{"@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/1390282681487833600.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.4294/jpe1952.35.449"}},{"identifier":{"@type":"NAID","@value":"130003963012"}}],"dc:title":[{"@language":"en","@value":"A model of plate convergence in Southwest Japan, inferred from leveling data associated with the 1946 Nankaido earthquake."},{"@value":"A model of plate convergence in southwest Japan, inferred from levelling data associated with the 1946 Nankaido earthquake"},{"@value":"A model of plate convergence in southwest Japan, inferred from leveling data associated with the 1946 Nanaimo Earthquake"}],"dc:language":"en","description":[{"type":"abstract","notation":[{"@language":"en","@value":"We propose a kinematic model of plate convergence at the Nankai trough, a convergent boundary between the Philippine Sea and Asian plates. By using a two-dimensional finite element technique, we take account of some structural inhomogeneities of the crust and upper mantle; the Philippine Sea plate is subducting into the asthenosphere underlying the anomalously thin Asian plate, where the plate boundary is coupled tightly in the shallower portion but loosely in the deeper. The model is inferred from preseismic, coseismic, and postseismic changes in surface elevation associated with the 1946 Nankaido earthquake (M=8.2). These changes are precisely estimated from the first-order leveling data (1890-1980) by using an epoch reduction method. The preseismic seaward tilt can be interpreted by a steady state subduction of the Philippine Sea plate with a convergence rate of 4.5 cm/yr. The coseismic surface elevation change is well explained by a low-angle thrust faulting with an average shear stress drop of 2.0 MPa; although the faulting propagates along a lower portion of the plate boundary, it extends upward to the earth's surface branching away from the boundary at a depth of 22 km. The postseismic surface movements are interpreted by superposition of the viscoelastic response to the coseismic faulting and the effect of the steady state subduction of the Philippine Sea plate. In particular, the viscoelastic response of the loosely coupled part of the plate boundary is the underlying mechanism of the postseismic uplift localized in the coseismically subsided region. If the steady state subduction of the Philippine Sea plate continues for 150 yr, the shear stress averaged over the fault plane is found to amount to 2.0 MPa, which is sufficiently high to cause a major subduction earthquake. Hence, we can predict that the cyclic process of stress accumulation and release at the Nankai trough can be repeated every 150 yr."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1030003658363840896","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10134165"},{"@type":"NRID","@value":"1000010134165"},{"@type":"NRID","@value":"9000000105496"},{"@type":"NRID","@value":"9000000519359"},{"@type":"NRID","@value":"9000254740509"},{"@type":"NRID","@value":"9000000649307"},{"@type":"NRID","@value":"9000004620902"},{"@type":"NRID","@value":"9000014232403"},{"@type":"NRID","@value":"9000254753276"},{"@type":"NRID","@value":"9000254740104"},{"@type":"NRID","@value":"9000000767646"},{"@type":"NRID","@value":"9000391401144"},{"@type":"NRID","@value":"9000000192351"},{"@type":"NRID","@value":"9000391402103"},{"@type":"NRID","@value":"9000391404267"},{"@type":"NRID","@value":"9000254263523"},{"@type":"NRID","@value":"9000014140005"},{"@type":"NRID","@value":"9000254754524"},{"@type":"NRID","@value":"9000254270787"},{"@type":"NRID","@value":"9000000093672"},{"@type":"NRID","@value":"9000254753671"},{"@type":"NRID","@value":"9000254740569"},{"@type":"NRID","@value":"9000255735789"},{"@type":"NRID","@value":"9000391400937"},{"@type":"NRID","@value":"9000256137689"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0204877"}],"foaf:name":[{"@language":"en","@value":"MIYASHITA Kaoru"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Department of Earth Sciences, Ibaraki University"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00223743"},{"@type":"LISSN","@value":"00223743"},{"@type":"EISSN","@value":"18842305"}],"prism:publicationName":[{"@language":"en","@value":"Journal of Physics of the Earth"},{"@language":"ja","@value":"Ｊｏｕｒｎａｌ　ｏｆ　Ｐｈｙｓｉｃｓ　ｏｆ　ｔｈｅ　Ｅａｒｔｈ"},{"@language":"en","@value":"J,Phys,Earth"},{"@language":"ja","@value":"Ｊ，Ｐｈｙｓ，Ｅａｒｔｈ"}],"dc:publisher":[{"@language":"en","@value":"The Seismological Society of Japan, The Volcanological Society of Japan, The Geodetic Society of Japan"},{"@language":"ja","@value":"公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会"}],"prism:publicationDate":"1987","prism:volume":"35","prism:number":"6","prism:startingPage":"449","prism:endingPage":"467"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","availableAt":"1987","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004236002955136","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Learning from crustal deformation associated with the M9 2011 Tohoku-oki earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1360009142900996864","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Effect of Ocean Fluid Changes on Pressure on the Seafloor: Ocean Assimilation Data Analysis on Warm-Core Rings off the Southeastern Coast of Hokkaido, Japan on an Interannual Timescale"}]},{"@id":"https://cir.nii.ac.jp/crid/1360294643736032512","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Bayesian Inversion for a Stress‐Driven Model of Afterslip and Viscoelastic Relaxation: Method and Application to Postseismic Deformation Following the 2011 <i>M</i><sub><i>W</i></sub> 9.0 Tohoku‐Oki Earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1361975843010088704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Geodetic Evidence of Time‐Dependent Viscoelastic Interseismic Deformation Driven by Megathrust Locking in the Southwest Japan Subduction Zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206508818048","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Probability of a great earthquake to recur in the Tokai district, Japan: reevaluation based on newly-developed paleoseismology, plate tectonics, tsunami study, micro-seismicity and geodetic measurements"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206511383168","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Three-dimensional viscoelastic interseismic deformation model for the Cascadia subduction zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1390025485948727296","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"1946年昭和南海地震に伴う高知県室津港の隆起量の再検討"},{"@language":"en","@value":"Re-examination of Coseismic Uplift for the 1946 Showa Nankai Earthquake at Murotsu Port, Kochi Prefecture"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681488552064","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Intermediate-term precursors of great subduction zone earthquakes"},{"@value":"Intermediate-term precursors of great subduction zone earthquakes: An application for predicting the Tokai earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1390870529360676096","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"東北沖地震の余効変動から知る東北日本弧地殻マントルのレオロジー特性"},{"@language":"en","@value":"Rheological Properties of the Crust and Upper Mantle in Northeast Japan Following Postseismic Deformation from the 2011 Tohoku-oki Earthquake"},{"@value":"東北沖地震の余効変動から知る東北日本孤地殻マントルのレオロジー特性"},{"@language":"ja-Kana","@value":"トウホクオキ ジシン ノ ヨコウヘンドウ カラ シル トウホク ニホンコチカク マントル ノ レオロジー トクセイ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842066368640","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Heterogeneous rheology of Japan subduction zone revealed by postseismic deformation of the 2011 Tohoku-oki earthquake"}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:0022066134"},{"@type":"CROSSREF","@value":"10.4294/jpe1952.35.449"},{"@type":"CIA","@value":"130003963012"},{"@type":"OPENAIRE","@value":"doi_dedup___::25ecab110ec4f54c2e7d200f21b3db45"},{"@type":"CROSSREF","@value":"10.1186/bf03352219_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.1130/ges01531.1_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.3389/feart.2021.600930_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.5026/jgeography.135.61_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.1186/bf03352386_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.1029/2020jb021620_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.1186/bf03352525_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.1186/s40645-023-00539-1_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.4294/zisin.2025-5_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"},{"@type":"CROSSREF","@value":"10.1029/2019gl085551_references_DOI_6wqN1b6hJGhcHdNb5cOu942Uu5g"}]}