{"@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/1362825894390061440.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1785/0120000807"}},{"identifier":{"@type":"URI","@value":"https://syndication.highwire.org/content/doi/10.1785/0120000807"}},{"identifier":{"@type":"NAID","@value":"80015286312"}}],"dc:title":[{"@value":"Seismoelectromagnetic Effect Associated with the Izmit Earthquake and Its Aftershocks"}],"description":[{"notation":[{"@value":"In order to investigate the resistivity structure beneath the northern and the southern branches of the western part of the North Anatolian Fault Zone (NAFZ), which has been known as a seismic gap area, we started wideband magnetotelluric (MT) measurements on 27 July 1999, along a north-south profile crossing the northern branch near Izmit and the southern branch near Iznik. When the Izmit (Kocaeli) earthquake ( M w 7.4) occurred on 17 August 1999, MT fields were being measured at five sites, four of which happened to be located near the surface rupture zone associated with the mainshock, and large variations in the MT fields were observed in association with seismic waves. We propose motional electromagnetic induction in the electrically conducting crust, which vibrates under the Earth's magnetic field, as one of the possible generation mechanisms for such MT field variations. For more detailed studies of such a mechanism, we installed a wideband MT instrument and a three-component seismometer at two of the four sites on 16 September 1999 and made simultaneous measurements during several aftershocks. The estimate of the order of the magnitude of motional electromagnetic response, derived from the MT fields and ground motion observed during a large aftershock ( M 4.5), supports our claim that the seismo-dynamo effect is a plausible mechanism for variations in the MT fields associated with the seismic waves.  Manuscript received 31 July 2000."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1583668926525300096","@type":"Researcher","foaf:name":[{"@value":"M. Matsushima"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00371106"}],"prism:publicationName":[{"@value":"Bulletin of the Seismological Society of America"}],"dc:publisher":[{"@value":"Seismological Society of America (SSA)"}],"prism:publicationDate":"2002-02-01","prism:volume":"92","prism:number":"1","prism:startingPage":"350","prism:endingPage":"360"},"reviewed":"false","url":[{"@id":"https://syndication.highwire.org/content/doi/10.1785/0120000807"}],"createdAt":"2005-03-15","modifiedAt":"2017-11-03","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050282813281947264","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@value":"Spectral peaks in electric field at resonance frequencies for seismically excited motion of ions in the Earth's magnetic field"}]},{"@id":"https://cir.nii.ac.jp/crid/1050564285764177152","@type":"Article","resourceType":"学術雑誌論文(journal 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model for observed circular polarized electric fields coincident with the passage of large seismic waves"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567183382680448","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Rapid changes in the electrical state of the 1999 Izmit earthquake rupture zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1360865814743430400","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Revised set of equations describing the seismo-electromagnetic coupled wavefield in an ambient geomagnetic field"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204146159232","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Medium effect on the characteristics of the coupled seismic and electromagnetic 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earthquake of 26 May 2003 off Miyagi Prefecture, NE Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681490016000","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Seismic dynamo effects associated with the M7.1 earthquake of 26 May 2003 off Miyagi Prefecture and the M6.4 earthquake of 26 July 2003 in northern Miyagi Prefecture, NE Japan"},{"@value":"Seismic dynamo effects associated with the M7.0 earthquake of 26 May 2003 off Miyagi Prefecture and the M6.2 earthquake in northern Miyagi Prefecture, NE Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1520291854958775680","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@value":"Enhancement of co-seismic piezomagnetic signals near the edges of magnetization anomalies in the Earth's crust"},{"@language":"ja-Kana","@value":"Enhancement of co seismic piezomagnetic signals near the edges of magnetization anomalies in the Earth s 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