%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3EU29DP
%@archivingpolicy denypublisher denyfinaldraft24
%@usergroup administrator
%@usergroup simone
%3 The extreme halloween 2003 solar flares.pdf
%@dissemination WEBSCI; PORTALCAPES; MGA; COMPENDEX.
%D 2006
%2 sid.inpe.br/mtc-m16@80/2006/08.02.14.51.49
%4 sid.inpe.br/mtc-m16@80/2006/08.02.14.51
%X Extreme solar flares can cause extreme ionospheric effects. The Oct 28, 2003 flare caused a 25 TECU (a total electron content unit is 1016 electron/m2 column density), or a 30%, increase in the local noon equatorial ionospheric column density. This enhancement occurred within 5 min. This TEC increase was 5 times the TEC increases detected for the Oct 29, 2003, Nov 4, 2003, and the July 14, 2000 (Bastille Day) flares. In the 260340  EUV wavelength range, the Oct 28 flare peak count rate was more than twice as large as for the other three flares. Another strong ionospheric effect is the delayed influence (due to solar wind propagation) of interplanetary coronal mass ejection (ICME) electric fields on the ionosphere. For the Oct 28 and 29 flares, the associated ICMEs propagated from the sun to the Earth at particularly high speeds. The prompt penetration of the interplanetary electric field caused the dayside equatorial ionospheric to be strongly convected upward. This led to enhanced TEC to values >300% nominal values in 2 h. Proposed mechanisms for this TEC enhancement will be discussed.
%N 8
%T The extreme Halloween 2003 solar flares (and Bastille Day, 2000 Flare), ICMEs, and resultant extreme ionospheric effects: A review
%@secondarytype PRE PI
%K Solar flares, Ionospheric effects, Halloween events.
%@group
%@group
%@group DGE-INPE-MCT-BR
%@group DGE-INPE-MCT-BR
%@secondarykey INPE-13941--PRE/9121
%@copyholder SID/SCD
%@issn 0273-1177
%@affiliation University of Southern California
%@affiliation California Institute of Technology
%@affiliation Instituto Nacional de Pesquisas Espaciais, Divisão de Geofísica Espacial (INPE.DGE),
%@affiliation Instituto Nacional de Pesquisas Espaciais, Divisão de Geofísica Espacial (INPE.DGE),
%@affiliation University of Southern California
%@affiliation University of Southern California
%@affiliation Goddard Space Flight Center
%B Advances in Space Research
%P 1583-1588
%V 37
%A Tsurutani, Bruce T.,
%A Mannucci, A. J.,
%A Guarnieri, Fernando Luís,
%A Gonzalez, Walter Demétrio,
%A Judge, D. L.,
%A Gangopadhyay, P.,
%A Pap, J.,
%@area CEA