{"@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/1361137046074507904.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2001jb000430"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001JB000430"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JB000430"}}],"dc:title":[{"@value":"Elastohydrodynamic lubrication of faults"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The heat flow paradox provides evidence that a dynamic weakening mechanism may be important in understanding fault friction and rupture. We present here a specific model for dynamic velocity weakening that uses the mechanics of well‐studied industrial bearings to explain fault zone processes. An elevated fluid pressure is generated in a thin film of viscous fluid that is sheared between nearly parallel surface. This lubrication pressure supports part of the load, therefore reducing the normal stress and associated friction across the gap. The pressure also elastically deforms the wall rock. The model is parameterized using the Sommerfeld number, which is a measure of the lubrication pressure normalized by the lithostatic load. For typical values of the material properties, slip distance and velocity, the Sommerfeld number suggests that lubrication is an important process. If the lubrication length scales as the slip distance in an earthquake, the frictional stress during dynamically lubricated large earthquakes is 30% less than the friction with only hydrostatic pore pressure. Elastohydrodynamic lubrication also predicts a decrease in high‐frequency (>1 Hz) radiation above a critical slip distance of a few meters. This prediction is well matched by the strong motion data from the 1999 Taiwan earthquake. The observed 2 orders of magnitude variation in scaled radiated energy between small (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> < 4) and large earthquakes (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> > 6) is also predicted by the lubrication model.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137046074507904","@type":"Researcher","foaf:name":[{"@value":"Emily E. Brodsky"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137046074507905","@type":"Researcher","foaf:name":[{"@value":"Hiroo Kanamori"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Solid Earth"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2001-08-10","prism:volume":"106","prism:number":"B8","prism:startingPage":"16357","prism:endingPage":"16374"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001JB000430"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JB000430"}],"createdAt":"2004-02-03","modifiedAt":"2023-09-23","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050564285570396928","@type":"Article","resourceType":"学術雑誌論文(journal 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earthquakes"},{"@language":"ja-Kana","@value":"diversity of the physics of earthquakes"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679279750016","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Weakening Mechanisms of Rocks at Fast Slip Rates: Example from the Cases without Frictional Melting"},{"@language":"ja","@value":"高速すべり時における岩石の摩擦強度弱化の機構"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680294989312","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"台湾チェルンプ断層掘削における成果"},{"@language":"en","@value":"Scientific Result of material analyses of the Taiwan Chelungpu fault Drilling Project (TCDP)"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681213889280","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Overview of scientific results of the deep drilling project of the Chelungpu Fault, upon which the 1999 Chi-Chi (Taiwan) earthquake occurred: Main findings and future research"},{"@language":"ja","@value":"1999年台湾集集地震を引き起こしたチェルンプ断層の深部掘削の成果概要－明らかになってきた断層岩の物質科学と今後の課題－"},{"@language":"ja-Kana","@value":"1999ネン タイワンシュウシュウ ジシン オ ヒキオコシタ チェルンプ ダンソウ ノ シンブ クッサク ノ セイカ ガイヨウ アキラカ ニ ナッテ キタ ダンソウガン ノ ブッシツ カガク ト コンゴ ノ カダイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681489244288","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Comment on “Earthquake cycles and physical modeling of the process leading up to a large earthquake”"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942188138368","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Multiple damage zone structure of an exhumed seismogenic megasplay fault in a subduction zone : a study from the Nobeoka Thrust Drilling 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