dip of the subduction zone. The slab‐cracking zone may possibly grow into the large disruption or tear of the slab in the future.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825894473534464","@type":"Researcher","foaf:name":[{"@value":"Kei Katsumata"}],"jpcoar:affiliationName":[{"@value":"Institute of Seismology and Volcanology Hokkaido University  Sapporo Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861291076383232","@type":"Researcher","foaf:name":[{"@value":"Naoto Wada"}],"jpcoar:affiliationName":[{"@value":"Institute of Seismology and Volcanology Hokkaido University  Sapporo Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380861291076383233","@type":"Researcher","foaf:name":[{"@value":"Minoru Kasahara"}],"jpcoar:affiliationName":[{"@value":"Institute of Seismology and Volcanology Hokkaido University  Sapporo Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid 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structure beneath the Hokkaido corner, northern Japan: Arc‐arc collision and origins of the 1970 M 6.7 Hidaka and 1982 M 7.1 Urakawa‐oki earthquakes"}]},{"@id":"https://cir.nii.ac.jp/crid/1050564285794447232","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Characteristics of postseismic deformation following the 2003 Tokachi-oki earthquake and estimation of the viscoelastic structure in Hokkaido, northern Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360002218190815872","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Tomographic inversion of the peak delay times to reveal random velocity fluctuations in the lithosphere: method and application to northeastern Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232173783296","@type":"Article","resourceType":"学術雑誌論文(journal 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waves"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206513200000","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Spatial distribution for moment tensor solutions of the 2003 Tokachi-oki earthquake (MJMA = 8.0) and aftershocks"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206513211264","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Joint inversion of strong motion and geodetic data for the source process of the 2003 Tokachi-oki, Hokkaido, earthquake"},{"@value":"Joint inversion of strong motion and geodetic data for the source process of the 2003 Tokachi‐oki, Hokkaido, earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679282122624","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"津波波形解析から推定される1971年8月2日十勝沖地震 (スラブ内地震) の断層モデルとその解釈"},{"@language":"en","@value":"Fault Parameters of the 1971 Tokachi-oki Earthquake, the Intra-plate Event, Estimated from the Tsunami Wavef rom Analysis and the Tectonic Interpretation of the Event"},{"@language":"ja-Kana","@value":"ツナミ ハケイ カイセキ カラ スイテイ サレル 1971ネン 8ガツ 2ニチ トカチオキ ジシン スラブ ナイ ジシン ノ ダンソウ モデル ト ソノ カイシャク"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679282195456","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"応力テンソルインバージョン法により推定された2003年十勝沖地震震源域付近の太平洋プレート内部の主応力パターン"},{"@language":"en","@value":"Stress Pattern within the Pacific Plate around the Focal Area of the 2003 Tokachi-oki Earthquake Revealed by a Stress Tensor Inversion Method"},{"@language":"ja-Kana","@value":"オウリョク テンソルインバージョンホウ ニ ヨリ スイテイ サレタ 2003ネン トカチオキ ジシン シンゲンイキ フキン ノ タイヘイヨウ プレート ナイブ ノ シュ オウリョク パターン"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681488665600","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Temporal changes in state of stress in the Tokachi Oki area after the 2003 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