{"@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/1362825896075748224.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/jb091ib06p06432"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB091iB06p06432"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JB091iB06p06432"}}],"dc:title":[{"@value":"Downdip tensional earthquakes beneath the Tonga Arc: A double seismic zone?"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Characteristics of seismicity at intermediate depth beneath the Tonga arc are studied. Special attention is paid to newly identified downdip tensional events because the dominance of downdip compression has been known in this area. We reexamine the relatively shallow (<70 km) downdip tensional events, reported in the Harvard centroid moment tensor solutions, by modeling bodywave waveforms of World‐Wide Standard Seismograph Network seismograms and conclude that they are in fact intraplate downdip tensional events. Furthermore, these downdip tensional events are consistently located below and seaward of downdip compressional events and appear to constitute a double seismic zone. The result of a relative relocation technique applied to these earthquakes also supports this observation, which was originally based on routinely determined epicenters. The subducting slab beneath the Tonga arc has been considered as a prototype of a compressionally loaded slab. The existence of a double seismic zone in Tonga, therefore, would suggest that double seismic zones, located at intermediate depth in subducting slabs, are more common than previously thought.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825896075748224","@type":"Researcher","foaf:name":[{"@value":"Hitoshi Kawakatsu"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1986-05-10","prism:volume":"91","prism:number":"B6","prism:startingPage":"6432","prism:endingPage":"6440"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB091iB06p06432"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JB091iB06p06432"}],"createdAt":"2008-02-06","modifiedAt":"2023-09-22","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004235569500416","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Double seismic zone in the North Mariana region revealed by long-term ocean bottom array observation"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714791869811968","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic imaging of slab metamorphism and genesis of intermediate-depth intraslab earthquakes"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/jb091ib06p06432"},{"@type":"CROSSREF","@value":"10.1111/j.1365-246x.2010.04799.x_references_DOI_UqbRmTZot51dmyk8oNnVLRDqHMX"},{"@type":"CROSSREF","@value":"10.1186/s40645-017-0126-9_references_DOI_UqbRmTZot51dmyk8oNnVLRDqHMX"}]}