Ionospheric effects of volcanic eruptions
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| Format: | Artículo científico |
| Langue: | en |
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Universidad Nacional Autónoma de México
2004
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| _version_ | 1876456933251088384 |
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| author | Argelia H.C. de Ragone |
| author_facet | Argelia H.C. de Ragone |
| contents | Ionospheric effects of volcanic eruptions Argelia H.C. de Ragone Amalia N. F. de Manzano Marta Z. de Artigas Ana G. Elias Ciencias de la Tierra ionosphere Volcanic eruption F2 critical frequency F layer virtual height Ionospheric effects of Mount Pinatubo volcanic eruption in June 1991 were recorded on 1-minute interval soundings madeby stations north of the volcano. Disturbances characterized by quasi-periodic wavelike trains were detected. They were attributedto gravity waves generated by the eruption, and its characteristics were determined. We search for similar ionospheric disturbancescaused by volcanic eruptions in North and South America, based on hourly F2 critical frequency (foF2) and F layer virtualheight (hF) data. The study was carried out for quiet magnetic activity levels. All eruptions reached the Pinatubo intensity. Adecrease of foF2 and of its amplitude of variation, and an increase of hF in relation to their values during the day before and afterthe eruption were detected in some cases. In other cases the disturbance was detected for only one parameter, or for none. Theabsence of disturbances in the hourly records could be due to the lack of coincidence between the maximum departures of theparameters from the normal situation, and the recording time of the parameter. The observed disturbances are correlated with theeruption intensity. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843205 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.2 Vol.43 |
| format | Artículo científico |
| id | redalyc_56843205 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Ionospheric effects of volcanic eruptions Argelia H.C. de Ragone Ciencias de la Tierra ionosphere Volcanic eruption F2 critical frequency F layer virtual height Ionospheric effects of volcanic eruptions Argelia H.C. de Ragone Amalia N. F. de Manzano Marta Z. de Artigas Ana G. Elias Ciencias de la Tierra ionosphere Volcanic eruption F2 critical frequency F layer virtual height Ionospheric effects of Mount Pinatubo volcanic eruption in June 1991 were recorded on 1-minute interval soundings madeby stations north of the volcano. Disturbances characterized by quasi-periodic wavelike trains were detected. They were attributedto gravity waves generated by the eruption, and its characteristics were determined. We search for similar ionospheric disturbancescaused by volcanic eruptions in North and South America, based on hourly F2 critical frequency (foF2) and F layer virtualheight (hF) data. The study was carried out for quiet magnetic activity levels. All eruptions reached the Pinatubo intensity. Adecrease of foF2 and of its amplitude of variation, and an increase of hF in relation to their values during the day before and afterthe eruption were detected in some cases. In other cases the disturbance was detected for only one parameter, or for none. Theabsence of disturbances in the hourly records could be due to the lack of coincidence between the maximum departures of theparameters from the normal situation, and the recording time of the parameter. The observed disturbances are correlated with theeruption intensity. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843205 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.2 Vol.43 |
| title | Ionospheric effects of volcanic eruptions |
| topic | Ciencias de la Tierra ionosphere Volcanic eruption F2 critical frequency F layer virtual height |
| url | https://www.redalyc.org/articulo.oa?id=56843205 |