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Volcanic activity worldwide 1 Nov 2014: Turrialba volcano

samedi nov. 01, 2014 22:00 |

Costa Rica’s Turrialba Volcano erupts, as seen from 14,000 feet at 8:29 a.m. on Oct. 30, 2014. (OVSICORI-UNA, via The Tico Times)
Costa Rica’s Turrialba Volcano erupts, as seen from 14,000 feet at 8:29 a.m. on Oct. 30, 2014. (OVSICORI-UNA, via The Tico Times)
Turrialba (Costa Rica): According to the National Seismological Network (RSN), the sudden eruption of Turrialba last Wednesday night was the volcano’s largest in 150 years. Costa Rica-based online-newspaper ‘The Tico Times’ reports that it was a massive phreatic explosion that spewed out ash, rocks and possibly magma. Experts from the University of Costa Rica (UCR) and National University (UNA) reported increased seismic activity on Wednesday afternoon, culminating in explosive activity at 11:10 p.m. with the ash cloud from the explosion reaching several hundred meters.
The eruption was followed by strong rumblings and ash covering roofs, gardens, roads and cars across different parts of central Costa Rica. The volcano is located merely 60 km northeast of the Costa Rican capital of San Jose but the area close to the volcano has been largely deserted since the renewal of volcanic activity in 2010. Upon the eruption, National Emergency Commission (CNE) officials along with UNA and UCR vulcanologists went to the area to conduct on-the-ground evaluations of the volcano’s activity. They reported that spewing of gas, vapour and ash is concentrated in two of the volcano’s craters and that activity remained constant on Thursday morning.
... [read more]
Actualités précédentes
vendredi, oct. 31, 2014
Shishaldin (United States, Aleutian Islands): Eruptive activity at the volcano continues. Most of the time, it seems to be weak, probably strombolian in nature, but there have been episodes with more intense activity, possibly lava fountaining, evidenced by strong tremor and elevated surface temperatures. ... [details]
Thermal image of the upper Sciara del Fuoco of Stromboli
jeudi, oct. 30, 2014
Stromboli (Eolian Islands, Italy): (30 Oct) The effusive eruption that had started on 7 August seems to be ending: the lava flow emitted from the 650 m vent at the eastern base of the summit crater complex has decreased a lot two days ago and seems to have almost (or completely) stopped by today. ... [details]
County of Hawaii media image of lava flow through Pahoa village on Oct 28, 2014.
mercredi, oct. 29, 2014
Kilauea (Hawai'i): According to the latest report, the lava flow front is now 280 m/yds from Pahoa Village Road, averaging about 10 m/yds per hour. Lava has already consumed a few small agricultural structures, and there are perhaps 10-15 residences in its direct path on both sides of the road. Residents have been placed on an "evacuation notice" without being forced to leave, so that they can see what happens to their property and hopefully bring some emotional closure to the ordeal. ... [details]
The advancing lava front in Pahoa last evening (image: HVO)
mardi, oct. 28, 2014
Dukono (Halmahera): Explosive activity at the volcano continues. An ash plume at estimated 10,000 ft (3 km) altitude was seen drifting 45 nautical miles to the east on satellite data today (VAAC Darwin). ... [details]
Lava flows on Stromboli last evening (photo: Ferruccio Ferrari)
lundi, oct. 27, 2014
Stromboli (Eolian Islands, Italy): No major changes have occurred at the volcano: Lava effusion continues from the 650 m vent and feeds active lava flows on the upper Sciara del Fuoco. From the lava flow fronts, incandescent blocks detach and roll down the slope. ... [details]

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