1999
DOI: 10.1590/s0102-261x1999000100002
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Algoritmo para completar series de valores de la frecuencia crítica de la región F de la ionósfera sobre Concepción, Chile

Abstract: Se usa la serie incompleta de valores horarios de la foF2 sobre Concepción (36.8º S; 73.0º O), observados en el intervalo 1958 -1989, para determinar inicialmente una serie completa de valores horarios de foF2 que pueden considerarse representativos de condiciones geomagnéticas quietas, pero que toma en cuenta las dependencias de la foF2 con la estación del año y con el nivel de actividad solar. Luego se propone un algoritmo para calcular valores horarios faltantes en el intervalo, en que sí se toma en cuenta … Show more

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“…Before dawn Spread F continue to be present, thus no foF2 or M3000F2 can be determined. The afternoon clear increase of foF2 and M3000F2 decrease most of the day hours is typical of Concepció n F-region storm time (see Arriagada and Foppiano (1999)). The ionosonde observations are not available for three hours before midnight.…”
Section: Variability Statistics and Thresholdsmentioning
confidence: 88%
“…Before dawn Spread F continue to be present, thus no foF2 or M3000F2 can be determined. The afternoon clear increase of foF2 and M3000F2 decrease most of the day hours is typical of Concepció n F-region storm time (see Arriagada and Foppiano (1999)). The ionosonde observations are not available for three hours before midnight.…”
Section: Variability Statistics and Thresholdsmentioning
confidence: 88%