Ionospheric and geomagnetic response to the total solar eclipse on 21 August 2017

Solar eclipses provide an excellent opportunity to study the effects of a sudden localized change in photoionization flux in the Earth’s ionosphere and its consequent repercussion in the Geomagnetic field. We have focused on a subset of the data available from the North American 2017 eclipse in orde...

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Autores principales: Meza, Amalia Margarita, Bosch, Guillermo Luis, Natali, María Paula, Eylenstein, Bernardo
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2021
Materias:
Astronomía
Geofísica
total solar eclipse
VTEC from GNSS
geomagnetic field variation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/139844
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-139844
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Geofísica
total solar eclipse
VTEC from GNSS
geomagnetic field variation
spellingShingle Astronomía
Geofísica
total solar eclipse
VTEC from GNSS
geomagnetic field variation
Meza, Amalia Margarita
Bosch, Guillermo Luis
Natali, María Paula
Eylenstein, Bernardo
Ionospheric and geomagnetic response to the total solar eclipse on 21 August 2017
topic_facet Astronomía
Geofísica
total solar eclipse
VTEC from GNSS
geomagnetic field variation
description Solar eclipses provide an excellent opportunity to study the effects of a sudden localized change in photoionization flux in the Earth’s ionosphere and its consequent repercussion in the Geomagnetic field. We have focused on a subset of the data available from the North American 2017 eclipse in order to study VTEC measurements from GNSS data and geomagnetic field estimations from INTERMAGNET observatories near the eclipse path. Our simultaneous analysis of both datasets allowed us to quantify the ionosphere and magnetic field reaction to the eclipse event with which allowed us to compare how differently these take place in time. We found that studying the behaviour of VTEC differences with respect to reference values provides better insight of the actual eclipse effect and were able to characterize the dependence of parameters such as time delay of maximum depletion and recovery phase. We were also able to test models that link the ionospheric variations in a quantitative manner. Total electron content depletion measured from GNSS were fed into an approximation of Ashour-Chapman model at the locations of geomagnetic observatories and its predictions match the behaviour of magnetic field components in time and magnitude strikingly accurately.
format Articulo
Preprint
author Meza, Amalia Margarita
Bosch, Guillermo Luis
Natali, María Paula
Eylenstein, Bernardo
author_facet Meza, Amalia Margarita
Bosch, Guillermo Luis
Natali, María Paula
Eylenstein, Bernardo
author_sort Meza, Amalia Margarita
title Ionospheric and geomagnetic response to the total solar eclipse on 21 August 2017
title_short Ionospheric and geomagnetic response to the total solar eclipse on 21 August 2017
title_full Ionospheric and geomagnetic response to the total solar eclipse on 21 August 2017
title_fullStr Ionospheric and geomagnetic response to the total solar eclipse on 21 August 2017
title_full_unstemmed Ionospheric and geomagnetic response to the total solar eclipse on 21 August 2017
title_sort ionospheric and geomagnetic response to the total solar eclipse on 21 august 2017
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/139844
work_keys_str_mv AT mezaamaliamargarita ionosphericandgeomagneticresponsetothetotalsolareclipseon21august2017
AT boschguillermoluis ionosphericandgeomagneticresponsetothetotalsolareclipseon21august2017
AT natalimariapaula ionosphericandgeomagneticresponsetothetotalsolareclipseon21august2017
AT eylensteinbernardo ionosphericandgeomagneticresponsetothetotalsolareclipseon21august2017
bdutipo_str Repositorios
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