{"@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/1360005518173098496.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2019gl085273"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1029/2019GL085273"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2019GL085273"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2019GL085273"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Lattice Thermal Conductivity of MgSiO<sub>3</sub> Postperovskite Under the Lowermost Mantle Conditions From Ab Initio Anharmonic Lattice Dynamics"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>The lattice thermal conductivity (<jats:styled-content><jats:italic>κ</jats:italic><jats:sub>lat</jats:sub></jats:styled-content>) of MgSiO<jats:sub>3</jats:sub> postperovskite (Mg‐PPv) under the lowermost mantle pressure (<jats:italic>P</jats:italic>) and temperature (<jats:italic>T</jats:italic>) conditions was calculated using density functional theory combining anharmonic lattice dynamics theory. The <jats:styled-content><jats:italic>κ</jats:italic><jats:sub>lat</jats:sub></jats:styled-content> of Mg‐PPv was found to be ~50% higher than that of MgSiO<jats:sub>3</jats:sub> bridgmanite (Mg‐Brg) owing to the larger phonon group velocity and lifetime. The lateral variation in the core‐mantle boundary heat flux (<jats:styled-content><jats:italic>q</jats:italic><jats:sub>CMB</jats:sub></jats:styled-content>) can be enhanced by the Brg‐PPv phase transition. We also found that the <jats:styled-content><jats:italic>κ</jats:italic><jats:sub>lat</jats:sub></jats:styled-content> along the <jats:italic>c</jats:italic> axis of Mg‐PPv is close to the conductivity of isotropic aggregate. This suggests that the effect of anisotropy in the <jats:styled-content><jats:italic>κ</jats:italic><jats:sub>lat</jats:sub></jats:styled-content> on <jats:styled-content><jats:italic>q</jats:italic><jats:sub>CMB</jats:sub></jats:styled-content> would be minor if the transversely isotropic aggregate with the <jats:italic>c</jats:italic> axis vertical alignment, a potential source of seismic anisotropy in the D″ layer, is developed.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380005518173098498","@type":"Researcher","foaf:name":[{"@value":"Haruhiko Dekura"}],"jpcoar:affiliationName":[{"@value":"Geodynamics Research Center Ehime University  Matsuyama 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