{"@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/1363670320548547072.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/2015ja021040"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2015JA021040"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/2015JA021040"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/2015JA021040"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2015JA021040"}}],"dc:title":[{"@value":"Three‐dimensional current systems and ionospheric effects associated with small dipolarization fronts"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>We present a case study of eight successive plasma sheet (PS) activations (usually referred to as bursty bulk flows or dipolarization fronts), associated with small individual <jats:inline-graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"graphic/jgra51791-math-0001.png\" xlink:title=\"urn:x-wiley:jgra:media:jgra51791:jgra51791-math-0001\"/> increases on 31 March 2009 (0200–0900 UT), observed by the Time History of Events and Macroscale Interactions During Substorms mission. This series of events happens during very quiet solar wind conditions, over a period of 7 h preceding a substorm onset at 1230 UT. The amplitude of the dipolarizations increases with time. The low‐amplitude dipolarization fronts are associated with few (1 or 2) rapid flux transport events (RFT, <jats:italic>E</jats:italic><jats:sub><jats:italic>h</jats:italic></jats:sub>>2 mV/m), whereas the large‐amplitude ones encompass many more RFT events. All PS activations are associated with small and localized substorm current wedge (SCW)‐like current system signatures, which seems to be the consequence of RFT arrival in the near tail. The associated ground magnetic perturbations affect a larger part of the contracted auroral oval when, in the magnetotail, more RFT are embedded in PS activations (>5). Dipolarization fronts with very low amplitude, a type usually not included in statistical studies, are of particular interest because we found even those to be associated with clear small SCW‐like current system and particle injections at geosynchronous orbit. This exceptional data set highlights the role of flow bursts in the magnetotail and leads to the conclusion that we may be observing the smallest form of a substorm or rather its smallest element. This study also highlights the gradual evolution of the ionospheric current disturbance as the plasma sheet is observed to heat up.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380848661782428675","@type":"Researcher","foaf:name":[{"@value":"L. Palin"}],"jpcoar:affiliationName":[{"@value":"Swedish Institute of Space Physics  Uppsala Sweden"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547073","@type":"Researcher","foaf:name":[{"@value":"C. Jacquey"}],"jpcoar:affiliationName":[{"@value":"IRAP CNRS‐University of Toulouse  Toulouse France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547082","@type":"Researcher","foaf:name":[{"@value":"H. Opgenoorth"}],"jpcoar:affiliationName":[{"@value":"Swedish Institute of Space Physics  Uppsala Sweden"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547078","@type":"Researcher","foaf:name":[{"@value":"M. Connors"}],"jpcoar:affiliationName":[{"@value":"Department of Physics Athabasca University  Edmonton Alberta Canada"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547080","@type":"Researcher","foaf:name":[{"@value":"V. Sergeev"}],"jpcoar:affiliationName":[{"@value":"Department of Earth's Physics St. Petersburg State University  St. Petersburg Russia"}]},{"@id":"https://cir.nii.ac.jp/crid/1380294663220623360","@type":"Researcher","foaf:name":[{"@value":"J.‐A. Sauvaud"}],"jpcoar:affiliationName":[{"@value":"IRAP CNRS‐University of Toulouse  Toulouse France"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547075","@type":"Researcher","foaf:name":[{"@value":"R. Nakamura"}],"jpcoar:affiliationName":[{"@value":"Space Research Institute Austrian Academy of Sciences  Graz Austria"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547076","@type":"Researcher","foaf:name":[{"@value":"G. D. Reeves"}],"jpcoar:affiliationName":[{"@value":"Los Alamos National Laboratory  Los Alamos New Mexico USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547072","@type":"Researcher","foaf:name":[{"@value":"H. J. Singer"}],"jpcoar:affiliationName":[{"@value":"NOAA Space Weather Prediction Center  Boulder Colorado USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547079","@type":"Researcher","foaf:name":[{"@value":"V. Angelopoulos"}],"jpcoar:affiliationName":[{"@value":"Department of Earth, Planetary, and Space Sciences, IGPP University of California  Los Angeles California USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320548547077","@type":"Researcher","foaf:name":[{"@value":"L. Turc"}],"jpcoar:affiliationName":[{"@value":"Scientific Support Office, Directorate of Science and Robotic Exploration European Space Research and Technology Centre (ESA)  Noordwijk Netherlands"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"21699380"},{"@type":"EISSN","@value":"21699402"}],"prism:publicationName":[{"@value":"Journal of Geophysical Research: Space Physics"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2015-05","prism:volume":"120","prism:number":"5","prism:startingPage":"3739","prism:endingPage":"3757"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2015JA021040"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/2015JA021040"},{"@id":"https://onlinelibrary.wiley.com/doi/full-xml/10.1002/2015JA021040"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2015JA021040"}],"createdAt":"2015-04-23","modifiedAt":"2023-09-16","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/2051151842098768640","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Eastward-expanding auroral surges observed in the post-midnight sector during a multiple-onset substorm"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1002/2015ja021040"},{"@type":"CROSSREF","@value":"10.1186/s40623-015-0350-8_references_DOI_DggVuN8WPGWcOqxhkd0z0mwtuqV"}]}