{"@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/1363670320575671552.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2009ja014984"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2009JA014984"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2009JA014984"}}],"dc:title":[{"@value":"Variabilities of the equatorial electrojet in Brazil and Perú"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>This report presents seasonal and longitudinal variabilities of the equatorial electrojet in the east (Brazil, São Luís: 2.3° S; 315.8° E; 0.5° S dip latitude) and west (Jicamarca, Perú: 11.95° S; 283.13° E; 0.6° N dip latitude) coasts of the continent of South America. Ground‐based magnetic field perturbation measurements Δ<jats:italic>H</jats:italic> for solar maximum (2001/2002) and solar minimum (2006/2007) conditions from the two equatorial stations (São Luís and Jicamarca) have been used for the study. The Δ<jats:italic>H</jats:italic> signal which is a measure of the strength of the equatorial electrojet is spectrally analyzed using wavelet analysis. The results of our analysis show that (1) the equatorial electrojet has maxima around equinoxes in Jicamarca, Perú but it has a prominent maximum during Southern Hemisphere summer (centered about December/January) in São Luís, Brazil. The observed seasonal behavior of the equatorial electrojet in São Luís is highly likely due to the large magnetic declination angle (about 20° west) there. (2) The equatorial electrojet is stronger in the west coast (Jicamarca) compared to the east coast (São Luís), irrespective of solar activity condition. (3) The magnitude of the equatorial electrojet is more variable with season and solar cycle over São Luís than over Jicamarca.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004057902514443","@type":"Researcher","foaf:name":[{"@value":"E. B. Shume"}],"jpcoar:affiliationName":[{"@value":"Aeronomy Division National Institute for Space Research  São Paulo Brazil"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320575671554","@type":"Researcher","foaf:name":[{"@value":"C. M. Denardini"}],"jpcoar:affiliationName":[{"@value":"Aeronomy Division National Institute for Space Research  São Paulo Brazil"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320575671555","@type":"Researcher","foaf:name":[{"@value":"E. R. de Paula"}],"jpcoar:affiliationName":[{"@value":"Aeronomy Division National Institute for Space Research  São Paulo Brazil"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320575671553","@type":"Researcher","foaf:name":[{"@value":"N. B. Trivedi"}],"jpcoar:affiliationName":[{"@value":"Space Geophysics Division National Institute for Space Research  São Paulo Brazil"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"01480227"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2010-06","prism:volume":"115","prism:number":"A6","prism:startingPage":"A06306"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2009JA014984"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2009JA014984"}],"createdAt":"2010-06-15","modifiedAt":"2023-11-02","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360565167415820544","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Peak time of equatorial electrojet from different longitude sectors during fall solar minimum"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565167939536640","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Longitudinal and solar activity dependence of equatorial electrojet at Southeast Asian sector"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567182198634240","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Characteristics of equatorial electrojet over India determined from a thick current shell model"}]},{"@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/2051714792052378240","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Empirical model of equatorial electrojet based on ground-based magnetometer data during solar minimum in fall"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1029/2009ja014984"},{"@type":"CROSSREF","@value":"10.1186/s40623-015-0373-1_references_DOI_QcdH5U3pey3ZYRaxBj8IGqlNUvL"},{"@type":"CROSSREF","@value":"10.1088/1742-6596/852/1/012015_references_DOI_QcdH5U3pey3ZYRaxBj8IGqlNUvL"},{"@type":"CROSSREF","@value":"10.1029/2021ja029903_references_DOI_QcdH5U3pey3ZYRaxBj8IGqlNUvL"},{"@type":"CROSSREF","@value":"10.1109/iconspace.2015.7283763_references_DOI_QcdH5U3pey3ZYRaxBj8IGqlNUvL"},{"@type":"CROSSREF","@value":"10.1016/j.jastp.2012.10.014_references_DOI_QcdH5U3pey3ZYRaxBj8IGqlNUvL"}]}