Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse
- Autores
- Meza, Amalia Margarita; Eylenstein, Bernardo; Natali, María Paula; Bosch, Guillermo Luis; Moirano, Juan Francisco; Chalar, Elfriede
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Total solar eclipses are unique opportunities to study how the ionospheric and external geomagnetic field responds to fast changes in the ionizing flux as the moon’s shadow travels through its path over the ionosphere at an average speed of 3,000 km/h. In this contribution, we describe our observing campaign in which we set up GNSS and geomagnetic stations at the city of Valcheta, Río Negro, Argentina (which was located right under the path of totality). We also describe the results obtained from the analysis of the combination of on-site data together with publicly available observations from geodetic and geomagnetic observatories. The large span in latitude of our data allowed us to analyze the different magnitudes of the drop in vertical total electron content (ΔVTEC) with varying occultation percentages. We found an expected reduction in this drop as we move away from totality path but we also detected a new increment in ΔVTEC as we got closer to Earth’s Magnetic Equator. We also compared our observations of the geomagnetic field variations with predictions that were based on the Ashour-Chapman model and we find an overall good agreement, although a ≈20 min delay with the eclipse maximum is evident beyond observing uncertainties. This suggests the presence of processes that delay the response of the lower ionosphere to the loss of the photoionization flux.
Laboratorio de Meteorología espacial, Atmósfera terrestre, Geodesia, Geodinámica, diseño de Instrumental y Astrometría
Instituto de Astrofísica de La Plata - Materia
-
Astronomía
Física
Solar eclipses
Earth ionosphere
F-layer
E-layer
Geomagnetic fields - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/130018
Ver los metadatos del registro completo
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Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar EclipseMeza, Amalia MargaritaEylenstein, BernardoNatali, María PaulaBosch, Guillermo LuisMoirano, Juan FranciscoChalar, ElfriedeAstronomíaFísicaSolar eclipsesEarth ionosphereF-layerE-layerGeomagnetic fieldsTotal solar eclipses are unique opportunities to study how the ionospheric and external geomagnetic field responds to fast changes in the ionizing flux as the moon’s shadow travels through its path over the ionosphere at an average speed of 3,000 km/h. In this contribution, we describe our observing campaign in which we set up GNSS and geomagnetic stations at the city of Valcheta, Río Negro, Argentina (which was located right under the path of totality). We also describe the results obtained from the analysis of the combination of on-site data together with publicly available observations from geodetic and geomagnetic observatories. The large span in latitude of our data allowed us to analyze the different magnitudes of the drop in vertical total electron content (ΔVTEC) with varying occultation percentages. We found an expected reduction in this drop as we move away from totality path but we also detected a new increment in ΔVTEC as we got closer to Earth’s Magnetic Equator. We also compared our observations of the geomagnetic field variations with predictions that were based on the Ashour-Chapman model and we find an overall good agreement, although a ≈20 min delay with the eclipse maximum is evident beyond observing uncertainties. This suggests the presence of processes that delay the response of the lower ionosphere to the loss of the photoionization flux.Laboratorio de Meteorología espacial, Atmósfera terrestre, Geodesia, Geodinámica, diseño de Instrumental y AstrometríaInstituto de Astrofísica de La Plata2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/130018enginfo:eu-repo/semantics/altIdentifier/issn/2296-987Xinfo:eu-repo/semantics/altIdentifier/doi/10.3389/fspas.2021.766327info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:41Zoai:sedici.unlp.edu.ar:10915/130018Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:42.153SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse |
title |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse |
spellingShingle |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse Meza, Amalia Margarita Astronomía Física Solar eclipses Earth ionosphere F-layer E-layer Geomagnetic fields |
title_short |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse |
title_full |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse |
title_fullStr |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse |
title_full_unstemmed |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse |
title_sort |
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse |
dc.creator.none.fl_str_mv |
Meza, Amalia Margarita Eylenstein, Bernardo Natali, María Paula Bosch, Guillermo Luis Moirano, Juan Francisco Chalar, Elfriede |
author |
Meza, Amalia Margarita |
author_facet |
Meza, Amalia Margarita Eylenstein, Bernardo Natali, María Paula Bosch, Guillermo Luis Moirano, Juan Francisco Chalar, Elfriede |
author_role |
author |
author2 |
Eylenstein, Bernardo Natali, María Paula Bosch, Guillermo Luis Moirano, Juan Francisco Chalar, Elfriede |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Astronomía Física Solar eclipses Earth ionosphere F-layer E-layer Geomagnetic fields |
topic |
Astronomía Física Solar eclipses Earth ionosphere F-layer E-layer Geomagnetic fields |
dc.description.none.fl_txt_mv |
Total solar eclipses are unique opportunities to study how the ionospheric and external geomagnetic field responds to fast changes in the ionizing flux as the moon’s shadow travels through its path over the ionosphere at an average speed of 3,000 km/h. In this contribution, we describe our observing campaign in which we set up GNSS and geomagnetic stations at the city of Valcheta, Río Negro, Argentina (which was located right under the path of totality). We also describe the results obtained from the analysis of the combination of on-site data together with publicly available observations from geodetic and geomagnetic observatories. The large span in latitude of our data allowed us to analyze the different magnitudes of the drop in vertical total electron content (ΔVTEC) with varying occultation percentages. We found an expected reduction in this drop as we move away from totality path but we also detected a new increment in ΔVTEC as we got closer to Earth’s Magnetic Equator. We also compared our observations of the geomagnetic field variations with predictions that were based on the Ashour-Chapman model and we find an overall good agreement, although a ≈20 min delay with the eclipse maximum is evident beyond observing uncertainties. This suggests the presence of processes that delay the response of the lower ionosphere to the loss of the photoionization flux. Laboratorio de Meteorología espacial, Atmósfera terrestre, Geodesia, Geodinámica, diseño de Instrumental y Astrometría Instituto de Astrofísica de La Plata |
description |
Total solar eclipses are unique opportunities to study how the ionospheric and external geomagnetic field responds to fast changes in the ionizing flux as the moon’s shadow travels through its path over the ionosphere at an average speed of 3,000 km/h. In this contribution, we describe our observing campaign in which we set up GNSS and geomagnetic stations at the city of Valcheta, Río Negro, Argentina (which was located right under the path of totality). We also describe the results obtained from the analysis of the combination of on-site data together with publicly available observations from geodetic and geomagnetic observatories. The large span in latitude of our data allowed us to analyze the different magnitudes of the drop in vertical total electron content (ΔVTEC) with varying occultation percentages. We found an expected reduction in this drop as we move away from totality path but we also detected a new increment in ΔVTEC as we got closer to Earth’s Magnetic Equator. We also compared our observations of the geomagnetic field variations with predictions that were based on the Ashour-Chapman model and we find an overall good agreement, although a ≈20 min delay with the eclipse maximum is evident beyond observing uncertainties. This suggests the presence of processes that delay the response of the lower ionosphere to the loss of the photoionization flux. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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http://sedici.unlp.edu.ar/handle/10915/130018 |
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dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/2296-987X info:eu-repo/semantics/altIdentifier/doi/10.3389/fspas.2021.766327 |
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openAccess |
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http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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