{"@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/1362262945922605696.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1126/science.286.5440.752"}},{"identifier":{"@type":"URI","@value":"https://www.science.org/doi/pdf/10.1126/science.286.5440.752"}},{"identifier":{"@type":"PMID","@value":"10531056"}}],"dc:title":[{"@value":"Asymmetric Electrical Structure in the Mantle Beneath the East Pacific Rise at 17°S"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The magnetotelluric component of the Mantle Electromagnetic and Tomography (MELT) Experiment measured the electrical resistivity structure of the mantle beneath the fast-spreading southern East Pacific Rise (EPR). The data reveal an asymmetric resistivity structure, with lower resistivity to the west of the ridge. The uppermost 100 kilometers of mantle immediately to the east of the ridge is consistent with a dry olivine resistivity structure indicating a mantle depleted of melt and volatiles. Mantle resistivities to the west of the ridge are consistent with a low-melt fraction (about 1 to 2 percent interconnected melt) distributed over a broad region and extending to depths of about 150 kilometers. The asymmetry in resistivity structure may be the result of asymmetric spreading rates and a westward migration of the ridge axis and suggests distinct styles of melt formation and delivery in the mantle beneath the two plates.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004055529038219","@type":"Researcher","foaf:name":[{"@value":"R. L. Evans"}],"jpcoar:affiliationName":[{"@value":"Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605568","@type":"Researcher","foaf:name":[{"@value":"P. Tarits"}],"jpcoar:affiliationName":[{"@value":"UMR CNRS 6538, Universite Bretagne Occidentale, Brest, France."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605699","@type":"Researcher","foaf:name":[{"@value":"A. D. Chave"}],"jpcoar:affiliationName":[{"@value":"Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605696","@type":"Researcher","foaf:name":[{"@value":"A. White"}],"jpcoar:affiliationName":[{"@value":"Flinders University, Adelaide, South Australia 5042, Australia."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605698","@type":"Researcher","foaf:name":[{"@value":"G. Heinson"}],"jpcoar:affiliationName":[{"@value":"Flinders University, Adelaide, South Australia 5042, Australia."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605569","@type":"Researcher","foaf:name":[{"@value":"J. H. Filloux"}],"jpcoar:affiliationName":[{"@value":"Scripps Institution of Oceanography, La Jolla, CA 92093, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605703","@type":"Researcher","foaf:name":[{"@value":"H. Toh"}],"jpcoar:affiliationName":[{"@value":"Toyama University, Toyama 930-8555, Japan."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605697","@type":"Researcher","foaf:name":[{"@value":"N. Seama"}],"jpcoar:affiliationName":[{"@value":"Chiba University, Chiba, Japan."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605701","@type":"Researcher","foaf:name":[{"@value":"H. Utada"}],"jpcoar:affiliationName":[{"@value":"Earthquake Research Institute, University of Tokyo, Tokyo 113, Japan."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605570","@type":"Researcher","foaf:name":[{"@value":"J. R. Booker"}],"jpcoar:affiliationName":[{"@value":"Geophysics Program AK-50, University of Washington, Seattle, WA 98195, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1382262945922605702","@type":"Researcher","foaf:name":[{"@value":"M. J. Unsworth"}],"jpcoar:affiliationName":[{"@value":"Geophysics Program AK-50, University of Washington, Seattle, WA 98195, USA."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00368075"},{"@type":"EISSN","@value":"10959203"}],"prism:publicationName":[{"@value":"Science"}],"dc:publisher":[{"@value":"American Association for the Advancement of Science (AAAS)"}],"prism:publicationDate":"1999-10-22","prism:volume":"286","prism:number":"5440","prism:startingPage":"752","prism:endingPage":"756"},"reviewed":"false","url":[{"@id":"https://www.science.org/doi/pdf/10.1126/science.286.5440.752"}],"createdAt":"2002-07-27","modifiedAt":"2024-01-13","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360002216804036096","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Ultralow viscosity of carbonate melts at high pressures"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232051165056","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Experimental determination of the viscosity of Na2CO3 melt between 1.7 and 4.6 GPa at 1200–1700 °C: Implications for the rheology of carbonatite magmas in the Earth's upper mantle"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232523501056","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Electrical conductivity of the oceanic asthenosphere and its interpretation based on laboratory measurements"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182088706304","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Development of A-type olivine fabric in water-rich deep upper mantle"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848661227085696","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic and Electrical Signatures of the Lithosphere–Asthenosphere System of the Normal Oceanic Mantle"}]},{"@id":"https://cir.nii.ac.jp/crid/1360868136300337664","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Application of the fast and robust bootstrap method to the uncertainty analysis of the magnetotelluric transfer function"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204147960064","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Electromagnetic exploration of the oceanic mantle"},{"@value":"Review electromagnetic exploration of the oceanic mantle"}]},{"@id":"https://cir.nii.ac.jp/crid/2050307417161653504","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Approximate treatment of seafloor topographic effects in three-dimensional marine magnetotelluric inversion"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842051751936","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Validity of the dispersion relations in magnetotellurics. 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