Mount Hudson

Aerial view of the volcano Cerro Hudson 1991

The Cerro Hudson, also Volcán Hudson, is a 1,905 m high active stratovolcano in Chile. It is located 100 km north- west of Chile Chico in the Región de Aysen.

Historical eruptions

Its eruption in 1991 was with the strength 5 on the Vulkanexplosivitätsindex ( VEI ) of one of the most powerful eruptions in the last century. The largest outbreaks were before 4750 BC and 1890 Small eruptions followed in 1891 and 1971 ( VEI 3 ). .

The eruption of August, by October 1991 hurled 4.3 km ³ of volcanic Locker masses ( tephra ) into the air. Parts of the glaciers melted, resulting in a huge mudslide ( Lahar ) poured into the valleys. The residents were previously evacuated. The ash spread over large areas of Chile, Argentina to the Falkland Islands.

The Chilean cities Chile Chico and Puerto Ingeniero Ibáñez were covered with large amounts of ash.

The huge eruption remained largely unnoticed due to the almost simultaneous eruption of the Pinatubo volcano in the Philippines. Emissions of sulfur dioxide and other aerosols outreached the Pinatubo eruption.

Left

  • Cerro Hudson in the Global Volcanism Program of the Smithsonian Institution (English)
  • Chile Volcanoes (USGS )
  • Roberto A. Scasso1 and Steven Carey: Morphology and formation of glassy volcanic ash from the August 12 to 15, 1991 eruption of Hudson Volcano, Chile, Latin American journal of sedimentology and basin analysis, Vol.12 No.1 La Plata Jan. / July 2005; On-line version ISSN 1851-4979
  • Mountain in South America
  • Mountain in Chile
  • Eintausender
  • Stratovolcano
  • Mountain in the Andes
  • Volcanic eruption
  • Región de Aysen
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