دورية أكاديمية
Longitudinal variations of ionospheric parameters near totality during the eclipse of December 14, 2020
| العنوان: | Longitudinal variations of ionospheric parameters near totality during the eclipse of December 14, 2020 |
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| المؤلفون: | 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. |
| بيانات النشر: | Elsevier |
| المجموعة: | CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
| مصطلحات موضوعية: | ECLIPSE, IONOSPHERIC PARAMETERS, LONGITUDINAL VARIATIONS, SOUTH AMERICAN STATIONS, https://purl.org/becyt/ford/1.5Test, https://purl.org/becyt/ford/1Test |
| الوصف: | 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 and F1-layer with values of α ∼10−9 cm3 s−1 and for F2-layer with values in β ∼10−4 s−1, similar to previous studies. Longitudinal differences between both ionospheric stations are very small for the F1-layer (∼11%), but a much larger variability is found at F2-layer critical frequencies (∼20%). These results suggest different plasma diffusion processes at high altitudes in the different locations that require further investigation in future studies. ; Fil: de Haro Barbás, Blas Federico. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina ; Fil: Bravo Sepulveda, Manuel Alejandro. Universidad de Concepción; Chile ; Fil: Elias, Ana Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina ; Fil: Martínez Ledesma, Miguel. Universidad de Concepción; Chile. Centro Interuniversitario de Física de la Alta Atmósfera; Chile ; Fil: Molina, Maria Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología; Argentina ; Fil: Urra, ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0273-1177 |
| العلاقة: | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0273117721009364Test; http://hdl.handle.net/11336/151613Test; de Haro Barbás, Blas Federico; Bravo Sepulveda, Manuel Alejandro; Elias, Ana Georgina; Martínez Ledesma, Miguel; Molina, Maria Graciela; et al.; Longitudinal variations of ionospheric parameters near totality during the eclipse of December 14, 2020; Elsevier; Advances in Space Research; 2021; 12-2021; 1-10; CONICET Digital; CONICET |
| الإتاحة: | https://doi.org/10.1016/j.asr.2021.12.026Test http://hdl.handle.net/11336/151613Test |
| حقوق: | info:eu-repo/semantics/restrictedAccess ; https://creativecommons.org/licenses/by-nc-sa/2.5/arTest/ |
| رقم الانضمام: | edsbas.F95778C9 |
| قاعدة البيانات: | BASE |
| تدمد: | 02731177 |
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