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Poas volcano (Costa Rica) - Smithsonian / USGS Weekly Volcanic Activity Report for 13 April-19 April 2022 (New Activity / Unrest)

mer, 20 apr 2022, 19:07
19:07 PM | AUTORE: VN
OVSICORI-UNA reported that submarine fumaroles in the S part of Poás's Boca A lake and subaerial fumaroles along the E margins continued to produce low-temperature gas emissions during 13-19 April. The lake water continued to convect, and was light gray in color, since the phreatic explosion that had occurred on 6 April at “Orange Fumarola” located in a fumarolic field along the inner N crater wall. For a period of time on 17 April a gas monitoring station in Coronado measured a higher concentration of sulfur dioxide aerosols, between 8.5 and 17.6 micrograms of gas per cubic meter of ambient air, which was higher than the daily average of 6.7.
Some residents reported respiratory discomfort such as sneezing, coughing, and shortness of breath.

Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
From: Global Volcanism Program, 2022. Report on Poas. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 13 April-19 April 2022. Smithsonian Institution and US Geological Survey.

News precedente

Wed, 13 Apr 2022, 23:59

Poas volcano (Costa Rica) - Smithsonian / USGS Weekly Volcanic Activity Report for 6 April-12 April 2022 (New Activity / Unrest)

OVSICORI-UNA reported that on 6 April at 0240 a phreatic explosion from a vent called “Orange Fumarola” located in a fumarolic field along the inner N crater wall at Poás generated a plume that rose 500 m above the crater rim. Activity lasted for three minutes. The event caused a small landslide that modified the vent. ... Read all
Fri, 8 Apr 2022, 08:03

Poás volcano (Costa Rica): sudden explosive eruption yesterday morning came without warning

View of Poás volcano the morning before the eruption with visitors near the crater where it occurred later at night (image: OVSICORI-UNA)
An eruption occurred yesterday (7 April) morning at 2.42 a.m. local time from the volcano's crater northern area. The event lasted about 3 minutes and generated a steam plume that rose 500 m from the crater to approx. 3200 m altitude. ... Read all
Mostra di più
Poas vulcano
Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Stato attuale: normal or dormant (1 di 5) Eruzioni del vulcano 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
Stile eruttivo tipico
Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.
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