| 1. Identificação | |
| Tipo de Referência | Artigo em Evento (Conference Proceedings) |
| Site | mtc-m16c.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 8JMKD3MGP8W/35SK9FP |
| Repositório | sid.inpe.br/mtc-m18@80/2009/08.20.19.38 |
| Repositório de Metadados | sid.inpe.br/mtc-m18@80/2009/08.20.19.38.34 |
| Última Atualização dos Metadados | 2020:04.28.17.49.00 (UTC) administrator |
| Chave Secundária | INPE--PRE/ |
| Chave de Citação | MuralikrishnaKulk:2009:RoMeDu |
| Título | Role of meteoric dust in the e-region dynamics  |
| Ano | 2009 |
| Data de Acesso | 09 maio 2024 |
| Tipo Secundário | PRE CI |
| 2. Contextualização | |
| Autor | 1 Muralikrishna, Polinaya 2 Kulkarni, V. H. |
| Grupo | 1 DAE-CEA-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais (INPE) 2 University of Bombay |
| Nome do Evento | Iaga, 2009. |
| Localização do Evento | Sopron, Hungary |
| Data | 23-30 Aug. |
| Título do Livro | Proceedings |
| Histórico (UTC) | 2009-08-20 19:38:34 :: simone -> administrator :: 2020-04-28 17:49:00 :: administrator -> simone :: 2009 |
| 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 | Meteoric Dust E-region dynamics Electrical conductivity Collision frequency |
| Resumo | Dust particles play an important role in the dynamics of the E-region. Ablation of meteors that enter the atmosphere with velocities ¡Ö15 kms-1 is the most important source of these dust particles of micron and submicron sizes. Polar Mesospheric Summer Echoes in the polar region and the blanketing sporadic-E layers in the low latitude E-region are known to be manifestations of dust particles. Large amounts of dust particles with average sizes of about 0.1¦Ì with number densities of up to several thousands per cubic centimeter and charge densities of the same order were detected experimentally. In some parts of the dust layers it was found that the negative charge density on dusts was so large that the number of free electrons was significantly reduced there, since the dust acted as a sink for electrons, thus causing electron bite outs. Recent studies show the possible role of neutral as well as charged dust particles of submicron size in altering the conductivity parameters in the equatorial E-region through the collision frequencies. In the upper E-region the dust particles are not very effective in capturing the ambient electrons and so do not affect the quase neutrality of the plasma. But they can alter the effective collision frequencies of the ambient electrons in this region by a factor as high as 4. They can also reduce significantly the growth rate and amplitude of plasma irregularities in this region. In the lower E-region the dust particles get charged by capturing the ambient electrons and affect significantly the electrical conductivities. When exist in sufficient numbers, charged dust particles can even reverse the ambient vertical polarization electric field in the lower E-region altitudes. Assuming a simple exponential model for the dust layer, the role of these dust particles in altering the E-region dynamics by affecting the collision and conductivity parameters is investigated here. |
| Área | CEA |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDAE > Role of meteoric... |
| 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 | simone administrator |
| Visibilidade | shown |
| Permissão de Leitura | allow from all |
| 5. Fontes relacionadas | |
| Repositório Espelho | sid.inpe.br/mtc-m18@80/2008/03.17.15.17.24 |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ETL868 |
| Acervo Hospedeiro | sid.inpe.br/mtc-m18@80/2008/03.17.15.17 |
| 6. Notas | |
| Campos Vazios | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi e-mailaddress edition editor electronicmailaddress format isbn issn label lineage mark 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 tertiarytype type url versiontype volume |
| 7. Controle da descrição | |
| e-Mail (login) | simone |
| atualizar | |