[Vulkanen] The ring of fire #4: Veel aktiviteit!

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ScienceDaily (Dec. 14, 2009) — The most detailed seismic images yet published of the plumbing that feeds the Yellowstone supervolcano shows a plume of hot and molten rock rising at an angle from the northwest at a depth of at least 410 miles, contradicting claims that there is no deep plume, only shallow hot rock moving like slowly boiling soup.

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Op vrijdag 18 december 2009 09:04 schreef Frutsel het volgende:

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Hier staat een linkje naar de video

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Nyamuragira Volcano, Democratic Republic of Congo - John Seach
Posted by John Seach
An eruption began at Nyamuragira volcano on 2nd January 2010 at 4:58 am local time. Lava flowed 500 m from a fissure on the southeast flank of the volcano towards the Virunga National Park

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Vulkaan Turrialba in Costa Rica barst uit
De vulkaan Turrialba in Costa Rica, komt tot uitbarsting. De naburige bevolking is overgegaan tot de evacuatie. Dat meldt het observatorium voor vulkanologie van Costa Rica. De 3.340 meter hoge vulkaan ligt 40 km ten oosten van San Jose en kende zijn laatste uitbarsting in 1866, maar is altijd als actief beschouwd. (belga/kh)

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Op woensdag 6 januari 2010 15:32 schreef Fredo55 het volgende:
Wat zijn er veel vulkanen actief.

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Op woensdag 6 januari 2010 15:46 schreef Frutsel het volgende:

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Goeie zaak Je had La Reunion ook nog mee kunnen pikken

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Op woensdag 6 januari 2010 15:58 schreef OA het volgende:

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O, dat was wel de bedoeling...
Straks nog even toevoegen.

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Op woensdag 6 januari 2010 13:52 schreef OA het volgende:
http://www.hln.be/hln/nl/(...)Rica-barst-uit.dhtml
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Turrialba Volcano was named after the region of Costa Rica in which the volcano is situated in Turrialba County, Cartago of Costa Rica. There is no clear consensus on the origin of the name Turrialba, but historians disagree with attempts to attribute the name to the patronym Torrealba (from Aragon in Spain) or from the Latin Turris alba (white tower). The general consensus is that Turrialba derives from a local Indian language (Huetar) but there is no agreement on its actual roots.

The stratovolcano is 3,340 m (10,958 ft) high and is about 45 minutes from the Atlantic slope town of Turrialba. The summit has three craters, one of which has fumaroles and sulfur pits. Visitors used to be able to hike down into the main crater, but increased gaseous activity has caused the time at the summit to be limited to no more than fifteen minutes. The hike to the top from where the vans usually are forced to stop takes about one to three hours depending on the ability of the hikers. Below the summit is a mountain range and cloud forest, with ferns, bromeliads, lichens and mosses. During the 19th century, it explosively erupted several times (1847?, 1853, 1855, 1861?, 1864-1865, 1866), producing pyroclastic flows. The last major eruption was in 1856, but in January 2001, the volcano reported increased activity, displaying strong fumaroles at the central craters. In January 2010, the valcano emitted ash, and two villages were evacuated.[1]
Turrialba is adjacent to Irazú and both are among Costa Rica's largest volcanoes. It had at least five large explosive eruptions in last 3500 years.

The three craters of the volcano, the oldest one is to right, the newest and most active is to the left

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TUNGURAHUA REGISTRA ACTIVIDAD "ASCENDENTE"

QUITO, 5 (ANSA)- El volcán Tungurahua, ubicado en la frontera entre la provincia homónima y la de Chimborazo, en el centro de Ecuador, registró un nivel "ascendente" de actividad con emisiones incandescentes que afectan a las poblaciones cercanas, informó hoy el Instituto Geofísico (IG).
"La actividad del volcán se mantiene aún en un nivel considerado como bajo pero con una tendencia de comportamiento ascendente", indicó el Instituto Geofísico en su reporte. La fuente agregó que "se han recibido reportes de la presencia constante de columnas de emisión de humo con moderado a nulo contenido de ceniza, expulsión de material incandescente en forma de bloques y fuentes de lava".
El IG confirmó que el lunes se registró una columna de ceniza de 2 kilómetros de altura y en la noche se registró emisión de material incandescente, con actividad constante. La caída de ceniza afecta a las poblaciones cercanas de Bilbao, Manzano, Cahuají, Chogluntus y Putzupala, que se dedican al cultivo de cebolla, maíz y papa.
El volcán Tungurahua, de 5.029 metros de altitud y ubicado a unos 135 kilómetros al sur de Quito, tuvo en noviembre de 1999 una fase de reactivación que derivó en la evacuación de las poblaciones vecinas. JMG

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Op woensdag 6 januari 2010 15:35 schreef OA het volgende:

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Dat vind ik ook, vandaar dat ik er maar wat aandacht aan heb geschonken.
'Vulkanen zijn wereldwijd onrustig'

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In the waning days of 2009 and the first days of 2010, the lava dome on the summit of Soufrière Hills Volcano continued to grow rapidly. As the dome rises, rocks and debris can break off, cascading down the river valleys and gullies that radiate from the summit. These pyroclastic flows are among the major hazards created by Soufrière Hills.

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Thursday, January 07, 2010
Nyamuragira Volcano, Democratic Republic of Congo - John Seach
Posted by John Seach
The eruption continues at Nyamuragira volcano in the Democratic Republic of Congo. After 4 days lava has traveled 21 kilometers, and is only 7 kilometers from the Goma-Sake road. Four craters were active at the beginning of the eruption. The lava flows are still within the boundaries of Virunga National Park. Volcanologists from Goma said lava could reach the Goma-Sake road within 2 to 3 days. Chimpanzees of Tongo have not been harmed.