| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | mtc-m21b.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 8JMKD3MGP5W34M/3FA44Q4 |
| Repositório | sid.inpe.br/mtc-m21b/2013/11.26.16.47.08 (acesso restrito) |
| Última Atualização | 2014:02.06.11.20.43 (UTC) administrator |
| Repositório de Metadados | sid.inpe.br/mtc-m21b/2013/11.26.16.47.09 |
| Última Atualização dos Metadados | 2022:03.18.22.15.37 (UTC) administrator |
| DOI | 10.1016/j.atmosres.2012.12.011 |
| ISSN | 0169-8095 |
| Rótulo | scopus 2013-11 |
| Chave de Citação | CamposSaWaPiKrOr:2014:StAn |
| Título | High-speed video observations of natural cloud-to-ground lightning leaders - A statistical analysis  |
| Projeto | CNPq (475299/2003-5); FAPESP (03/08655-4); FAPESP (2010/02716-5) |
| Ano | 2014 |
| Mês | Jan. |
| Data de Acesso | 02 maio 2024 |
| Tipo de Trabalho | journal article |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 1 |
| Tamanho | 1521 KiB |
| 2. Contextualização | |
| Autor | 1 Campos, Leandro Zanella de Souza 2 Saba, Marcelo Magalhães Fares 3 Warner, Tom A. 4 Pinto Jr., Osmar 5 Krider, E. Philip 6 Orville, Richard E. |
| Identificador de Curriculo | 1 2 8JMKD3MGP5W/3C9JHP6 |
| Grupo | 1 GESATM-CEA-SPG-INPE-MCTI-GOV-BR 2 CST-CST-INPE-MCTI-GOV-BR 3 4 CST-CST-INPE-MCTI-GOV-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Department of Atmospheric Sciences, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA 4 Instituto Nacional de Pesquisas Espaciais (INPE) 5 Institute of Atmospheric Physics, University of Arizona, Tucson, AZ 85721, USA 6 Department of Atmospheric Sciences, Texas A and M University, College Station, TX 77843, USA |
| Endereço de e-Mail do Autor | 1 leandro.zanella@gmail.com 2 marcelo.saba@inpe.br 3 4 osmar@dge.inpe.br |
| Endereço de e-Mail | marcelo.pazos@inpe.br |
| Revista | Atmospheric Research |
| Volume | 135-136 |
| Páginas | 285–305 |
| Nota Secundária | A1_CIÊNCIAS_AMBIENTAIS A1_INTERDISCIPLINAR A2_GEOCIÊNCIAS A2_CIÊNCIAS_AGRÁRIAS_I B1_ENGENHARIAS_IV B1_BIODIVERSIDADE B1_ENGENHARIAS_II B1_MATEMÁTICA_/_PROBABILIDADE_E B1_ENGENHARIAS_III B2_ASTRONOMIA_/_FÍSICA |
| Histórico (UTC) | 2014-02-06 11:20:43 :: administrator :: 2013 -> 2014 2022-03-18 22:15:37 :: administrator -> marcelo.pazos@inpe.br :: 2014 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Palavras-Chave | lightning high-speed camera leaders |
| Resumo | The aim of this investigation is to analyze the phenomenology of positive and negative (stepped and dart) leaders observed in natural lightning from digital high-speed video recordings. For that intent we have used four different high-speed cameras operating at frame rates ranging from 1000 or 11,800 frames per second in addition to data from lightning locating systems (BrasilDat and NLDN). All the recordings were GPS time-stamped in order to avoid ambiguities in the analysis, allowing us to estimate the peak current of and the distance to each flash that was detected by one of the lightning locating systems. The data collection was done at different sites in south and southeastern of Brazil, southern Arizona and South Dakota, USA. A total of 62 negative stepped leaders, 76 negative dart leaders and 29 positive leaders were recorded and analyzed. From these data it was possible to calculate the two-dimensional speed of each observed leader, allowing us to obtain its statistical distribution and evaluate whether or not it is related to other characteristics of the associated flash. In the analyzed dataset, the speeds of positive leaders and negative dart leaders follow a lognormal distribution at the 0.05 level (according to the Shapiro-Wilk test). We have also analyzed how the two-dimensional leader speeds change as they approach ground through two different methodologies. The speed of positive leaders showed a clear tendency to increase while negative dart leaders tend to become slower as they approach ground. Negative stepped leaders, on the other hand, can either accelerate as they get closer to ground or present an irregular development (with no clear tendency) throughout their entire development. For all the three leader types no correlation has been found between the return stroke peak current and the average speed of the leader responsible for its initiation. We did find, however, that dart leaders preceded by longer interstroke intervals cannot present speeds of the order of 107 m s- 1. Finally, we have analyzed the impact of recoil activity during positive leaders over their average speed and the return stroke peak current. Even though the analysis considering the leader speed was not conclusive it was possible to show that there is no apparent minimum or maximum peak current value for return strokes preceded by leaders with or without recoil activity (considering the most common range of values in literature, 20-80 kA). © 2013 Elsevier B.V. All rights reserved. |
| Área | CEA |
| Arranjo 1 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > GES > High-speed video observations... |
| Arranjo 2 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > COCST > High-speed video observations... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | en |
| Arquivo Alvo | 1-s2.0-S0169809513000057-main.pdf |
| Grupo de Usuários | administrator marcelo.pazos@inpe.br |
| Grupo de Leitores | administrator marcelo.pazos@inpe.br |
| Visibilidade | shown |
| Política de Arquivamento | denypublisher denyfinaldraft24 |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Vinculação | 8JMKD3MGP7W/3BA2MDE |
| Repositório Espelho | iconet.com.br/banon/2006/11.26.21.31 |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3F2PBEE 8JMKD3MGPCW/3F3T29H |
| Lista de Itens Citando | sid.inpe.br/bibdigital/2013/10.19.20.40 3 sid.inpe.br/mtc-m21/2012/07.13.14.54.40 1 sid.inpe.br/bibdigital/2013/10.12.21.02 1 |
| URL (dados não confiáveis) | http://dx.doi.org/10.1016/j.atmosres.2012.12.011 |
| Divulgação | WEBSCI; PORTALCAPES; COMPENDEX; SCOPUS. |
| Acervo Hospedeiro | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 |
| 6. Notas | |
| Campos Vazios | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel format isbn lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarytype |
| 7. Controle da descrição | |
| e-Mail (login) | marcelo.pazos@inpe.br |
| atualizar | |