{"@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/1360004229802318720.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1002/2014ja020708"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2014JA020708"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2014JA020708"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/full-xml/10.1002/2014JA020708"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Nonlinear growth, bifurcation, and pinching of equatorial plasma bubble simulated by three‐dimensional high‐resolution bubble model"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title>\n                  <jats:p>\n                    A new three‐dimensional high‐resolution numerical model to study equatorial plasma bubble (EPB) has been developed. The High‐Resolution Bubble (HIRB) model is developed in a magnetic dipole coordinate system for the equatorial and low‐latitude ionosphere with a spatial resolution of as fine as 1 km. Adopting a higher‐order numerical scheme than those used in the existing models, the HIRB model is capable of reproducing the bifurcation, pinching, and turbulent structures of EPB. From a seeding perturbation resembling large‐scale wave structure (LSWS), EPB grows nonlinearly from the crest of LSWS upwelling, bifurcates at the top of EPB, then becomes turbulent at the topside of the\n                    <jats:italic>F</jats:italic>\n                    region. One of the bifurcated EPB is pinched off from the primary EPB and stops growing after pinching. The narrow channel of EPB tends to have a wiggle due to the secondary instability along the wall of EPB. Because of the fringe field effect above and below the EPB, upward drifting low‐density plasma converges toward the\n                    <jats:italic>F</jats:italic>\n                    peak altitude, forming a narrow‐depleted channel, and diverges above the peak, forming a flattened top of the EPB. The flattened top which has a steep upward density gradient is so unstable that bifurcation can easily occur even from a very small thermal perturbation. A higher density region between the bifurcated EPB moves downward due to westward polarization electric field. The EPB is pinched off when it reaches the wall of the primary EPB. It is concluded that turbulent plume‐like irregularities can be spontaneously generated only from large‐scale perturbation at the bottomside\n                    <jats:italic>F</jats:italic>\n                    region.\n                  </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004229802318721","@type":"Researcher","foaf:name":[{"@value":"T. Yokoyama"}],"jpcoar:affiliationName":[{"@value":"National Institute of Information and Communications Technology  Koganei Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004229802318720","@type":"Researcher","foaf:name":[{"@value":"H. Shinagawa"}],"jpcoar:affiliationName":[{"@value":"National Institute of Information and Communications Technology  Koganei Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1380004229802318592","@type":"Researcher","foaf:name":[{"@value":"H. Jin"}],"jpcoar:affiliationName":[{"@value":"National Institute of Information and Communications Technology  Koganei Japan"}]}],"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":"2014-12","prism:volume":"119","prism:number":"12","prism:startingPage":"10,474"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor","http://doi.wiley.com/10.1002/tdm_license_1.1"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2014JA020708"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2014JA020708"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/full-xml/10.1002/2014JA020708"}],"createdAt":"2014-12-04","modifiedAt":"2026-02-04","project":[{"@id":"https://cir.nii.ac.jp/crid/1040282257204475520","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"24740336"},{"@type":"JGN","@value":"JP24740336"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24740336/"}],"notation":[{"@language":"ja","@value":"地球磁場形状に適合した全球電離圏モデルによる数百ｋｍスケール擾乱要因の研究"},{"@language":"en","@value":"Development of a high-resolution whole atmosphere-ionosphere model to reproduce ionospheric phenomena with spatial scale of several 100km"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050282810705997952","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@language":"en","@value":"On the application of differential phase measurements to study the zonal large scale wave structure (LSWS) in the ionospheric electron content"}]},{"@id":"https://cir.nii.ac.jp/crid/1050860144864332160","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Data-driven modal analysis of nonlinear quantities in turbulent plasmas using multi-field singular value decomposition"}]},{"@id":"https://cir.nii.ac.jp/crid/1360002215432406400","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Low and Midlatitude Ionospheric Plasma Density Irregularities and Their Effects on Geomagnetic Field"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004229804174208","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"West wall structuring of equatorial plasma bubbles simulated by three‐dimensional HIRB model"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004229808199808","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Vertical rise velocity of equatorial plasma bubbles estimated from Equatorial Atmosphere Radar (EAR) observations and HIRB model simulations"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011145584776448","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"The Constrained Interpolation Profile Method for Multiphase Analysis"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021390558288768","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Modeling of Multi‐Ion Plasma Bubbles in the Equatorial Ionosphere"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021390563033728","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Simultaneous equatorial plasma bubble observation using amplitude scintillations from GNSS and LEO satellites in low-latitude region"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285708269572096","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A Configuration Space Model for Intermediate‐Scale Ionospheric Structure"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292618851013888","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Parallel plate capacitor analogy of equatorial plasma bubble and associated fringe fields with implications to equatorial valley region irregularities"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292620521781760","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Nonlinear evolution of equatorial spread <i>F</i>: 2. 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