dor_id: 4132860

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336.#.#.a: Artículo

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351.#.#.b: Geofísica Internacional

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harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

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856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/668/668

100.1.#.a: Batista, I. S.; Balan, N.; Abdu, M. A.; Macdougall, J.; Barbosa Neto, P. F.

524.#.#.a: Batista, I. S., et al. (2000). F3 layer observations at low and equatorial latitudes in Brazil. Geofísica Internacional; Vol. 39 Núm. 1: Enero 1, 2000; 57-64. Recuperado de https://repositorio.unam.mx/contenidos/4132860

245.1.0.a: F3 layer observations at low and equatorial latitudes in Brazil

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2000

264.#.1.c: 2000-01-01

653.#.#.a: Ionosfera; capa F; baja latitud; Ionosphere; F Layer; low latitudes

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

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041.#.7.h: spa

520.3.#.a: Recent studies using model calculation and ionospheric observations have revealed the existence of an additional layer in the topside equatorial ionosphere, the F
Brazil, during the year 1995, a low solar activity period, in order to study the F layer at those locations. At the magnetic station 3São Luís (2.3° S, 44° W, dip angle –0.5°) the occurrence of the F3 layer is much less evident than at the low latitude station Fortaleza (4° S, 38° W, dip angle –9°). The ionograms recorded at Fortaleza in 1995 show the existence of the layer on 50% of the days, with the occurrence being more frequent (75%) and distinct in summer. The layer appears on 66% of the days in winter and 28% in equinoxes. The layer starts to appear around 0930 LT and lasts from a few minutes to several hours. Its mean height varies from 570 km in summer to 440 km in winter, although on a day to day basis it can vary from as low as 375 km to 775 km. The ionospheric model SUPIM (Sheffield University Plasmasphere-Ionosphere Model) explains well the occurrence of the layer in summer, but not in winter, unless some key input parameters, such as electric field and winds are modified. This suggests that the existing models for electric fields and winds are not representative for the Brazilian low latitude region during winter.doi: https://doi.org/10.22201/igeof.00167169p.2000.39.1.297

773.1.#.t: Geofísica Internacional; Vol. 39 Núm. 1: Enero 1, 2000; 57-64

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

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doi: https://doi.org/10.22201/igeof.00167169p.2000.39.1.297

handle: 00cbe73965f01e97

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2000-07-07 13:50:59.0

file_modification_date: 2022-07-13 16:21:07.0

file_creator: I. S. Batista

file_name: 7f3847d3eeb260ff5ac068fb4639c1668928572e0bfdfd47300a2bb3e5d0554f.pdf

file_pages_number: 8

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file_size: 195295

245.1.0.b: F3 layer observations at low and equatorial latitudes in Brazil

last_modified: 2023-06-20 16:00:00

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Artículo

F3 layer observations at low and equatorial latitudes in Brazil

Batista, I. S.; Balan, N.; Abdu, M. A.; Macdougall, J.; Barbosa Neto, P. F.

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Batista, I. S., et al. (2000). F3 layer observations at low and equatorial latitudes in Brazil. Geofísica Internacional; Vol. 39 Núm. 1: Enero 1, 2000; 57-64. Recuperado de https://repositorio.unam.mx/contenidos/4132860

Descripción del recurso

Autor(es)
Batista, I. S.; Balan, N.; Abdu, M. A.; Macdougall, J.; Barbosa Neto, P. F.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
F3 layer observations at low and equatorial latitudes in Brazil
Fecha
2000-01-01
Resumen
Recent studies using model calculation and ionospheric observations have revealed the existence of an additional layer in the topside equatorial ionosphere, the F
Brazil, during the year 1995, a low solar activity period, in order to study the F layer at those locations. At the magnetic station 3São Luís (2.3° S, 44° W, dip angle –0.5°) the occurrence of the F3 layer is much less evident than at the low latitude station Fortaleza (4° S, 38° W, dip angle –9°). The ionograms recorded at Fortaleza in 1995 show the existence of the layer on 50% of the days, with the occurrence being more frequent (75%) and distinct in summer. The layer appears on 66% of the days in winter and 28% in equinoxes. The layer starts to appear around 0930 LT and lasts from a few minutes to several hours. Its mean height varies from 570 km in summer to 440 km in winter, although on a day to day basis it can vary from as low as 375 km to 775 km. The ionospheric model SUPIM (Sheffield University Plasmasphere-Ionosphere Model) explains well the occurrence of the layer in summer, but not in winter, unless some key input parameters, such as electric field and winds are modified. This suggests that the existing models for electric fields and winds are not representative for the Brazilian low latitude region during winter.doi: https://doi.org/10.22201/igeof.00167169p.2000.39.1.297
Tema
Ionosfera; capa F; baja latitud; Ionosphere; F Layer; low latitudes
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

Enlaces