{"@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/1363670320449579008.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2000gl011930"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2000GL011930"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2000GL011930"}},{"identifier":{"@type":"NAID","@value":"30013368218"}}],"dc:title":[{"@value":"Ørsted Initial Field Model"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Magnetic measurements taken by the Ørsted satellite during geomagnetic quiet conditions around January 1, 2000 have been used to derive a spherical harmonic model of the Earth's magnetic field for epoch 2000.0. The maximum degree and order of the model is 19 for internal, and 2 for external, source fields; however, coefficients above degree 14 may not be robust. Such a detailed model exists for only one previous epoch, 1980. Achieved rms misfit is <2 nT for the scalar intensity and <3 nT for one of the vector components perpendicular to the magnetic field. For scientific purposes related to the Ørsted mission, this model supercedes IGRF 2000.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1580009751480237696","@type":"Researcher","foaf:name":[{"@value":"N. Olsen"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578884","@type":"Researcher","foaf:name":[{"@value":"R. Holme"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578886","@type":"Researcher","foaf:name":[{"@value":"G. Hulot"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578880","@type":"Researcher","foaf:name":[{"@value":"T. Sabaka"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578895","@type":"Researcher","foaf:name":[{"@value":"T. Neubert"}]},{"@id":"https://cir.nii.ac.jp/crid/1380298344914980608","@type":"Researcher","foaf:name":[{"@value":"L. Tøffner‐Clausen"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578883","@type":"Researcher","foaf:name":[{"@value":"F. Primdahl"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578896","@type":"Researcher","foaf:name":[{"@value":"J. Jørgensen"}]},{"@id":"https://cir.nii.ac.jp/crid/1380298344914980609","@type":"Researcher","foaf:name":[{"@value":"J.‐M. Léger"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578891","@type":"Researcher","foaf:name":[{"@value":"D. Barraclough"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578881","@type":"Researcher","foaf:name":[{"@value":"J. Bloxham"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578892","@type":"Researcher","foaf:name":[{"@value":"J. Cain"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579008","@type":"Researcher","foaf:name":[{"@value":"C. Constable"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579015","@type":"Researcher","foaf:name":[{"@value":"V. Golovkov"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579016","@type":"Researcher","foaf:name":[{"@value":"A. Jackson"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579011","@type":"Researcher","foaf:name":[{"@value":"P. Kotzé"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579009","@type":"Researcher","foaf:name":[{"@value":"B. Langlais"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578893","@type":"Researcher","foaf:name":[{"@value":"S. Macmillan"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579010","@type":"Researcher","foaf:name":[{"@value":"M. Mandea"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578885","@type":"Researcher","foaf:name":[{"@value":"J. Merayo"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578894","@type":"Researcher","foaf:name":[{"@value":"L. Newitt"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578888","@type":"Researcher","foaf:name":[{"@value":"M. Purucker"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578882","@type":"Researcher","foaf:name":[{"@value":"T. Risbo"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449578890","@type":"Researcher","foaf:name":[{"@value":"M. Stampe"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579012","@type":"Researcher","foaf:name":[{"@value":"A. Thomson"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320449579013","@type":"Researcher","foaf:name":[{"@value":"C. 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