{"@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/1361137044349477632.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1016/0021-9169(90)90115-4"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:0021916990901154?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:0021916990901154?httpAccept=text/plain"}}],"dc:title":[{"@value":"Geomagnetic field variation and the equivalent current system generated by an ionospheric dynamo at the solstice"}],"description":[{"notation":[{"@value":"Abstract   The geomagnetic field variation and equivalent current system produced by an asymmetrical ionospheric dynamo action under a solstitial condition are simulated and compared with the observational results. Results of our simulation reproduce well most of the observational features of the solstitial Sq system. For example, the latitude of the current vortex center is higher in summer than in winter and the local time of the center in the summer hemisphere is located earlier than that in the winter hemisphere. In the morning and afternoon sector the current vortex in the summer hemisphere invades the winter hemisphere. The first feature is attributed to the ionospheric currents, but the second and third features are due to the field-aligned currents generated by the asymmetry of the ionospheric dynamo."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137044349477632","@type":"Researcher","foaf:name":[{"@value":"Masahiko Takeda"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00219169"}],"prism:publicationName":[{"@value":"Journal of Atmospheric and Terrestrial Physics"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"1990-01","prism:volume":"52","prism:number":"1","prism:startingPage":"59","prism:endingPage":"67"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:0021916990901154?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:0021916990901154?httpAccept=text/plain"}],"createdAt":"2003-08-06","modifiedAt":"2019-03-16","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050295027686608000","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seasonal variation of inter-hemispheric field-aligned currents deduced from time-series analysis of the equatorial geomagnetic field data during solar cycle 23-24"}]},{"@id":"https://cir.nii.ac.jp/crid/1360298754825669376","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Empirical Modeling of Ionospheric Current Using Empirical Orthogonal Function Analysis and Artificial Neural Network"}]},{"@id":"https://cir.nii.ac.jp/crid/1360584339765080448","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Ionospheric Current Variations by Empirical Orthogonal Function Analysis: Solar Activity Dependence and Longitudinal Differences"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848654736414976","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Quasi‐biennial oscillation of the ionospheric wind dynamo"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1016/0021-9169(90)90115-4"},{"@type":"OPENAIRE","@value":"doi_dedup___::88e8a0f898af232fb6dfd8b769786239"},{"@type":"CROSSREF","@value":"10.1029/2021sw002831_references_DOI_4Ak5gDjln1oxXfYAoh98yP9526D"},{"@type":"CROSSREF","@value":"10.1186/s40623-021-01481-6_references_DOI_4Ak5gDjln1oxXfYAoh98yP9526D"},{"@type":"CROSSREF","@value":"10.1029/2021ja029903_references_DOI_4Ak5gDjln1oxXfYAoh98yP9526D"},{"@type":"CROSSREF","@value":"10.1002/2016ja023684_references_DOI_4Ak5gDjln1oxXfYAoh98yP9526D"}]}