Poas volcano

Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Current status: normal or dormant (1 out of 5)
Last update: 16 Mar 2021 (steaming)

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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Typical eruption style: Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.
Poas volcano eruptions: 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

TimeMag. / DepthDistance/Location
Saturday, October 16, 2021 20:05 GMT (2 earthquakes)
Oct 16, 2021 2:05 pm (GMT -6) (Oct 16, 2021 20:05 GMT)
2.9

8 km
38 km (24 mi)
Costa Rica: 2 Km Al Norte De Barbacoas, Puriscal.
Oct 16, 2021 8:53 am (GMT -6) (Oct 16, 2021 14:53 GMT)
3.5

5 km
35 km (22 mi)
3 Km Al Oeste De Picagres, Mora, Costa Rica
Thursday, October 14, 2021 10:45 GMT (2 earthquakes)
Oct 14, 2021 4:45 am (GMT -6) (Oct 14, 2021 10:45 GMT)
3.8

5 km
5.2 km (3.2 mi)
COSTA RICA
Oct 14, 2021 4:45 am (GMT -6) (Oct 14, 2021 10:45 GMT)
3.1

5 km
8.1 km (5 mi)
17 Km Al Noroeste De Vara Blanca, Costa Rica
Tuesday, October 5, 2021 18:12 GMT (1 earthquake)
Oct 5, 2021 12:12 pm (GMT -6) (Oct 5, 2021 18:12 GMT)
3.3

80 km
6.7 km (4.2 mi)
Poas, Provincia de Alajuela, 28 km northwest of San Jose, San José, Costa Rica

Background

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 Photos

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



See also: Sentinel hub | Landsat 8
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