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dc.contributor.author Hui, Debrup
dc.contributor.author Chakrabarty, D.
dc.contributor.author Sekar, R.
dc.contributor.author Reeves, G. D.
dc.contributor.author Yoshikawa, A.
dc.contributor.author Shiokawa, K.
dc.date.accessioned 2018-11-21T15:54:19Z
dc.date.available 2018-11-21T15:54:19Z
dc.date.issued 2017-04-18
dc.identifier.citation Hui, 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/10.1002/2016JA023754 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3778
dc.description.abstract This 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.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:2169-9380
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Substorm es_ES
dc.subject Prompt penetration es_ES
dc.subject Equatorial ionosphere es_ES
dc.title Contribution of storm time substorms to the prompt electric field disturbances in the equatorial ionosphere es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1002/2016JA023754 es_ES

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