Artículo
Abstract:
The August 1991 eruption of the Hudson volcano in the southern Andean volcanic zone affected an area of 1000 km in radius to the east in the Argentine Patagonic meseta. The thickness of ash ranged from 20 cm in the Andean area to less than 1 mm in the Atlantic coast zone. Wind storms reactivated the ash deposits, together with terrigenous material, more than one year after the eruption. In order to assess the potential risk of the ash, analyses of concentration, size, mineralogical composition, toxic elements, and irritating effects of gases were performed. In all samples, the percentage of particles of the 2-to 5-μm range is below the toxic threshold level. Trace elements are below the toxic threshold concentration for humans and animals. The major impact of the ashfall was on sheep herds; about one third of them were lost in the areas close to the volcano. Soil incorporated the ash layers, and a fast recovery of orchards was reported two years later. Rivers were loaded with sediment in the immediate aftermath, but one year later returned to previous conditions. Along the shores of the Buenos Aires Lake, a fresh tephra layer can be distinguished. © 1995 Springer-Verlag.
Registro:
| Documento: | Artículo |
| Título: | Environmental assessment of 1991 Hudson volcano eruption ashfall effects on southern Patagonia region, Argentina |
| Autor: | Inbar, M.; Ostera, H.A.; Parica, C.A.; Remesal, M.B.; Salani, F.M. |
| Filiación: | University of Haifa, Haifa, Israel Institute de Geoicronologia y Geologia Isotopica, Ciudad Universitaria, Buenos Aires, Argentina Instituto Antartico Argentino, Buenos Aires, Argentina Universidad de Buenos Aires, Buenos Aires, Argentina |
| Palabras clave: | Argentina; Ashfall effects; Volcano eruption; ashfall; volcanic eruption; Argentina, Patagonia, Hudson Volcano |
| Año: | 1995 |
| Volumen: | 25 |
| Número: | 2 |
| Página de inicio: | 119 |
| Página de fin: | 125 |
| DOI: | http://dx.doi.org/10.1007/BF00767868 |
| Título revista: | Environmental Geology |
| Título revista abreviado: | Geo |
| ISSN: | 09430105 |
| CODEN: | ENGOE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09430105_v25_n2_p119_Inbar |
Referencias:
- Arias, N., Arizmendi, A., Bitschene, P., Fernandez, M., Giacosa, R., Grizinik, M., Marquez, M., Nillni, A., (1991) La eruptión del volcan Hudson y sus efectos inmediatos en la Patagonia argentina, pcia, pp. 9-18. , Primera Reunión de Mineralogía y Metalogenia, De Santa Cruz
- Banks, N., Moreno, H., Iven, M., (1991) Informe Volcanológico No. 1, , Servicio National de Geología y Minería, Chile, Volcan Hudson
- Becklake, Irritantes químicos y fisicos (1977) Med Interna Cecil-Loeb, 1, p. 1011
- Corbella, H., Scasso, R., Perez, D., Lucero, M., Palacios, M.E., Tiberi, P.E., Rial, P., Ruiz, R., Volcán Hudson. Informe especial sobre los efectos agroecológicos de la eruptión en la provincia de Santa Cruz (1991) An Soc Rural Argent, 10-12, pp. 26-33
- Frers, E.R.M., Efectos de la erupción del Volcan Hudson en la Patagonia Austral (1991) An Soc Rural Argent, 10-12, pp. 34-37
- La Nación (1992) Tras el drama de la ceniza, la larga espera de ayuda. 25 August, Buenos Aires; La Nación (1993) Cara y cruz de las secuelas por la erupción del Hudson. 21 October, Buenos Aires; Le Bas, M.J., Le, Wolley, A.R., The construction of the total alkali-silica chemical classification of volcanic rocks (1992) Mineral Petrol, 46, pp. 1-22
- Ostera HA, Parica CA, Remesal MB, and Salani FM (1993) La ceniza del Volcan Hudson, factores de riesgo en areas de la provincia de 125; Santa Cruz. Actas, Primeras Jornadas Nacionales de Vulcanolo-Gía, Mendoza 1992:97-106; Peterson, D.W., Volcanic hazards and public response (1988) J Geophys Res, 93 (5 B), pp. 4161-4170
- Rees, J.D., Effects of the eruption of Paricutin volcano on landforms, vegetation and human occupancy (1979) Volcanic activity and human ecology, pp. 249-292. , P.D., Sheets, D.K., Grayson, Academic Press, New York
- Wright TL and Pierson TC (1992) Living with volcanoes. U.S. Geological Survey Circular 1073, 57 pp; Yang SJ, Qin FQ, Mihg YZ, Shao HQ, Xi MS, and Yu YL (1981) Some properties of the aerosols during the passage of a dust storm over Beijing, China, April 17–20, 1980. In: Pewe TL (ed), Desert dust: Origin, characteristics and effect on man. Geol Soc Am Special Paper 186, pp 159–167
Citas:
---------- APA ----------
Inbar, M., Ostera, H.A., Parica, C.A., Remesal, M.B. & Salani, F.M. (1995) . Environmental assessment of 1991 Hudson volcano eruption ashfall effects on southern Patagonia region, Argentina. Environmental Geology, 25(2), 119-125.http://dx.doi.org/10.1007/BF00767868
---------- CHICAGO ----------
Inbar, M., Ostera, H.A., Parica, C.A., Remesal, M.B., Salani, F.M. "Environmental assessment of 1991 Hudson volcano eruption ashfall effects on southern Patagonia region, Argentina" . Environmental Geology 25, no. 2 (1995) : 119-125.http://dx.doi.org/10.1007/BF00767868
---------- MLA ----------
Inbar, M., Ostera, H.A., Parica, C.A., Remesal, M.B., Salani, F.M. "Environmental assessment of 1991 Hudson volcano eruption ashfall effects on southern Patagonia region, Argentina" . Environmental Geology, vol. 25, no. 2, 1995, pp. 119-125.http://dx.doi.org/10.1007/BF00767868
---------- VANCOUVER ----------
Inbar, M., Ostera, H.A., Parica, C.A., Remesal, M.B., Salani, F.M. Environmental assessment of 1991 Hudson volcano eruption ashfall effects on southern Patagonia region, Argentina. Geo. 1995;25(2):119-125.http://dx.doi.org/10.1007/BF00767868
