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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21c.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34R/3UQQAQH
Repositóriosid.inpe.br/mtc-m21c/2020/01.24.09.34
Última Atualização2020:01.24.09.34.49 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21c/2020/01.24.09.34.49
Última Atualização dos Metadados2022:03.18.22.11.32 (UTC) administrator
DOI10.5194/angeo-38-35-2020
ISSN0992-7689
Chave de CitaçãoSilvaPadiAlve:2020:LaVaPc
TítuloLatitudinal variation of Pc3–Pc5 geomagnetic pulsation amplitude across the dip equator in central South America
Ano2020
MêsJan.
Data de Acesso07 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho1151 KiB
2. Contextualização
Autor1 Silva, Graziela Belmira Dias da
2 Padilha, Antonio Lopes
3 Alves, Livia Ribeiro
Identificador de Curriculo1
2 8JMKD3MGP5W/3C9JGJG
Grupo1 GESAST-CEA-SESPG-INPE-MCTIC-GOV-BR
2 DIDGE-CGCEA-INPE-MCTIC-GOV-BR
3 DIDGE-CGCEA-INPE-MCTIC-GOV-BR
Afiliação1 Instituto Nacional de Pesquisas Espaciais (INPE)
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1 graziela.silva@inpe.br
2 antonio.padilha@inpe.br
3 livia.alves@inpe.br
RevistaAnnales Geophysicae
Volume38
Número1
Páginas35-49
Nota SecundáriaA2_INTERDISCIPLINAR A2_GEOCIÊNCIAS A2_ENGENHARIAS_I B2_CIÊNCIAS_BIOLÓGICAS_I B2_ASTRONOMIA_/_FÍSICA
Histórico (UTC)2020-01-24 09:34:49 :: simone -> administrator ::
2020-01-24 09:34:49 :: administrator -> simone :: 2020
2020-01-24 09:35:01 :: simone -> administrator :: 2020
2020-01-24 18:25:27 :: administrator -> simone :: 2020
2020-06-23 22:51:14 :: simone -> administrator :: 2020
2020-07-08 17:10:52 :: administrator -> simone :: 2020
2020-12-14 13:54:03 :: simone -> administrator :: 2020
2022-03-18 22:11:32 :: administrator -> simone :: 2020
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
ResumoIn order to clarify the equatorial electrojet effects on ground magnetic pulsations in central South America, we statistically analyzed the amplitude structure of Pc3 and Pc5 pulsations recorded during days considered quiet to moderately disturbed at multiple equatorial stations nearly aligned along the 10◦ magnetic meridian. It was observed that Pc3 amplitudes are attenuated around noon at the dip equator for periods shorter than ∼ 35 s. It is proposed that daytime Pc3s are related to MHD (magnetohydrodynamic) compressional wave vertically incident on the ionosphere, with the screening effect induced by enhanced conductivity in the dip equator causing wave attenuation. Daytime Pc5s showed amplitude enhancement at all equatorial stations, which can be explained by the model of waves excited at higher latitudes and propagating equatorward in an Earthionosphere waveguide. However, a slight depression in Pc5 amplitude compared to neighboring equatorial stations and a phase lag in relation to an off-equatorial station were detected at the dip equator. This wave amplitude depression in the Pc5 frequency band cannot be explained by the ionospheric waveguide model alone, and we propose that an alternative propagation model that allows ULF (ultra-low-frequency) waves to penetrate directly from the magnetosphere to low latitudes could be operating simultaneously to produce these features at the dip equator. Significant effects of the sunrise terminator on Pc3 pulsations were also observed at the stations closest to the dip equator. Contrary to what is reported at other longitudes, in central South America the sunrise effect decreases the D/H amplitude ratio. We suggest that these differences may arise from the unique characteristics of this sector, with a strong longitudinal variation in the magnetic declination and precipitation of energetic particles due to the presence of the South Atlantic Magnetic Anomaly (SAMA). The Hcomponent amplification can be explained by enhancements of the zonal electric field near the magnetic equator driven by F-region neutral winds and waves in the fast-mode of propagation during sunrise.
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4. Condições de acesso e uso
URL dos dadoshttp://mtc-m21c.sid.inpe.br/ibi/8JMKD3MGP3W34R/3UQQAQH
URL dos dados zipadoshttp://mtc-m21c.sid.inpe.br/zip/8JMKD3MGP3W34R/3UQQAQH
Idiomaen
Arquivo Alvosilva_latitudinal.pdf
Grupo de Usuáriossimone
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5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3EU29DP
8JMKD3MGPCW/3F2PBEE
Lista de Itens Citandosid.inpe.br/bibdigital/2013/10.01.22.11 5
sid.inpe.br/mtc-m21/2012/07.13.14.40.26 2
DivulgaçãoWEBSCI; PORTALCAPES; COMPENDEX; SCOPUS.
Acervo Hospedeirourlib.net/www/2017/11.22.19.04
6. Notas
Campos Vaziosalternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
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