| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m21c.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34R/3UQQAQH | |||
| Repository | sid.inpe.br/mtc-m21c/2020/01.24.09.34 | |||
| Last Update | 2020:01.24.09.34.49 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21c/2020/01.24.09.34.49 | |||
| Metadata Last Update | 2022:03.18.22.11.32 (UTC) administrator | |||
| DOI | 10.5194/angeo-38-35-2020 | |||
| ISSN | 0992-7689 | |||
| Citation Key | SilvaPadiAlve:2020:LaVaPc | |||
| Title | Latitudinal variation of Pc3–Pc5 geomagnetic pulsation amplitude across the dip equator in central South America  | |||
| Year | 2020 | |||
| Month | Jan. | |||
| Access Date | 2024, May 22 | |||
| Type of Work | journal article | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 1151 KiB | |||
| 2. Context | ||||
| Author | 1 Silva, Graziela Belmira Dias da 2 Padilha, Antonio Lopes 3 Alves, Livia Ribeiro | |||
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JGJG | |||
| Group | 1 GESAST-CEA-SESPG-INPE-MCTIC-GOV-BR 2 DIDGE-CGCEA-INPE-MCTIC-GOV-BR 3 DIDGE-CGCEA-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 graziela.silva@inpe.br 2 antonio.padilha@inpe.br 3 livia.alves@inpe.br | |||
| Journal | Annales Geophysicae | |||
| Volume | 38 | |||
| Number | 1 | |||
| Pages | 35-49 | |||
| Secondary Mark | A2_INTERDISCIPLINAR A2_GEOCIÊNCIAS A2_ENGENHARIAS_I B2_CIÊNCIAS_BIOLÓGICAS_I B2_ASTRONOMIA_/_FÍSICA | |||
| History (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. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | In 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. | |||
| Area | CEA | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > Latitudinal variation of... | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > GES > Latitudinal variation of... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/8JMKD3MGP3W34R/3UQQAQH | |||
| zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34R/3UQQAQH | |||
| Language | en | |||
| Target File | silva_latitudinal.pdf | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Archiving Policy | allowpublisher allowfinaldraft | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Next Higher Units | 8JMKD3MGPCW/3EU29DP 8JMKD3MGPCW/3F2PBEE | |||
| Citing Item List | sid.inpe.br/bibdigital/2013/10.01.22.11 7 sid.inpe.br/mtc-m21/2012/07.13.14.40.26 2 | |||
| Dissemination | WEBSCI; PORTALCAPES; COMPENDEX; SCOPUS. | |||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal 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 | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||