Ecuador Volcano Erupts Elert
Posted by thanate in Volcanic Eruptions on 28. Apr, 2011 | 0 Comments
The National Secretary of Risk management in Ecuador, María del Pilar Cornejo declared an orange alert today following the awakening of the Tungurahua volcano last night. Due to the explosions, three local towns have been evacuated. Schools have been closed in four towns due to rising health concerns as volcanic ash spews from a mountain [...]
The Volcano Under Eyjafjallajokull Glacier Eruption Again
Posted by thanate in News, Volcanic Eruptions on 06. May, 2010 | Comments Off
An Icelandic glaciologist Thursday predicted that the ongoing volcanic eruption under Iceland’s Eyjafjallajokull glacier could become more drastic, according to reports from Reykjavik. Several monitoring results show that the seismic activities in Eyjafjallajokull may indicate a more severe eruption is on the way, said a report from Iceland’s national Broadcasting RUV. Photo: usposttoday.com Sigrunn Hreinsdottir, [...]
A Dacitic Lava Dome Complex – Santiaguito Volcano Eruption
Posted by thanate in News, Volcanic Eruptions on 28. Apr, 2010 | 0 Comments
An eruption at Guatemala’s Santiaguito volcano has sent a plume of ash 27,300 feet above sea level with 4 faces of crater collapses and pyroclastic flows generated within the gullies on the southern flank. Calamity response agency spokesman David De Leon says the volcano has calmed since Monday’s big burst – though it is still [...]
Volcanic Ash
Posted by thanate in Volcanic Eruptions on 23. Apr, 2010 | 0 Comments
Volcanic ash consists of small tephra, which are bits of pulverized rock and glass created by volcanic eruptions, less than 2 millimetres in diameter. There are three mechanisms of volcanic ash formation: gas release under decompression causing magmatic eruptions; thermal contraction from chilling on contact with water causing phreatomagmatic eruptions, and ejection of entrained particles [...]
