Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse

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...

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Detalles Bibliográficos
Autores principales: Meza, Amalia Margarita, Eylenstein, Bernardo, Natali, María Paula, Bosch, Guillermo Luis, Moirano, Juan Francisco, Chalar, Elfriede
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Astronomía
Física
Solar eclipses
Earth ionosphere
F-layer
E-layer
Geomagnetic fields
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/130018
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-130018
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Física
Solar eclipses
Earth ionosphere
F-layer
E-layer
Geomagnetic fields
spellingShingle Astronomía
Física
Solar eclipses
Earth ionosphere
F-layer
E-layer
Geomagnetic fields
Meza, Amalia Margarita
Eylenstein, Bernardo
Natali, María Paula
Bosch, Guillermo Luis
Moirano, Juan Francisco
Chalar, Elfriede
Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse
topic_facet Astronomía
Física
Solar eclipses
Earth ionosphere
F-layer
E-layer
Geomagnetic fields
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.
format Articulo
Articulo
author Meza, Amalia Margarita
Eylenstein, Bernardo
Natali, María Paula
Bosch, Guillermo Luis
Moirano, Juan Francisco
Chalar, Elfriede
author_facet Meza, Amalia Margarita
Eylenstein, Bernardo
Natali, María Paula
Bosch, Guillermo Luis
Moirano, Juan Francisco
Chalar, Elfriede
author_sort Meza, Amalia Margarita
title Analysis of Ionospheric and Geomagnetic Response to the 2020 Patagonian Solar Eclipse
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
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/130018
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bdutipo_str Repositorios
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