Plasma channels in the Venus upper ionosphere
The structure of the Venus nightside ionosphere is modeled in terms of a flow configuration derived from the position of the intermediate transition along the flanks of the ionosheath downstream from the magnetic polar regions. It is suggested that the shocked solar wind erodes more strongly the pol...
| Autor: | |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2001 |
| País: | México |
| Institución: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Geofísica Internacional |
| Idioma: | español |
| OAI Identifier: | oai:revistagi.geofisica.unam.mx:article/715 |
| Acceso en línea: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/715 |
| Access Level: | acceso abierto |
| Palabra clave: | Ionosfera de Venus canales de plasma agujeros ionosféricos Venus ionosphere plasma channels ionospheric holes |
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Plasma channels in the Venus upper ionospherePlasma channels in the Venus upper ionospherePérez de Tejada, H.Ionosfera de Venuscanales de plasmaagujeros ionosféricosVenus ionosphereplasma channelsionospheric holesThe structure of the Venus nightside ionosphere is modeled in terms of a flow configuration derived from the position of the intermediate transition along the flanks of the ionosheath downstream from the magnetic polar regions. It is suggested that the shocked solar wind erodes more strongly the polar ionosphere producing plasma channels that extend downstream from the magnetic polar regions. Such features represent the main source of mass loss along the plasma tail and imply a small overall solar wind-induced depletion of the planetary ionosphere. The plasma channels can account for the observation of ionospheric holes in PVO passes through the Venus wake. The expected flow distribution within the wake is consistent with the entry of plasma fluxes from the magnetic polar regions that was suggested earlier to account for geometry of the nightside ionopause (Pérez de Tejada, 1980).Se modela la estructura de la ionosfera nocturna del planeta Venus con base en una configuración de flujo derivada de la posición de la transición intermedia en la región de transición con el viento solar. Se infiere que el viento solar erosiona la ionosfera del planeta alrededor de las regiones magnéticas polares en donde se producen conductos de plasma en forma de canales que se extienden hacia el hemisferio noche. Los canales de plasma dan lugar a una pérdida limitada de material ionosférico, el cual, se distribuye en una geometría asimétrica a través de su estela. La posición de los canales permite la observación de los agujeros ionosféricos detectados a lo largo de la trayectoria del vehículo espacial Pionero Venus. Estos eventos resultan del cruce del vehículo a través de los canales de plasma dependiendo de la orientación de su trayectoria. La distribución de flujo dentro de la estela es consistente con la entrada de plasma desde los polos magnéticos que fue propuesta para explicar la geometría de la ionopausa nocturna (Pérez de Tejada, 1980).Universidad Nacional Autónoma de México. Instituto de Geofísica2001-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/71510.22201/igeof.00167169p.2001.40.1.419Geofisica Internacional; Vol. 40 No. 1 (2001): January 1, 2001; 43-52Geofísica Internacional; Vol. 40 Núm. 1 (2001): Enero 1, 2001; 43-522954-436X0016-716910.22201/igeof.00167169p.2001.40.1reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspahttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/715/706https://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/7152024-08-16T17:31:57Z |
| dc.title.none.fl_str_mv |
Plasma channels in the Venus upper ionosphere Plasma channels in the Venus upper ionosphere |
| title |
Plasma channels in the Venus upper ionosphere |
| spellingShingle |
Plasma channels in the Venus upper ionosphere Pérez de Tejada, H. Ionosfera de Venus canales de plasma agujeros ionosféricos Venus ionosphere plasma channels ionospheric holes |
| title_short |
Plasma channels in the Venus upper ionosphere |
| title_full |
Plasma channels in the Venus upper ionosphere |
| title_fullStr |
Plasma channels in the Venus upper ionosphere |
| title_full_unstemmed |
Plasma channels in the Venus upper ionosphere |
| title_sort |
Plasma channels in the Venus upper ionosphere |
| dc.creator.none.fl_str_mv |
Pérez de Tejada, H. |
| author |
Pérez de Tejada, H. |
| author_facet |
Pérez de Tejada, H. |
| author_role |
author |
| dc.subject.none.fl_str_mv |
Ionosfera de Venus canales de plasma agujeros ionosféricos Venus ionosphere plasma channels ionospheric holes |
| topic |
Ionosfera de Venus canales de plasma agujeros ionosféricos Venus ionosphere plasma channels ionospheric holes |
| description |
The structure of the Venus nightside ionosphere is modeled in terms of a flow configuration derived from the position of the intermediate transition along the flanks of the ionosheath downstream from the magnetic polar regions. It is suggested that the shocked solar wind erodes more strongly the polar ionosphere producing plasma channels that extend downstream from the magnetic polar regions. Such features represent the main source of mass loss along the plasma tail and imply a small overall solar wind-induced depletion of the planetary ionosphere. The plasma channels can account for the observation of ionospheric holes in PVO passes through the Venus wake. The expected flow distribution within the wake is consistent with the entry of plasma fluxes from the magnetic polar regions that was suggested earlier to account for geometry of the nightside ionopause (Pérez de Tejada, 1980). |
| publishDate |
2001 |
| dc.date.none.fl_str_mv |
2001-01-01 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/715 10.22201/igeof.00167169p.2001.40.1.419 |
| url |
http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/715 |
| identifier_str_mv |
10.22201/igeof.00167169p.2001.40.1.419 |
| dc.language.none.fl_str_mv |
spa |
| language |
spa |
| dc.relation.none.fl_str_mv |
http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/715/706 |
| dc.rights.none.fl_str_mv |
https://creativecommons.org/licenses/by-nc-sa/4.0/ info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Universidad Nacional Autónoma de México. Instituto de Geofísica |
| publisher.none.fl_str_mv |
Universidad Nacional Autónoma de México. Instituto de Geofísica |
| dc.source.none.fl_str_mv |
Geofisica Internacional; Vol. 40 No. 1 (2001): January 1, 2001; 43-52 Geofísica Internacional; Vol. 40 Núm. 1 (2001): Enero 1, 2001; 43-52 2954-436X 0016-7169 10.22201/igeof.00167169p.2001.40.1 reponame:Geofísica Internacional instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO instacron:UNAM |
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UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
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UNAM |
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UNAM |
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Geofísica Internacional |
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Geofísica Internacional |
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1858174388095942656 |
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15.811543 |