Longitudinal variations of ionospheric parameters near totality during the eclipse of December 14, 2020
- de Haro Barbás, Blas Federico
- Bravo Sepulveda, Manuel Alejandro
- Elias, Ana Georgina
- Martínez Ledesma, Miguel
- Molina, Maria Graciela
- Urra, B.
- Venchiarutti, José Valentín
- Villalobos, C.
- Namour, Jorge Habib
- Ovalle, Elías M.
- Guillermo, Eduardo Daniel
- Carrasco, E.
- de Pasquale, Lorenzo
- Rojo, E.
- Leiva, R.
DOIAbstract
On December 14, 2020, a total solar eclipse occurred whose shadow cone projected over part of South America. Its effect on critical ionospheric frequencies variability is analysed, considering two stations with similar geographical latitudes and a 95% obscuration percentage: Chillán (36.6°S, 72.0°W), in Chile, and Bahía Blanca (38.9°S, 62.2°W), in Argentina. A comparison of the ionospheric response to the eclipse is made with quiet time daily values and the IRI-2016 model. Results indicate that the greatest eclipse impacts are obtained in foE and foF1, with ∼31% and ∼40% of maximum reductions, respectively. Alternatively, weak disturbances are observed in the foF2 case (<20%). The recombination coefficients were calculated for the E- layer ...
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