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Zufallsfotos
Latest news from Poas volcano:
Image of Poás crater on 12 July 2017 with several vents and no more crater lake (image: RSN)
Freitag, Jul 14, 2017
As a result of the recent eruptions, the crater lake has disappeared. At the place of the old lava dome near the center of the crater, a small pyroclastic cone has formed around the main emission point. ... [mehr]
Samstag, Jul 08, 2017
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [mehr]
 

Poas Vulkan

Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Aktueller Status: Schwache Aktivität oder Ausbruchswarnung (3 von 5)
Poas Webcams / aktuelle Daten
Poas volcano books | Tours
Last update: 14 Jul 2017 (intermittent low-energy ash emissions, intense degassing)
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
UhrzeitMag. / TiefeDistanceOrt
Sun, 23 Jul
Sun, 23 Jul 05:21 UTCM 2.9 / 72 km22 km3 km al Oeste de San Antonio, Belen, Heredia.
Sat, 22 Jul
Sat, 22 Jul 08:34 UTCM 2.8 / 4 km25 km1 km al Sur de Gravilias, Desamparados.
Fri, 21 Jul
Fri, 21 Jul 01:37 UTCM 3.6 / 1 km2 km6 km al Este de Toro Amarillo, Valv. Vega.
Fri, 21 Jul 01:32 UTCM 4.8 / 4 km2 km8 km al Este de Toro Amarillo, Valv. Vega.
Fri, 21 Jul 00:17 UTCM 4.2 / 3 km1 km8 km al Este de Toro Amarillo, Valv. Vega.
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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

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