Early morning enhancement in ionospheric electron density during intense magnetic storms

Autor:	I. S. Batista, J.R. de Souza, P. A. B. Nogueira, M. A. Abdu, V.H. Rios, R. R. Paes, Bodo W. Reinisch
Rok vydání:	2012
Předmět:	Atmospheric Science Anomaly (natural sciences) Aerospace Engineering Astronomy and Astrophysics Storm Atmospheric sciences F region Latitude Geophysics Earth's magnetic field Space and Planetary Science General Earth and Planetary Sciences Ionosphere Interplanetary spaceflight Geology Morning
Zdroj:	Advances in Space Research. 49:1544-1552
ISSN:	0273-1177
DOI:	10.1016/j.asr.2012.01.006
Popis:	This study reports on ionospheric disturbances that occurred in the early morning hours in the South American–Atlantic sector during a few intense/super storm events. The events were observed at latitudes close to the southern crest of the equatorial ionization anomaly (EIA) as an unusual intensification of the F region electron density peak at local times when the EIA is not usually developed. All the events were observed at pre dawn-morning hours, under conditions of northward interplanetary geomagnetic field. Large scale traveling ionospheric disturbances that are launched during highly disturbed conditions and/or equatorward surges in the thermospheric meridional winds seem to be the most probable causes of the observed disturbances.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2d1298f7b5ba00ba6344c175f00f05c3 https://doi.org/10.1016/j.asr.2012.01.006 Zobrazit plný text záznamu Full Text from ScienceDirect