Poas Volcano

Updated: 15 mai 2024 22:19 GMT - refresh

Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Condition actuelle: Activité petite ou avertissement éruption imminente (3 sur 5)

Last update: 8 mai 2024 (Smithsonian / USGS Weekly Volcanic Activity Report)

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.

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Poas webcams / données en temps réel | News/Updates | Earthquakes | Tours | Images

Style éruptif tipique: Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.
Eruptions du volcan 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, 2011, 2012, 2013, 2014, 2016, 2017

Derniers séismes proches

Heure	Mag. / Profondeur	Distance / Lieu
12 mai 08:10 (Costa Rica)	2.5 78 km		6 Km al suroeste de Vara Blanca, Costa Rica	Info
samedi, 11 mai 2024 GMT (1 séisme)
11 mai 15:41 (Costa Rica)	2.9 39 km	22 km au sud	Costa Rica: 3 km al Sureste de Tacares, Grecia.	Info
mercredi, 8 mai 2024 GMT (1 séisme)
7 mai 23:36 (Costa Rica)	2.6 89 km		Costa Rica: 6 km al Noroeste de Varablanca, Heredia.	Info
mardi, 7 mai 2024 GMT (1 séisme)
6 mai 20:35 (Costa Rica)	3.1 78 km	24 km au sud-est	Costa Rica: 4 km al Noroeste de San Isidro, Heredia.	Info
dimanche, 5 mai 2024 GMT (1 séisme)
4 mai 19:31 (Costa Rica)	2.7 13 km	13 km à l'ouest	Costa Rica: 5 km al Oeste de Toro Amarillo, Sarchi.	Info
vendredi, 3 mai 2024 GMT (1 séisme)
3 mai 15:20 (Costa Rica)	3.1 4 km	19 km à l'ouest	Costa Rica: 4 km al Norte de Tapesco, Zarcero.	Info

Voir tous

Introduction

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