%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ETL868
%@archivingpolicy denypublisher denyfinaldraft24
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JH2U
%@resumeid 8JMKD3MGP5W/3C9JHNK
%X This brief report presents daytime 30 MHz radar observations of equatorial electrojet plasma irregularities in São Luís, Brazil, during the 10 January 2002, 4 September 2002, and 6 November 2001 geomagnetic storms. Modulation of equatorial electrojet plasma waves by the overshielding electric field is detected by the radar during the January and September storm events. The depressions of radar echo intensity observed by the São Luís radar during the 10 January and 4 September 2002 storms are caused by inhibition of large-, medium-, and short-scale electrojet plasma waves by the overshielding electric field. Corresponding to the depressions of the radar echoes, counter equatorial electrojets were observed by ground-based magnetometer in São Luís. The influences of disturbance dynamo, undershielding, and overshielding electric fields on the equatorial electrojet irregularities and current have been evident on the 6 November 2001 radar and magnetic field data. This study demonstrates the control of the equatorial electrojet plasma waves (growth and suppression) by the interplanetary magnetic field and also the coupling between the high-latitude and equatorial ionospheres.
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%8 Aug
%T Modulation of equatorial electrojet plasma waves by overshielding electric field during geomagnetic storms
%@electronicmailaddress
%@electronicmailaddress eurico@dae.inpe.br
%@secondarytype PRE PI
%K Equatorial electrojet, Plasma irregularities, São Luis, MA.
%@usergroup administrator
%@usergroup banon
%@usergroup tereza@sid.inpe.br
%@group DAE-CEA-INPE-MCT-BR
%@group DAE-CEA-INPE-MCT-BR
%@group DAE-CEA-INPE-MCT-BR
%@e-mailaddress tereza@sid.inpe.br
%@secondarykey INPE--PRE/
%@secondarymark B1_ASTRONOMIA_/_FÍSICA B2_CIÊNCIA_DA_COMPUTAÇÃO A1_CIÊNCIAS_AGRÁRIAS_I A1_ECOLOGIA_E_MEIO_AMBIENTE A1_ENGENHARIAS_I A2_ENGENHARIAS_II A1_ENGENHARIAS_III A2_ENGENHARIAS_IV A1_GEOCIÊNCIAS A1_INTERDISCIPLINAR
%@issn 0926-9851
%2 sid.inpe.br/mtc-m19/2011/12.06.15.57.30
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@project FAPESP 2007/08185-9; FAPESP 99/00026-0
%B Journal of Applied Geophysics
%@versiontype publisher
%P A08302
%4 sid.inpe.br/mtc-m19/2011/12.06.15.57
%@documentstage not transferred
%D 2011
%V 116
%@doi 10.1029/2010JA016353
%A Shume, Esayas Belay,
%A Paula, Eurico Rodrigues de,
%A Abdu, Mangalathayil Ali,
%@dissemination WEBSCI; AGU; MGA; COMPENDEX.
%@area CEA