| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | mtc-m16.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repositório | sid.inpe.br/mtc-m16@80/2006/11.24.13.18 |
| Repositório de Metadados | sid.inpe.br/mtc-m16@80/2006/11.24.13.18.04 |
| Última Atualização dos Metadados | 2018:06.05.01.17.07 (UTC) administrator |
| Chave Secundária | INPE--PRE/ |
| Chave de Citação | PimentaSaha:2006:TwCaSt |
| Título | First observations of thermospheric bores using all-sky OI 630 nm emission images: two cases studied in the brazilian tropical sector  |
| Ano | 2006 |
| Data de Acesso | 09 maio 2024 |
| Tipo Secundário | PRE CI |
| 2. Contextualização | |
| Autor | 1 Pimenta, Alexandre Alvares 2 Sahai, Yogeshwar |
| Grupo | 1 DAE-INPE-MCT-BR 2 DAE-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Especiais, Divisão de Aeronomia (INPE.DAE) 2 Instituto Nacional de Pesquisas Especiais, Divisão de Aeronomia (INPE.DAE) |
| Nome do Evento | Committe on Space Research, 36 (COSPAR). |
| Localização do Evento | Beijing, China |
| Data | 2006-07-16 |
| Título do Livro | Proceedings |
| Tipo Terciário | Oral Session |
| Histórico (UTC) | 2006-11-24 13:18:04 :: simone -> administrator :: 2018-06-05 01:17:07 :: administrator -> marciana :: 2006 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Resumo | Using data from ground-based and satellite measurements we investigate the unusual thermospheric disturbance events that occurred in the equatorial and low latitude regions in the Brazilian sector. On the nights of September 07-08, 1997 and July 13-14, 1999, the all-sky imaging observations of the OI 630 nm emission carried out at Cachoeira Paulista (22.7°S, 45°W, magnetic declination 20°W), Brazil, showed dark band structures, stretched across the entire imager, propagating from southeast to northwest. These dark patches moved with a velocity of about 230 m/s at an altitude of 250-300 km, which is the typical altitude range of the OI 630.0 nm airglow emission. Also, ionosonde observations, available for one of the events, registered abrupt increases in both the F-layer peak height (hpF2) and base height (hF), when the low intensity band passed over Cachoeira Paulista. This behavior seems to be related with equatorward wind velocity enhancements, which pushes the F-layer plasma to higher altitudes along the geomagnetic field lines, thus causing the 630 nm airglow intensity reduction. It should be pointed out that these thermospheric events are not related to geomagnetic disturbed conditions. Also, on one of the nights, near simultaneous measurements of NIR OH, OI (557.7 nm) and O2(0,1) emissions showed active wave structures in the mesospheric region and around midnight, the all-sky imaging observations of mesospheric emissions showed a bore-like wave-front passing overhead and propagating equatorward. In addition, the weather maps obtained by the GOES satellite identified possible sources of internal gravity waves (cold front and jet streams) in the tropospheric region, during these two nights. In this work we present and discuss the in-fluence of internal gravity waves, generated in the troposphere (propagating upward through the mesosphere and reaching the bottomside of the nighttime F region), as the main cause of these thermospheric disturbances. |
| Área | CEA |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > First observations of... |
| Conteúdo da Pasta doc | não têm arquivos |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | en |
| Grupo de Usuários | administrator simone administrator |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| Permissão de Atualização | transferida para simone |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ETL868 |
| Acervo Hospedeiro | sid.inpe.br/banon/2003/08.15.17.40 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor electronicmailaddress format identifier isbn issn keywords label lineage mark mirrorrepository nextedition notes numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |