| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | plutao.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 8JMKD3MGP3W/3FCLEJ5 |
| Repositório | sid.inpe.br/plutao/2013/12.12.17.29.27 |
| Repositório de Metadados | sid.inpe.br/plutao/2013/12.12.17.29.28 |
| Última Atualização dos Metadados | 2022:03.18.22.15.31 (UTC) administrator |
| Rótulo | lattes: 4161737266837399 1 CamposSaba:2013:ViLePr |
| Chave de Citação | CamposSaba:2013:ViLePr |
| Título | Visible leader propagation during the preliminary breakdown pulse activity preceding a negative cloud-to-ground stroke  |
| Formato | DVD |
| Ano | 2013 |
| Data de Acesso | 18 maio 2024 |
| Tipo Secundário | PRE CI |
| 2. Contextualização | |
| Autor | 1 Campos, Leandro Zanella de Souza 2 Saba, Marcelo Magalhães Fares |
| Identificador de Curriculo | 1 2 8JMKD3MGP5W/3C9JHP6 |
| Grupo | 1 GESATM-CEA-SPG-INPE-MCTI-GOV-BR 2 CST-CST-INPE-MCTI-GOV-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Endereço de e-Mail do Autor | 1 leandro.zanella@gmail.com |
| Endereço de e-Mail | leandro.zanella@gmail.com |
| Nome do Evento | International Symposium on Lightning Protection, 12. |
| Localização do Evento | Belo Horizonte |
| Data | 2013 |
| Volume | 1 |
| Título do Livro | Proceedings |
| Tipo Terciário | Paper |
| Histórico (UTC) | 2013-12-12 17:29:28 :: lattes -> administrator :: 2014-01-11 19:10:02 :: administrator -> marcelo.pazos@sid.inpe.br :: 2013 2014-01-20 12:10:30 :: marcelo.pazos@sid.inpe.br -> administrator :: 2013 2022-03-18 22:15:31 :: administrator -> marcelo.pazos@inpe.br :: 2013 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Palavras-Chave | Lightning Initial breakdown Lightning Leaders Lightning Physics Atmospheric Electricity Stepped leader |
| Área | CEA |
| Arranjo 1 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > GES > Visible leader propagation... |
| Arranjo 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > COCST > Visible leader propagation... |
| 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 | lattes marcelo.pazos@inpe.br |
| Grupo de Leitores | administrator marcelo.pazos@inpe.br |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Repositório Espelho | iconet.com.br/banon/2006/11.26.21.31 |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3F2PBEE 8JMKD3MGPCW/3F3T29H |
| Acervo Hospedeiro | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notas | |
| Notas | Informações Adicionais: The present work consists on the report of one stepped leader event whose initial development becomes visible above cloud base. The leader starts to propagate with speeds of the order of 10^6 m/s simultaneously with the emission of electric field pulses normally associated with the preliminary breakdown phase. This event has been observed in São José dos Campos, southeastern Brazil, with the help of one high-speed camera (set to record 4000 frames per second), GPS time-synchronized, and three flat antenna electric field sensors (two configured as fast antennas, with gains different by a factor of 10, and one configured as a slow antenna). Lightning location system data provided an estimation of distance between the instruments and ground contact point (approximately 14.6 km), which allowed us to develop a photogrammetric analysis based on the recorded imagery data. The leader leaves the cloud opaque region around 4800 m above ground (instead of emerging from its base, about 2000 m above ground), propagating with speeds above 1 x 10^6 m/s and emitting a particularly intense luminosity. At heights between 3900 and 3600 m, the leader begins to slow down, presenting speeds in the 5-6 x 10^5 m/s range and a considerable decrease in it luminous intensity. Finally, when the leader tip reaches heights below 3000 m from the ground, its propagation speeds oscillates between 2 and 4 x 10^5 m/s. When the photogrammetry data (leader tip speed and height) is temporally correlated with the electric field waveforms, one can notice that the initial, fast propagation phase (with speeds of the order of 10^6 m/s) occurs simultaneously with the emission of pulses usually associated in literature with preliminary breakdown processes. Some of the pulses were so intense that they saturated the higher-gain fast electric field sensor and could also be sensed by the slow electric field sensor. A detailed analysis of these initial pulses show a bipolar structure in which one or more small nega. |
| Campos Vazios | abstract archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi edition editor isbn issn lineage mark nextedition numberoffiles numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress rightsholder schedulinginformation secondarydate secondarykey secondarymark serieseditor session shorttitle size sponsor subject targetfile tertiarymark type url versiontype |
| 7. Controle da descrição | |
| e-Mail (login) | marcelo.pazos@inpe.br |
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