{"@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/1361137046013937792.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/j.pepi.2004.03.009"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0031920104001657?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S0031920104001657?httpAccept=text/plain"}},{"identifier":{"@type":"NAID","@value":"30003879793"}}],"dc:title":[{"@value":"Crustal heterogeneity in the 2000 western Tottori earthquake region: effect of fluids from slab dehydration"}],"description":[{"notation":[{"@value":"Abstract   In order to understand the generating mechanism of the western Tottori earthquake ( M  7.3) that occurred on 6 October 2000 in southwest Japan, we determined high-resolution 3D P- and S-wave velocity and Poisson’s ratio structures in the epicentral area. We used 17,542 P- and 13,831 S-wave high-quality arrival times from 721 Tottori aftershocks and other local microearthquakes recorded by the dense High-Sensitivity Seismic Network (Hi-net) installed recently on the Japan Islands. Significant variations of up to 4% for seismic velocity and 9% for Poisson’s ratio are revealed in the aftershock area. Areas with large coseismic slips and high aftershock activity are associated with high P-wave velocity ( V  P ), high Poisson’s ratio and high electrical conductivity, which may represent strong and competent parts of the fault zone containing fluids. The western Tottori mainshock hypocenter is located in a boundary zone where both velocity and Poisson’s ratio change drastically. Both P- and S-wave velocities are slower in the lower crust under the mainshock hypocenter, and low-frequency microearthquakes were detected within the slow anomalies around the Moho discontinuity before and after the occurrence of the 2000 western Tottori earthquake. These results and other related evidence suggest that the strong crustal heterogeneity in the western Tottori source area is associated with fluids and arc magma under nearby the Daisen volcano, which may have influenced the nucleation and rupture process of the western Tottori earthquake. The arc magma and fluids are thought to result from the dehydration reactions of the subducting Philippine Sea slab in this region. These results suggest that the nucleation of shallow earthquakes could be controlled by a deep structure and regime and so it is important to study the deeper crust and upper mantle structure and processes for clarifying the generating mechanism of large crustal earthquakes."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137046013937794","@type":"Researcher","foaf:name":[{"@value":"Dapeng Zhao"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137046013937793","@type":"Researcher","foaf:name":[{"@value":"H Tani"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137046013937792","@type":"Researcher","foaf:name":[{"@value":"O.P Mishra"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00319201"}],"prism:publicationName":[{"@value":"Physics of the Earth and Planetary Interiors"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2004-07","prism:volume":"145","prism:number":"1-4","prism:startingPage":"161","prism:endingPage":"177"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S0031920104001657?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S0031920104001657?httpAccept=text/plain"}],"createdAt":"2004-05-30","modifiedAt":"2023-04-28","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002215916398336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Tottori earthquakes and Daisen volcano: Effects of fluids, slab melting and hot mantle upwelling"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232523426560","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Large heterogeneous structure beneath the Atotsugawa Fault, central Japan, revealed by seismic refraction and reflection experiments"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004234590179584","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Tomography of the source zone of the 2016 South Taiwan earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283691021203840","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Imaging of magma intrusions beneath Harrat Al-Madinah in Saudi Arabia"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182476923136","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Receiver function images of the distorted Philippine Sea slab contact with the continental crust: Implications for generation of the 1891 Nobi earthquake (Mj 8.0)"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204230834816","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"新生代日本列島の火山活動とマントルダイナミクス"},{"@language":"en","@value":"Cenozoic Volcanisms and Mantle Dynamics in Japan"},{"@value":"新生代日本列島の火山活動とマントルダイナミクス--この10年における進展"},{"@language":"ja-Kana","@value":"シンセイダイ ニホン レットウ ノ カザン カツドウ ト マントルダイナミクス コノ 10ネン ニ オケル シンテン"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204302989184","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Tomographic Evidence of Slab Subduction and Arc Magmatism in the Japan Subduction Zone"},{"@language":"ja","@value":"地震波トモグラフィでみたスラブの沈み込みと島弧マグマ活動"},{"@language":"ja-Kana","@value":"ジシンハ トモグラフィ デ ミタ スラブ ノ シズミ コミ ト トウコ マグマ カツドウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206511584896","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Strong S-wave anisotropy in the aftershock region of the 2000 Tottori-ken Seibu, Japan, earthquake (MW6.6)"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206511885696","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Crustal heterogeneity around the Nagamachi-Rifu fault, northeastern Japan, as inferred from travel-time tomography"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679205577856","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"On-going Regional Metamorphism beneath the Japanese Islands"},{"@value":"日本列島直下で現在進行中の広域変成作用"},{"@language":"ja-Kana","@value":"ニホン レットウ チョッカ デ ゲンザイ シンコウ チュウ ノ コウイキ ヘンセイ 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the 2011 Tohoku-Oki Earthquake"},{"@language":"ja","@value":"地殻深部から上昇する流体が地震の発生に及ぼす影響の研究"},{"@value":"地殻深部から上昇する流体が地震の発生に及ぼす影響の研究 : 2011年東北地方太平洋沖地震に誘発された地震活動による拘束"},{"@language":"ja-Kana","@value":"チカク シンブ カラ ジョウショウ スル リュウタイ ガ ジシン ノ ハッセイ ニ オヨボス エイキョウ ノ ケンキュウ : 2011ネン トウホク チホウ タイヘイヨウオキ ジシン ニ ユウハツ サレタ ジシン カツドウ ニ ヨル コウソク"}]},{"@id":"https://cir.nii.ac.jp/crid/2050870367115069824","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Hypocenter distribution and heterogeneous seismic velocity structure in and around the focal area of the 2008 Iwate-Miyagi Nairiku Earthquake, NE Japan : possible seismological evidence for a fluid driven compressional inversion earthquake"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317024402560","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Identification of a nascent tectonic boundary in the San-in area, 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