Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere
- Autores
- Fagre, Mariano; Zossi, Bruno Santiago; Yiğit, Erdal; Amit, Hagay; Elias, Ana Georgina
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The ionosphere is an anisotropic, dispersive medium for the propagation of radio frequency electromagnetic waves due to the presence of the Earth?s intrinsic magnetic field and free charges. The detailed physics of electromagnetic wavepropagation through a plasma is more complex when it is embedded in a magnetic field. In particular, the ground range of waves reflecting in the ionosphere presents detectable magnetic field effects. Earth?s magnetic field varies greatly, with the most drastic scenario being a polarity reversal. Here the spatial variability of the ground range is analyzed using numerical ray tracing under possible reversal scenarios. Pattern changes of the ?spitze?, a cusp in the ray path closely related to the geomagnetic field, are also assessed. The ground range increases with magnetic field intensity and ray alignment with the field direction. For the present field, which is almost axial dipolar, this happens for Northward propagation at the magnetic equator, peaking in Indonesia where the intensity is least weak along the equator. A similar situation occurs for a prevailing equatorial dipole with Eastward ray paths at the corresponding magnetic equator that here runs almost perpendicular to the geographic equator. Larger spitze angles occur for smaller magnetic inclinations, and higher intensities. This is clearly observed for the present field and the dipole rotation scenario along the corresponding magnetic equators. For less dipolar configurations the ground range and spitze spatial variabilities become smaller scale. Overall, studying ionospheric dynamics during a reversal may highlight possible effects of dipole decrease which is currently ongoing.
Fil: Fagre, Mariano. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Electricidad, Electrónica y Computación. Laboratorio de Telecomunicaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Zossi, Bruno Santiago. Universidad Nacional de Tucumán. Instituto de Física del Noroeste Argentino. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Física del Noroeste Argentino; Argentina
Fil: Yiğit, Erdal. George Mason University; Estados Unidos
Fil: Amit, Hagay. Cnrs- S, Laboratoire de Planetologie Et de Geodyn; Francia
Fil: Elias, Ana Georgina. Universidad Nacional de Tucumán. Instituto de Física del Noroeste Argentino. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Física del Noroeste Argentino; Argentina - Materia
-
RAY TRACING
IONOSPHERE
EARTH'S MAGNETIC FIELD
POLARITY REVERSAL - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/113782
Ver los metadatos del registro completo
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CONICET Digital (CONICET) |
spelling |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphereFagre, MarianoZossi, Bruno SantiagoYiğit, ErdalAmit, HagayElias, Ana GeorginaRAY TRACINGIONOSPHEREEARTH'S MAGNETIC FIELDPOLARITY REVERSALhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The ionosphere is an anisotropic, dispersive medium for the propagation of radio frequency electromagnetic waves due to the presence of the Earth?s intrinsic magnetic field and free charges. The detailed physics of electromagnetic wavepropagation through a plasma is more complex when it is embedded in a magnetic field. In particular, the ground range of waves reflecting in the ionosphere presents detectable magnetic field effects. Earth?s magnetic field varies greatly, with the most drastic scenario being a polarity reversal. Here the spatial variability of the ground range is analyzed using numerical ray tracing under possible reversal scenarios. Pattern changes of the ?spitze?, a cusp in the ray path closely related to the geomagnetic field, are also assessed. The ground range increases with magnetic field intensity and ray alignment with the field direction. For the present field, which is almost axial dipolar, this happens for Northward propagation at the magnetic equator, peaking in Indonesia where the intensity is least weak along the equator. A similar situation occurs for a prevailing equatorial dipole with Eastward ray paths at the corresponding magnetic equator that here runs almost perpendicular to the geographic equator. Larger spitze angles occur for smaller magnetic inclinations, and higher intensities. This is clearly observed for the present field and the dipole rotation scenario along the corresponding magnetic equators. For less dipolar configurations the ground range and spitze spatial variabilities become smaller scale. Overall, studying ionospheric dynamics during a reversal may highlight possible effects of dipole decrease which is currently ongoing.Fil: Fagre, Mariano. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Electricidad, Electrónica y Computación. Laboratorio de Telecomunicaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Zossi, Bruno Santiago. Universidad Nacional de Tucumán. Instituto de Física del Noroeste Argentino. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Física del Noroeste Argentino; ArgentinaFil: Yiğit, Erdal. George Mason University; Estados UnidosFil: Amit, Hagay. Cnrs- S, Laboratoire de Planetologie Et de Geodyn; FranciaFil: Elias, Ana Georgina. Universidad Nacional de Tucumán. Instituto de Física del Noroeste Argentino. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Física del Noroeste Argentino; ArgentinaEuropean Geosciences Union2019-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/113782Fagre, Mariano; Zossi, Bruno Santiago; Yiğit, Erdal; Amit, Hagay; Elias, Ana Georgina; Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere; European Geosciences Union; Annales Geophysicae Discussions; 2-2019; 1-232568-6402CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://angeo.copernicus.org/preprints/angeo-2019-27/angeo-2019-27.pdfinfo:eu-repo/semantics/altIdentifier/doi/10.5194/angeo-2019-27info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:42Zoai:ri.conicet.gov.ar:11336/113782instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:55:42.859CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere |
title |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere |
spellingShingle |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere Fagre, Mariano RAY TRACING IONOSPHERE EARTH'S MAGNETIC FIELD POLARITY REVERSAL |
title_short |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere |
title_full |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere |
title_fullStr |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere |
title_full_unstemmed |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere |
title_sort |
Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere |
dc.creator.none.fl_str_mv |
Fagre, Mariano Zossi, Bruno Santiago Yiğit, Erdal Amit, Hagay Elias, Ana Georgina |
author |
Fagre, Mariano |
author_facet |
Fagre, Mariano Zossi, Bruno Santiago Yiğit, Erdal Amit, Hagay Elias, Ana Georgina |
author_role |
author |
author2 |
Zossi, Bruno Santiago Yiğit, Erdal Amit, Hagay Elias, Ana Georgina |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
RAY TRACING IONOSPHERE EARTH'S MAGNETIC FIELD POLARITY REVERSAL |
topic |
RAY TRACING IONOSPHERE EARTH'S MAGNETIC FIELD POLARITY REVERSAL |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The ionosphere is an anisotropic, dispersive medium for the propagation of radio frequency electromagnetic waves due to the presence of the Earth?s intrinsic magnetic field and free charges. The detailed physics of electromagnetic wavepropagation through a plasma is more complex when it is embedded in a magnetic field. In particular, the ground range of waves reflecting in the ionosphere presents detectable magnetic field effects. Earth?s magnetic field varies greatly, with the most drastic scenario being a polarity reversal. Here the spatial variability of the ground range is analyzed using numerical ray tracing under possible reversal scenarios. Pattern changes of the ?spitze?, a cusp in the ray path closely related to the geomagnetic field, are also assessed. The ground range increases with magnetic field intensity and ray alignment with the field direction. For the present field, which is almost axial dipolar, this happens for Northward propagation at the magnetic equator, peaking in Indonesia where the intensity is least weak along the equator. A similar situation occurs for a prevailing equatorial dipole with Eastward ray paths at the corresponding magnetic equator that here runs almost perpendicular to the geographic equator. Larger spitze angles occur for smaller magnetic inclinations, and higher intensities. This is clearly observed for the present field and the dipole rotation scenario along the corresponding magnetic equators. For less dipolar configurations the ground range and spitze spatial variabilities become smaller scale. Overall, studying ionospheric dynamics during a reversal may highlight possible effects of dipole decrease which is currently ongoing. Fil: Fagre, Mariano. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Electricidad, Electrónica y Computación. Laboratorio de Telecomunicaciones; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina Fil: Zossi, Bruno Santiago. Universidad Nacional de Tucumán. Instituto de Física del Noroeste Argentino. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Física del Noroeste Argentino; Argentina Fil: Yiğit, Erdal. George Mason University; Estados Unidos Fil: Amit, Hagay. Cnrs- S, Laboratoire de Planetologie Et de Geodyn; Francia Fil: Elias, Ana Georgina. Universidad Nacional de Tucumán. Instituto de Física del Noroeste Argentino. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Instituto de Física del Noroeste Argentino; Argentina |
description |
The ionosphere is an anisotropic, dispersive medium for the propagation of radio frequency electromagnetic waves due to the presence of the Earth?s intrinsic magnetic field and free charges. The detailed physics of electromagnetic wavepropagation through a plasma is more complex when it is embedded in a magnetic field. In particular, the ground range of waves reflecting in the ionosphere presents detectable magnetic field effects. Earth?s magnetic field varies greatly, with the most drastic scenario being a polarity reversal. Here the spatial variability of the ground range is analyzed using numerical ray tracing under possible reversal scenarios. Pattern changes of the ?spitze?, a cusp in the ray path closely related to the geomagnetic field, are also assessed. The ground range increases with magnetic field intensity and ray alignment with the field direction. For the present field, which is almost axial dipolar, this happens for Northward propagation at the magnetic equator, peaking in Indonesia where the intensity is least weak along the equator. A similar situation occurs for a prevailing equatorial dipole with Eastward ray paths at the corresponding magnetic equator that here runs almost perpendicular to the geographic equator. Larger spitze angles occur for smaller magnetic inclinations, and higher intensities. This is clearly observed for the present field and the dipole rotation scenario along the corresponding magnetic equators. For less dipolar configurations the ground range and spitze spatial variabilities become smaller scale. Overall, studying ionospheric dynamics during a reversal may highlight possible effects of dipole decrease which is currently ongoing. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-02 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/113782 Fagre, Mariano; Zossi, Bruno Santiago; Yiğit, Erdal; Amit, Hagay; Elias, Ana Georgina; Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere; European Geosciences Union; Annales Geophysicae Discussions; 2-2019; 1-23 2568-6402 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/113782 |
identifier_str_mv |
Fagre, Mariano; Zossi, Bruno Santiago; Yiğit, Erdal; Amit, Hagay; Elias, Ana Georgina; Effects of Earth's magnetic field variation on high frequency wave propagation in the ionosphere; European Geosciences Union; Annales Geophysicae Discussions; 2-2019; 1-23 2568-6402 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://angeo.copernicus.org/preprints/angeo-2019-27/angeo-2019-27.pdf info:eu-repo/semantics/altIdentifier/doi/10.5194/angeo-2019-27 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
European Geosciences Union |
publisher.none.fl_str_mv |
European Geosciences Union |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613677627473920 |
score |
13.070432 |