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1. Identity statement
Reference TypeJournal Article
Sitemtc-m21b.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34P/3QAJ22P
Repositorysid.inpe.br/mtc-m21b/2018/01.02.13.02
Last Update2018:04.10.18.32.22 (UTC) simone
Metadata Repositorysid.inpe.br/mtc-m21b/2018/01.02.13.02.34
Metadata Last Update2018:06.04.02.28.11 (UTC) administrator
DOI10.5194/angeo-35-1309-2017
ISSN0992-7689
Citation KeyNegretiPaulCand:2017:ToElCo
TitleTotal electron content responses to HILDCAAs and geomagnetic storms over South America
Year2017
MonthDec.
Access Date2024, June 13
Type of Workjournal article
Secondary TypePRE PI
Number of Files1
Size21460 KiB
2. Context
Author1 Negreti, Patrícia Mara de Siqueira
2 Paula, Eurico Rodrigues de
3 Candido, Cláudia Maria Nicoli
Resume Identifier1
2 8JMKD3MGP5W/3C9JH2U
Group1 DIDAE-CGCEA-INPE-MCTIC-GOV-BR
2 DIDAE-CGCEA-INPE-MCTIC-GOV-BR
3 DIDAE-CGCEA-INPE-MCTIC-GOV-BR
Affiliation1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
Author e-Mail Address1 patricia.negreti@inpe.br
2 eurico.paula@inpe.br
3 claudia.candido@inpe.br
JournalAnnales Geophysicae
Volume35
Number6
Pages1309-1326
Secondary MarkA2_INTERDISCIPLINAR A2_GEOCIÊNCIAS A2_ENGENHARIAS_I B2_CIÊNCIAS_BIOLÓGICAS_I B2_ASTRONOMIA_/_FÍSICA
History (UTC)2018-01-02 13:02:34 :: simone -> administrator ::
2018-01-02 13:02:35 :: administrator -> simone :: 2017
2018-01-02 13:02:53 :: simone -> administrator :: 2017
2018-01-11 05:30:42 :: administrator -> simone :: 2017
2018-04-10 18:32:22 :: simone -> administrator :: 2017
2018-06-04 02:28:11 :: administrator -> simone :: 2017
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
Version Typepublisher
AbstractTotal electron content (TEC) is extensively used to monitor the ionospheric behavior under geomagnetically quiet and disturbed conditions. This subject is of greatest importance for space weather applications. Under disturbed conditions the two main sources of electric fields, which are responsible for changes in the plasma drifts and for current perturbations, are the short-lived prompt penetration electric fields (PPEFs) and the longer-lasting ionospheric disturbance dynamo (DD) electric fields. Both mechanisms modulate the TEC around the globe and the equatorial ionization anomaly (EIA) at low latitudes. In this work we computed vertical absolute TEC over the low latitude of South America. The analysis was performed considering HILDCAA (high-intensity, long-duration, continuous auroral electrojet (AE) activity) events and geomagnetic storms. The characteristics of storm-time TEC and HILDCAA-associated TEC will be presented and discussed. For both case studies presented in this work (March and August 2013) the HILDCAA event follows a geomagnetic storm, and then a global scenario of geomagnetic disturbances will be discussed. Solar wind parameters, geomagnetic indices, O ∕ N2 ratios retrieved by GUVI instrument onboard the TIMED satellite and TEC observations will be analyzed and discussed. Data from the RBMC/IBGE (Brazil) and IGS GNSS networks were used to calculate TEC over South America. We show that a HILDCAA event may generate larger TEC differences compared to the TEC observed during the main phase of the precedent geomagnetic storm; thus, a HILDCAA event may be more effective for ionospheric response in comparison to moderate geomagnetic storms, considering the seasonal conditions. During the August HILDCAA event, TEC enhancements from  ∼  25 to 80 % (compared to quiet time) were observed. These enhancements are much higher than the quiet-time variability observed in the ionosphere. We show that ionosphere is quite sensitive to solar wind forcing and considering the events studied here, this was the most important source of ionospheric responses. Furthermore, the most important source of TEC changes were the long-lasting PPEFs observed on August 2013, during the HILDCAA event. The importance of this study relies on the peculiarity of the region analyzed characterized by high declination angle and ionospheric gradients which are responsible for creating a complex response during disturbed periods.
AreaCEA
Arrangementurlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Total electron content...
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4. Conditions of access and use
data URLhttp://urlib.net/ibi/8JMKD3MGP3W34P/3QAJ22P
zipped data URLhttp://urlib.net/zip/8JMKD3MGP3W34P/3QAJ22P
Languageen
User Groupsimone
Reader Groupadministrator
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Visibilityshown
Archiving Policyallowpublisher allowfinaldraft
Update Permissionnot transferred
5. Allied materials
Mirror Repositorysid.inpe.br/mtc-m21b/2013/09.26.14.25.22
Next Higher Units8JMKD3MGPCW/3ETL868
Citing Item Listsid.inpe.br/mtc-m21/2012/07.13.14.45.35 2
sid.inpe.br/bibdigital/2013/09.29.20.43 2
DisseminationWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Host Collectionsid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notes
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