| 1. Identity statement | ||||
| Reference Type | Journal Article | |||
| Site | mtc-m16d.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP7W/3A77A25 | |||
| Repository | sid.inpe.br/mtc-m19/2011/08.01.14.20 (restricted access) | |||
| Last Update | 2011:12.06.17.11.49 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m19/2011/08.01.14.20.29 | |||
| Metadata Last Update | 2018:06.05.04.24.38 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| DOI | 10.1029/2010JA016374 | |||
| ISSN | 0926-9851 | |||
| Citation Key | CandidoBaBeAbSoTa:2011:SpOcOv | |||
| Title | Spread F occurrence over a southern anomaly crest location in Brazil during June solstice of solar minimum activity  | |||
| Project | CNPq[476937/2006-0]; FAPESP[2008/50553-8] | |||
| Year | 2011 | |||
| Month | Jun 24 | |||
| Access Date | 2024, May 04 | |||
| Secondary Type | PRE PI | |||
| Number of Files | 1 | |||
| Size | 2725 KiB | |||
| 2. Context | ||||
| Author | 1 Candido, Cláudia Maria Nicoli 2 Batista, Inez Starciarini 3 Becker-Guedes, Fábio 4 Abdu, Mangalahyil Ali 5 Sobral, José Humberto de Andrade 6 Takashi, Hisao | |||
| Group | 1 DGE-CEA-INPE-MCT-BR 2 DAE-CEA-INPE-MCT-BR 3 DAE-CEA-INPE-MCT-BR 4 DAE-CEA-INPE-MCT-BR 5 DAE-CEA-INPE-MCT-BR | |||
| Affiliation | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) 5 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| e-Mail Address | secretaria.cpa@dir.inpe.br | |||
| Journal | Journal of Applied Geophysics | |||
| Volume | 116 | |||
| Pages | AO6316. | |||
| History (UTC) | 2011-11-01 11:45:46 :: secretaria.cpa@dir.inpe.br -> tereza@sid.inpe.br :: 2011 2011-12-06 17:11:49 :: tereza@sid.inpe.br -> administrator :: 2011 2012-07-15 02:58:50 :: administrator -> banon :: 2011 2012-09-26 15:28:21 :: banon -> administrator :: 2011 2018-06-05 04:24:38 :: administrator -> tereza@sid.inpe.br :: 2011 | |||
| 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 | |||
| Keywords | VERTICAL PLASMA DRIFTS AMERICAN SECTOR LOW LATITUDES EQUATORIAL REGION IRREGULARITIES DISTURBANCES DEPLETIONS SATELLITE BUBBLES | |||
| Abstract | We present a study of Spread F occurrence over a location under the southern crest of the equatorial ionization anomaly (Cachoeira Paulista 22.7 degrees S, 45.0 degrees W, mag. Lat.: 16 degrees S, dip angle: -32.3 degrees, Brazil) during the last solar cycle, which presented an extended solar minimum activity. After analyzing hundreds of ionograms obtained with a digital ionosonde DGS 256, between 2001 and 2010, we verified high Spread F occurrence around midnight-postmidnight during June solstice (Southern Hemisphere winter) with a peak occurrence between 2006 and 2009, when the solar flux has reached very low values (<70 SFU). At the Brazilian sector the occurrence of Spread F is known to be associated with equatorial plasma bubbles (EPBs) and is observed mainly between September and March. On the other hand, EPBs are rarely observed over Cachoeira Paulista (hereafter referred as CP) during June solstice because of the weak magnitudes of the equatorial electric field prereversal enhancement, an essential condition to the development of the large-scale irregularities at the equatorial region. Despite the rarity of EPBs, we observed several strong Spread F events occurring under low plasma densities conditions which can extend for several hours. We have found evidences that the Spread F events over CP during June solstices of low solar activity can be caused by ionospheric disturbances that are unrelated to equatorial processes. Finally we present a statistical analysis of the events and we suggest that traveling ionospheric disturbances could be one of the main sources of these nonequatorial Spread F events. | |||
| Area | CEA | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Spread F occurrence... | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDGE > Spread F occurrence... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| Language | en | |||
| User Group | administrator banon secretaria.cpa@dir.inpe.br tereza@sid.inpe.br | |||
| Visibility | shown | |||
| Archiving Policy | denypublisher denyfinaldraft24 | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53 | |||
| Next Higher Units | 8JMKD3MGPCW/3ETL868 8JMKD3MGPCW/3EU29DP | |||
| Dissemination | WEBSCI; AGU; MGA; COMPENDEX. | |||
| Host Collection | sid.inpe.br/mtc-m19@80/2009/08.21.17.02 | |||
| 6. Notes | ||||
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel electronicmailaddress format isbn label lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject targetfile tertiarymark tertiarytype typeofwork url | |||
| 7. Description control | ||||
| e-Mail (login) | tereza@sid.inpe.br | |||
| update | ||||