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Latest news from Poas volcano:
Poas volcano (Costa Rica), activity update: high-temperature fumarolic activity on the composite pyroclastic cone (dome).
Hochtemperatur-fumaraoles aus dem comosite Kegel (die "Kuppel") am Ufer des Pos 'Kratersee (Foto: E. Fernndez, 24 Feb 2012)
Montag, Mär 05, 2012
Im Februar bestand Poás Aktivität in starke Hochtemperatur-fumarolic Aktivität und sporadisch kleine Phreatische Explosionen, berichtet von Park Range... [mehr]
Poas volcano (Costa Rica) activity update: geyser activity from the 2011 lava dome
Mittwoch, Jan 04, 2012
Fieldwork at Poás on 16 December showed new geyser activity from a vent on the N flank of the lava dome that formed in 2011. A water-and-mud fountain ... [mehr]

Poas Vulkan

Schichtvulkan 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Aktueller Status: unruhig (2 von 5)
Poas webcams / live data
Letztes Update: 5 Mär 2012 (high-temperature fumarolic activity in the composite pyroclastic cone (dome).)
Typische Aktivität:

Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.


Ausbrüche des Poas: 1828, 1834, 1838(?), 1860, 1879(?), 1880, 1888-91, 1895, 1898-1907, 1910, 1910, 1914, 1914-15, 1925, 1929, 1941-46, 1948-51, 1952-57, 1958-61, 1963, 1964-65, 1967, 1969, 1970, 1972-73, 1974-75, 1976, 1977, 1977-78, 1978, 1979-80, 1980, 1981, 1987-90, 1991, 1992, 1992-93, 1994, 1996, 2010
Poas Vulkan Fotos
Poás is one of Costa Rica´s most active volcanoes, and one of its most frequently visited and prominent ones. It contains a green acid crater lake and during some of its frequent phreatic eruptions, water from the lake is ejected like a geyser.

Beschreibung:

The broad, well-vegetated edifice of Poás has three craters in a N-S line. The 2708-m-high basaltic-to-dacitic complex stratovolcano is cut by a N-S-trending fissure that extends to the lower northern flank, where a parasite volcano (the Congo stratovolcano) and several explosion craters, or maars, most of them lake-filled, have been created.
Poás has two summit crater lakes. The southermost one, Botos, is cold, clear has not eruptied for about 7500 years. The other crater lake is geothermally heated and -after Kawah Ijen in Indonesia - is probably the world's second most acidic natural lake. Its pH is near zero.
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Source: GVP, Smithsonian Institution

Poas Fotos:

Vulkan Poás in Costa Rica (Photo: Astrid_Furrer)
Vulkan Poás in Costa Rica (Photo: Astrid_Furrer)