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Turrialba vulkaan
Stratovulkaan 3340 m (10,958 ft)
Costa Rica, 10.03°N / -83.77°W
Current status: restless (2 out of 5)
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Turrialba vulkaanuitbarstingen:
1723(?), 1847(?), 1853, 1855, 1861(?), 1864-65, 1866, 2010 (Jan 4) - ongoing
Typical eruption style:
Ontploffingsgevaar.
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Turrialba volcano (Costa Rica): activity updates and eruption news

Turrialba volcano (Costa Rica): new eruption on 4 January 2010

Friday Jan 08, 2010 17:16 PM |

Turrialba volcano started erupting ash from one of tis summit craters on the morning of 4 January.
A deposit of about 2 mm of black ash containing mostly lithic fragments was observed by members of the VolcanoDíscovery team on location on the eastern flank at ca. 3 km distance from the crater on 5 Jan. Analyses of the deposit by Costa Rican geologist showed later that there is no juvenile material ejected, concluding that the eruption is phreatic in origin.
According to geologists from the Costa Rica volcanological survey, two new vents have opened inside the western crater and were venting ash. Eruptive tremor was near continuous on 5 January.
Due to bad weather conditions, detailed observations of the activity were not possible by our team. Access to the roads leading up to the volcano were closed for the public and a small number of inhabitants living on the spcarsely populated eastern and northeastern flanks of the volcano were evacuated.
On 6 January, occasional clear views of the crater area revealed only steaming and moderate SO2 emission.
Vorig nieuws
Saturday, Dec 15, 2007
The volcanic unrest at Turrialba seems to intensify, and signs of a possible new eruption in the near to medium future are getting stronger: According to OVSICORI-UNA a gas-and-steam plume from Turrialba rose to an altitude greater than 5.3 km (17,400 ft) a.s.l. on 5 December. Fieldwork confirmed an unusual output of gas from several fumaroles along the S outer wall. Areas burned by acute acidification have extended in the last month. Pastures turned yellowish near the upper areas, and native and exotic tree species were impacted as well as birch tree patches along most drainages. Within the W crater, temperatures of fumaroles reached 280 degrees Celsius and native sulfur was present. ... [meer...]
Thursday, Sep 13, 2007

Unrest at Turrialba volcano continues. Increased fumarolic activity had started in August 2006 and is concentrated mainly  to the W of Turrialba's central crater.

... [meer...]
Friday, Aug 10, 2007
Volcanic unrest at Turrialba volcano continues. Signs of an ongoing slow intrusion of magma at shallow depths indicating a possible eruption in the near-medium term future increase. ... [meer...]

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