Sunday, December 04, 2011

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Kilauea Volcano, Hawaii - John Seach

A lava flow is advancing towards the old Royal Gardens subdivision at Kilauea volcano in Hawaii. The flow is moving alongside a kipuka and has started forest fires. The lava is moving west of the February 2010 flow and is close to the last inhabited house in the subdivision.
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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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Thursday, October 20, 2011

Mauna Kea Volcano, Hawaii - John Seach

An earthquake swarm occurred under Mauna Kea volcano in Hawaii on 19th October 2011. The largest earthquake was magnitude 4.5 and had a focus at a depth of 18 km at a location 9 km NE of the summit.
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Thursday, September 29, 2011

Hierro Volcano, Canary Islands - John Seach

Earthquakes continue at Hierro volcano in the Canary Islands. Since July 2011 over 8000 small earthquakes have been recorded at the volcano. Yesterday an earthquake of magnitude 3.5 occurred. Deformation has increased significantly at the volcano in the past week. On 23rd September 2011 the alert level was raised to YELLOW. Some residents have been evacuated from near the volcano. Earthquakes are occurring in the northwest of the island at the location of a landslide that created a 100 metre high tsunami about 50,000 years ago. A major debris avalanche occurred on the northern flank of Hierro Island, dated about 13,000 years ago. It had a width of 15 km and a scarp height of 1000 m. The landslide deposited 150-180 cubic km of debris on the seafloor down to a depth of 3000 m.
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