Monday, November 07, 2011

Nyamuragira Volcano, Democratic Republic of Congo - John Seach

A flank eruption has begun at Nyamuragira volcano in the Democratic Republic of Congo. The eruption began on the evening of 6th November 2011. A 1 km long fissure has opened with lava fountains. Park rangers were the first to report the eruption last night. A sky glow was seen by observers in Goma during the night and this morning a large plume was visible.
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Hierro Volcano, Canary Islands - John Seach

Geyser-like eruptions have broken the ocean surface at El Hierro volcano in the Canary Islands. The eruptions plume contained ash, magmatic material and gas and reached a height of 20 m. Geyser-like eruptions began on 6th November and occurred strongly every 30-60 minutes. Strong smell of gas was noticed by residents near the coast. On the evening of 6th November ash and steam from the eruption site reached a height of 100 m. The volcano is possibly in a transition between submarine and Surtseyan eruption style. The bubbling at the eruption site is caused by the release of magma generated gases.
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Friday, November 04, 2011

Hierro Volcano, Canary Islands - John Seach

Earthquakes have increased at El Hierro volcano in the Canary Islands. This indicates continued submarine eruptions at the volcano. On 2nd November at 18:10 UT there was a magnitude 4.4 earthquake with a focus at depth of 23 km in El Golfo Bay. The earthquake was followed by strong harmonic tremor. On 3rd November there were new areas of yellow-green stained water above the eruption site. There are reports of a lack of marine life within a 1.5 km radius of the eruption site. On 3rd November there was bubbling water above the eruption site and areas of muddy water. On 4th November between midnight and 8:30 UT there were 15 earthquakes greater than magnitude 1.5. The volcano remains at RED alert.
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