{"@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/1360004229803715456.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/2015gl063286"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2015GL063286"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2015GL063286"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Very low frequency earthquakes in Cascadia migrate with tremor"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>We find very low frequency earthquakes (VLFEs) in Cascadia under northern Washington during 2011 episodic tremor and slip event. VLFEs are rich in low‐frequency energy (20–50 s) and depleted in higher frequencies (higher than 1 Hz) compared to local earthquakes. Based on a grid search centroid moment tensor inversion, we find that VLFEs are located near the plate interface in the zone where tremor and slow slip are observed. In addition, they migrate along strike with tremor activity. Their moment tensor solutions show double‐couple sources with shallow thrust mechanisms, consistent with shear slip at the plate interface. Their magnitude ranges between <jats:italic>Mw</jats:italic> 3.3 and 3.7. Seismic moment released by a single VLFE is comparable to the total cumulative moment released by tremor activity during an entire episodic tremor and slip event. The VLFEs contribute more seismic moment to this episodic tremor and slip event than cumulative tremor activity and indicate a higher seismic efficiency of slow earthquakes in Cascadia than previously thought. Spatiotemporal correlation of VLFE and tremor activity suggests that they are the results of the same physical processes governing slow earthquakes.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004229803715588","@type":"Researcher","foaf:name":[{"@value":"Abhijit Ghosh"}],"jpcoar:affiliationName":[{"@value":"Department of Earth Sciences University of California  Riverside California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380016864379128576","@type":"Researcher","foaf:name":[{"@value":"Eduardo Huesca‐Pérez"}],"jpcoar:affiliationName":[{"@value":"Department of Earth Sciences University of California  Riverside California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004229803715466","@type":"Researcher","foaf:name":[{"@value":"Emily Brodsky"}],"jpcoar:affiliationName":[{"@value":"Department of Earth and Planetary Sciences University of California  Santa Cruz California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276172946176","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"30435581"},{"@type":"NRID","@value":"1000030435581"},{"@type":"ORCID","@value":"0000-0001-9484-9539"},{"@type":"CINII_AUTHOR_ID","@value":"DA17240097"},{"@type":"URI","@value":"https://ci.nii.ac.jp/author/DA17240097#entity"},{"@type":"URI","@value":"https://viaf.org/viaf/NII%7CDA17240097"},{"@type":"NRID","@value":"9000002327811"},{"@type":"NRID","@value":"9000254263259"},{"@type":"NRID","@value":"9000254741331"},{"@type":"NRID","@value":"9000001755219"},{"@type":"NRID","@value":"9000001756269"},{"@type":"NRID","@value":"9000413695854"},{"@type":"NRID","@value":"9000254263251"},{"@type":"NRID","@value":"9000412206699"},{"@type":"NRID","@value":"9000283726644"},{"@type":"NRID","@value":"9000258283045"},{"@type":"NRID","@value":"9000380434917"},{"@type":"NRID","@value":"9000410949101"},{"@type":"NRID","@value":"9000016847657"},{"@type":"NRID","@value":"9000347135736"},{"@type":"NRID","@value":"9000391404808"},{"@type":"NRID","@value":"9000347166246"},{"@type":"NRID","@value":"9000006894368"},{"@type":"NRID","@value":"9000347135626"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0134551"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/YoshihiroIto"}],"foaf:name":[{"@value":"Yoshihiro Ito"}],"jpcoar:affiliationName":[{"@value":"Disaster Prevention Research Institute Kyoto University  Kyoto Japan"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00948276"},{"@type":"EISSN","@value":"19448007"}],"prism:publicationName":[{"@value":"Geophysical Research Letters"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2015-05-07","prism:volume":"42","prism:number":"9","prism:startingPage":"3228","prism:endingPage":"3232"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2015GL063286"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2015GL063286"}],"createdAt":"2015-04-02","modifiedAt":"2023-09-16","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=VLFE","dc:title":"VLFE"},{"@id":"https://cir.nii.ac.jp/all?q=150","dc:title":"150"},{"@id":"https://cir.nii.ac.jp/all?q=Cascadia","dc:title":"Cascadia"},{"@id":"https://cir.nii.ac.jp/all?q=tremor","dc:title":"tremor"},{"@id":"https://cir.nii.ac.jp/all?q=slow%20earthquakes","dc:title":"slow earthquakes"},{"@id":"https://cir.nii.ac.jp/all?q=Meteorology%20%26%20Atmospheric%20Sciences","dc:title":"Meteorology & Atmospheric Sciences"},{"@id":"https://cir.nii.ac.jp/all?q=very%20low%20frequency%20earthquakes","dc:title":"very low frequency earthquakes"},{"@id":"https://cir.nii.ac.jp/all?q=ETS","dc:title":"ETS"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040282257259871104","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"26257206"},{"@type":"JGN","@value":"JP26257206"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26257206/"}],"notation":[{"@language":"ja","@value":"沈み込み帯浅部のスロースリップはトラフ軸まで到達するか？"},{"@language":"en","@value":"Slow slip to the trench  ?"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001339107234432","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Connecting slow earthquakes to huge earthquakes"},{"@value":"Connecting slow earthquakes to large 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