{"@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/1360004236002473216.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1130/g35948.1"}},{"identifier":{"@type":"URI","@value":"http://pubs.geoscienceworld.org/geology/article-pdf/43/2/155/3547610/155.pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Pelagic smectite as an important factor in tsunamigenic slip along the Japan Trench"}],"description":[{"notation":[{"@value":"The very large slip on the shallow portion of the subduction interface during the 2011 Tohoku-oki earthquake (M w  9.0) caused a huge tsunami along the northeast coast of Honshu, Japan. In order to elucidate the mechanics of such tsunamigenic slip, the Integrated Ocean Drilling Program Expedition 343 (Japan Trench Fast Drilling Project, JFAST), was carried out one year after the earthquake and succeeded in recovering rocks constituting the active plate boundary fault. Our mineralogical analyses using X-ray diffraction reveal that the shallow portion of the fault zone that caused the earthquake is significantly enriched in smectite compared to the surrounding sediments, which may be intimately linked to the tsunamigenic shallow faulting. For comparison, we also analyzed mineralogical features of incoming sediments just prior to subduction, recovered on the outer rise of the Japan Trench (Site 436, Deep Sea Drilling Project Leg 56), and found a characteristic smectite-rich horizon in the uppermost ∼5 m of the pelagic clay layer. This horizon should be mechanically weak and will become the future plate boundary fault, as observed in the JFAST cores. The smectite-rich deposits are broadly distributed in the northwestern Pacific Ocean, and may therefore potentially enhance conditions for large shallow slip during earthquakes that occur over a broad area of the Japan Trench plate boundary, which would result in large tsunamis for this region."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1420564276185296128","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"40568713"},{"@type":"NRID","@value":"1000040568713"},{"@type":"CINII_AUTHOR_ID","@value":"DA19440723"},{"@type":"URI","@value":"https://ci.nii.ac.jp/author/DA19440723#entity"},{"@type":"URI","@value":"https://viaf.org/viaf/NII%7CDA19440723"},{"@type":"NRID","@value":"9000391830112"},{"@type":"NRID","@value":"9000362802321"},{"@type":"NRID","@value":"9000376926092"},{"@type":"NRID","@value":"9000391835380"},{"@type":"NRID","@value":"9000391832741"},{"@type":"NRID","@value":"9000345295974"},{"@type":"NRID","@value":"9000327448692"},{"@type":"NRID","@value":"9000259288532"},{"@type":"NRID","@value":"9000347136250"},{"@type":"NRID","@value":"9000000931517"},{"@type":"NRID","@value":"9000016864058"},{"@type":"NRID","@value":"9000333924099"},{"@type":"NRID","@value":"9000387918854"},{"@type":"NRID","@value":"9000347136507"},{"@type":"NRID","@value":"9000257839582"},{"@type":"NRID","@value":"9000361706722"},{"@type":"NRID","@value":"9000254148280"},{"@type":"NRID","@value":"9000388528882"},{"@type":"NRID","@value":"9000345295980"},{"@type":"NRID","@value":"9000347083642"},{"@type":"NRID","@value":"9000414092419"},{"@type":"NRID","@value":"9000380969592"},{"@type":"NRID","@value":"9000283725975"},{"@type":"NRID","@value":"9000403551854"},{"@type":"NRID","@value":"9000256022316"},{"@type":"NRID","@value":"9000257729300"},{"@type":"NRID","@value":"9000391831315"},{"@type":"NRID","@value":"9000283726855"},{"@type":"NRID","@value":"9000003809378"},{"@type":"NRID","@value":"9000391831033"},{"@type":"NRID","@value":"9000347082992"},{"@type":"NRID","@value":"9000403550491"},{"@type":"NRID","@value":"9000272993662"},{"@type":"NRID","@value":"9000403551832"},{"@type":"NRID","@value":"9000347136193"},{"@type":"NRID","@value":"9000254262842"},{"@type":"NRID","@value":"9000254262264"},{"@type":"NRID","@value":"9000396139783"},{"@type":"NRID","@value":"9000347136395"},{"@type":"NRID","@value":"9000396139980"},{"@type":"NRID","@value":"9000403551801"},{"@type":"NRID","@value":"9000258415274"},{"@type":"NRID","@value":"9000283903689"},{"@type":"NRID","@value":"9000347083799"},{"@type":"NRID","@value":"9000347082757"},{"@type":"NRID","@value":"9000002107182"},{"@type":"NRID","@value":"9000314388072"},{"@type":"NRID","@value":"9000411999551"},{"@type":"NRID","@value":"9000283903338"},{"@type":"NRID","@value":"9000347136420"},{"@type":"NRID","@value":"9000347083820"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/jkameda"}],"foaf:name":[{"@value":"Jun 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Kimura"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"19432682"},{"@type":"PISSN","@value":"00917613"}],"prism:publicationName":[{"@value":"Geology"}],"dc:publisher":[{"@value":"Geological Society of America"}],"prism:publicationDate":"2015-02","prism:volume":"43","prism:number":"2","prism:startingPage":"155","prism:endingPage":"158"},"reviewed":"false","invited":"false","url":[{"@id":"http://pubs.geoscienceworld.org/geology/article-pdf/43/2/155/3547610/155.pdf"}],"createdAt":"2015-01-06","modifiedAt":"2020-06-05","project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782144521216","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"23244099"},{"@type":"JGN","@value":"JP23244099"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23244099/"}],"notation":[{"@language":"ja","@value":"沈み込み地震発生分岐断層の断層メカニズムとその進化"},{"@language":"en","@value":"Fault mechanism and evolution of the seismogenic splay fault in subduction zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1040000782286498816","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"26287124"},{"@type":"JGN","@value":"JP26287124"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-26287124/"}],"notation":[{"@language":"ja","@value":"炭質物ラマンスペクトルを用いた断層における摩擦発熱温度指標の構築"},{"@language":"en","@value":"Detection of frictional heating on faults using Raman spectra of carbonaceous material"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282256806030848","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"15H03746"},{"@type":"JGN","@value":"JP15H03746"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15H03746/"}],"notation":[{"@language":"ja","@value":"断層内の非晶質珪酸塩の構造と成因"},{"@language":"en","@value":"Formation process and local structure of amorphous aluminosilicates in fault zone"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282257174478592","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"24340125"},{"@type":"JGN","@value":"JP24340125"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24340125/"}],"notation":[{"@language":"ja","@value":"沈み込みプレート境界における有効摩擦係数の地震サイクルに伴う時空間変化"},{"@language":"en","@value":"Time-spacio change in effective friction coefficient with seismic cycle in subduction zones"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282257255926784","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"26109005"},{"@type":"JGN","@value":"JP26109005"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-26109005/"}],"notation":[{"@language":"ja","@value":"岩石変形実験による地殻の力学物性の解明：流体の影響"},{"@language":"en","@value":"Exploring the mechanical properties of crustal materials through rock deformation experiments: Influence of geofluids"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282257255938944","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"26109004"},{"@type":"JGN","@value":"JP26109004"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-26109004/"}],"notation":[{"@language":"ja","@value":"観察・観測による断層帯の発達過程とミクロからマクロまでの地殻構造の解明"},{"@language":"en","@value":"Investigation of fault development and crustal structure from microscopic to macroscopic scales based on geological and seismic observations"}]},{"@id":"https://cir.nii.ac.jp/crid/1040282257414120192","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"13J04960"},{"@type":"JGN","@value":"JP13J04960"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13J04960/"}],"notation":[{"@language":"ja","@value":"内陸断層との比較研究に基づくプレート境界断層の物質・力学的キャラクタリゼーション"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050001202560213760","@type":"Article","resourceType":"学術雑誌論文(journal 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