Contribution of storm time substorms to the prompt electric field disturbances in the equatorial ionosphere

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dc.contributor.authorHui, Debrup
dc.contributor.authorChakrabarty, D.
dc.contributor.authorSekar, R.
dc.contributor.authorReeves, G. D.
dc.contributor.authorYoshikawa, A.
dc.contributor.authorShiokawa, K.
dc.date.accessioned2018-11-21T15:54:19Z
dc.date.available2018-11-21T15:54:19Z
dc.date.issued2017-04-18
dc.description.abstractThis study tries to bring out the fact that storm time substorms can compete and at times significantly contribute to the geomagnetically disturbed time prompt penetration electric field effects on low and equatorial latitudes. Observations of unusual equatorial plasma drift data from Jicamarca Unattended Long‐term Investigations of the Ionosphere and Atmosphere during two space weather events show that substorms can induce both eastward and westward penetration electric fields under steady southward interplanetary magnetic field (IMF Bz) conditions. During the first event on 2 January 2005, the enhancement of the daytime eastward electric field over Jicamarca due to substorm is found to be comparable with the Sq and interplanetary electric field (IEFy) generated electric fields combined. During the second event on 19 August 2006, the substorm is seen to weaken the daytime eastward field thereby inducing a westward field in spite of the absence of northward turning of IMF Bz (overshielding). The westward electric field perturbation in the absence of any overshielding events is observationally sparse and contrary to the earlier results. Further, the substorm‐induced field is found to be strong enough to compete or almost nullify the effects of storm time IEFy fields. This study also shows quantitatively that at times substorm contribution to the disturbed time prompt electric fields can be significant and thus should be taken into consideration in evaluating penetration events over low latitudes.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationHui, D., Chakrabarty, D., Sekar, R., Reeves, G. D., Yoshikawa, A., & Shiokawa, K. (2017). Contribution of storm time substorms to the prompt electric field disturbances in the equatorial ionosphere.==$Journal of Geophysical Research: Space Physics, 122$==(5), 5568-5578. https://doi.org/10.1002/2016JA023754es_ES
dc.identifier.doihttps://doi.org/10.1002/2016JA023754es_ES
dc.identifier.journalJournal of Geophysical Research: Space Physicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3778
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:2169-9380
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectSubstormes_ES
dc.subjectPrompt penetrationes_ES
dc.subjectEquatorial ionospherees_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleContribution of storm time substorms to the prompt electric field disturbances in the equatorial ionospherees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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