{"@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/1363670320362362496.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/jb092ib08p07963"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB092iB08p07963"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JB092iB08p07963"}}],"dc:title":[{"@value":"Stress rotation during the Coalinga Aftershock Sequence"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>This study considers spatial and temporal changes of the stress regime during the 1983 Coalinga aftershock sequence. In both cases the observed changes manifest themselves as rotations of the most compressive stress axis. Inversion of 165 <jats:italic>M</jats:italic>≥3 aftershocks shows that in the southern aftershock zone the azimuth of the most compressional stress axis is oriented 24°E of north, while in the northern and central zones it is oriented 51°E of north. Statistical analysis by use of non‐parametric bootstrap resampling shows that this rotation is significant at above the 95% confidence level. Inverting the focal mechanisms of 122 <jats:italic>M</jats:italic> ≥3 aftershocks in the central and northern aftershock zones reveals a rotation of the principal stress axes during the first 500 days after the main shock. The compressional axis rotates from an azimuth of 62°E of north to 47°E of north. Statistical analysis by use of nonparametric bootstrap resampling shows that this rotation is just significantly different from zero at the 95% confidence level, subject to the assumption that 80% of the fault planes can be correctly picked from the two nodal planes. As the number of fault planes picked correctly varies from 50% (random choices) to 100% the significance of the rotation varies from 87% to 98%. Further investigation fails to find the signature of the stress changes predicted by dislocation theory in the focal mechanisms of the aftershocks. Active folds in the area suggest that the pre‐main shock stress regime had a compressional axis with a NE‐SW orientation. Thus the rotation during the aftershock sequence is thought to be a rebound from a stress anomaly induced by the main shock. This stress anomaly may be causally related to the occurrence of the aftershocks.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670320362362496","@type":"Researcher","foaf:name":[{"@value":"Andrew Jay Michael"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"1987-07-10","prism:volume":"92","prism:number":"B8","prism:startingPage":"7963","prism:endingPage":"7979"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2FJB092iB08p07963"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/JB092iB08p07963"}],"createdAt":"2008-02-06","modifiedAt":"2023-09-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001338207702144","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Which is heterogeneous, stress or strength? An estimation from high-density seismic observations"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182476884224","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Stress accumulation process in and around the Atotsugawa fault, central Japan, estimated from focal mechanism analysis"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182476936704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Extremely weak fault planes: An estimate of focal mechanisms from stationary seismic activity in the San'in district, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360572092600238848","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Estimation of the heterogeneity of stress fields using misfit angles in focal mechanisms"}]},{"@id":"https://cir.nii.ac.jp/crid/1360580230588188288","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Spatial change in differential stress magnitudes around the source fault before intraplate earthquakes"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865815509426432","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Space Geodetic Insights to the Dramatic Stress Rotation Induced by the February 2023 Turkey‐Syria Earthquake Doublet"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204304367488","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"On an Activated Normal-Faulting Earthquake Sequence below the Southern Extremity of Lake Kasumigaura, Central Japan, after the 2011 Off the Pacific Coast of Tohoku Earthquake"},{"@language":"ja","@value":"2011年東北地方太平洋沖地震の発生後に活発化した霞ヶ浦南端直下の正断層型地震活動"}]},{"@id":"https://cir.nii.ac.jp/crid/1390004222631015424","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Heterogeneity of Stress Field in NE Japan and Implications for Fault Strength and Earthquake Occurrence Mechanism"},{"@language":"ja","@value":"近年の地震観測により得られた東北日本の応力場の不均質性と断層強度および地震発生機構の関係"},{"@language":"ja-Kana","@value":"キンネン ノ ジシン カンソク ニ ヨリ エラレタ トウホク ニホン ノ オウリョクジョウ ノ フキンシツセイ ト ダンソウ キョウド オヨビ ジシン ハッセイ キコウ ノ カンケイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681488802944","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Off-fault aftershocks of the 2005West Off Fukuoka Prefecture Earthquake: Reactivation of a structural boundary?"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/jb092ib08p07963"},{"@type":"CROSSREF","@value":"10.5026/jgeography.129.451_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.1016/j.tecto.2017.12.007_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.1016/j.tecto.2016.05.013_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.1186/bf03351918_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0730-3_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.1016/j.tecto.2020.228553_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.1093/gji/ggac521_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.4294/zisin.66.47_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"},{"@type":"CROSSREF","@value":"10.1029/2023gl107788_references_DOI_6kxp1fxpAHCshnDhBzNWTETnGtj"}]}