latest (Apr 2013) ... | Dec 2011 | Nov 2011 | | Sep-Oct 2011 | Jul-Aug 2011 | May-Jun 2011 | archive
Monday, Oct 31, 2011
Lokon volcano near Manado town in North Sulawesi, Indonesia, continues to erupt sporadically. Our Indonesian team member Andi Rosadi climbed the volcano on 24 Oct and saw 2 eruptions on 26 Oct. Lokon is located near the popular Tomohon resort town in the Minahasa Highlands.
Saturday, Oct 29, 2011
While the submarine eruption south of El Hierro Island continues, a large number of mostly deep (around 20km) earthquakes of up to 3.3 magnitude have been occurring in the gulf off the NW coast of this island. ...more [read all]
El Hierro volcano (Canary Islands, Spain): eruption update - new submarine crater and lava flows mapped
A true color, high-resolution RapidEye satellite image taken on 26 Oct featuring the gigantic stain visible on the surface of Las Calmas Sea, and even the vent area visible as the brown spot near the southern tip of the island. Image courtesy and copyright RapidEye.net
The Spanish research vessel Ramon Margalef has surveyed the vent area of the new ongoing submarine eruption south of El Hierro with the help of a diving robot, and presented a digital model for the news crater, which formed above an undersea valley at 250 m depth and forms a cone rising now more than 100 m containing a 120 m wide crater. Even submarine (pillow) lava flows are recognized on the elevation model presented. If the pictures presented by IEO really are showing the new volcano, it is the first time that the birth of a seamount has been documented this way. ...more
Digial elevation models presented by IEO showing the vent area before (a) the eruption and at present (b), with the new crater and even what is likely submarine lava flows. Images: Instituto Español de Oceanografía (IEO)
Friday, Oct 28, 2011
An eruption has started at Cerro Hudson volcano in Chile. The activity comes from a new eruptive fissure located south of the summit with 3 vents that emit clouds of steam and some ash, rising to 5.5 km elevation. ...more [read all]
Hudon volcano's new eruptive fissure (photo taken on October 26, courtesy and copyright Sernageomin.cl)
Signs of unrest beneath Katla, one of Iceland's most active volcanoes continue. A seismic swarm was recorded under the northern part of Katla volcano's caldera beneath the Mýrdalsjökull glacier in southern Iceland over the past 48 hours. 35 quakes of up to 3.2 magnitude, many at shallow depths, occrred mostly in the afternoon of 27 Oct.
Thursday, Oct 27, 2011
Another volcano in Southern Chile, Mt Hudson in the Aysén region, could be close to a new eruption. Starting on Tuesday, over 100 earthquakes have been detected under the volcano by the National Institute of Geology (SERNAGEOMIN), who raised the alert level to Red ("eruption could be imminent"). ...more [read all]
Tuesday, Oct 25, 2011
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Sunday, Oct 23, 2011
Another paroxysmal eruption (the 17th in 2011) is in progress at Etna's New SE crater at the time of writing. The volcanic tremor recorded by INGV has risen sharply to 50 times above background levels, and strong strombolian activity and/or lava fountains, as well as a lava flow into the Valle del Bove are visible from various webcams. ...more
Saturday, Oct 15, 2011
The ongoing submarine eruption south of El Hierro, the first eruption in the Canaries in 40 years, continues from probably 2 vents at depths below 250 m under the water surface. It seems that the eruption is the submarine equivalent of a typical fissure eruption as often observed on basaltic shield volcanoes. ...more [read all]
Our reporter Doni / VolcanoDiscovery Indonesia spoke with the Krakatau volcano observatory of Anak Krakatau in Pasauran near Anyer, West-Java, and was told that after a brief violent eruption "the volcano has been back to normal again or quieted" now. We will follow the situation closely and report more news as soon as we have it.
Tuesday, Oct 11, 2011
The volcanological observatory of the Canaries ahs raised the volcanic alert level to the maximum "Red" for the southernmost city on the island, La Restinga, and the government of the Canaries has announced to evacuate the population of La Restinga as a measure of precaution. ...more
Øystein Lund Andersen sent a report about his recent visit to the Krakatau obsvervation post on West-Java last weekend: ...more [read all]
Monday, Oct 10, 2011
Sunday, Oct 09, 2011
Following 10 days of quiet, a new paroxysmal eruption (nr 16 in 2011) took place from the New SE crater of Etna volcano during the afternoon of 8 October 2011. ...more [read all]
The lava fountains from the lower part of the SE fissure at the beginning of the 16th paroxysm of Etna's New SE crater, ca. 15h30, 8 Oct 2011
Tuesday, Oct 04, 2011
A new eruption occurred at Anak Krakatau yesterday (3 Oct). A large (2-3 km high) ash cloud was seen rising from the volcano observatory on Java's west coast and is seen in a news TV video. ...more [read all]
Sunday, Oct 02, 2011
Krakatau volcano (Sunda Strait, Indonesia): increased seismicity, alert level raised to 3 (out of 4)
Increased seismic activity recorded at Anak Krakatau has been detected in recent days, suggesting a new eruptive phase might be under way. The Indonesian Volcanological Survey has raised the alert level to 3 (out of 4).
Wednesday, Sep 28, 2011
The 15th paroxysm of Etna's New SE crater occurred in the evening of 28 Sep, a few days earlier than what statistically had been expected (based on thze steady increasing intervals between the past similar events). ...more [read all]
lava flows from the 15th paroxysm of the New SE crater of Etna volcano (webcam image from http://www.radiostudio7.it/webcam.asp)
Concern is growing that the El Hierro volcano (Canary Islands) could be heading towards an eruption, after seismic activity beneath the island increased strongly over the past days. More than 150 earthquakes were recorded on Tuesday alone. At least 20 earthquakes were larger than 3 mag Richter and could be felt by locals during the past 24 hours. ...more [read all]
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Saturday, Sep 24, 2011
Recently, a part of the lava dome inside the crater of Poas volcano has been showing areas of incandescence and flames of burning gas. ...more
Wednesday, Sep 21, 2011
Monday, Sep 19, 2011
Sunday, Sep 18, 2011
2-3 few days ago, the activity of Stromboli decreased significantly from its record intensity observed during the first half of September, and is now back at normal levels. ...more [read all]
Thursday, Sep 15, 2011
Wednesday, Sep 14, 2011
Activity of Karymsky volcano on September 14, 2011. Photo by D. Melnikov.
Monday, Sep 12, 2011
The Nevado del Ruiz volcano (infamous for the tragic accident of the Armero mud flow disaster on 13 Nov 1985, killing more than 20,000 people) is becoming restless, as Erik Klemetti points out on his Eruptions Blog. Seismic activity beneath the volcano has increased dramatically during the past months, and it is likely that this is related to new magma rising within the volcano.
During most of August and up to today, Stromboli's activity has been at some of its highest levels observed in recent decades. Protagonist has been the NE crater, which has been continuing to produce powerful lava bubbles. Ejections of incandescent lava bombs often reached more than 500 m height, and hit both the Pizzo and Bastimento areas, the most popular viewing points (which for this reason remained closed for excursions most of the time). ...more [read all]
Powerful explosion from the NE crater sending bombs many 100 m high and showering the flanks with glowing bombs (9 Sep 2011).
Thursday, Sep 08, 2011
The 13th paroxysm from Etna's New SE crater occurred this morning between ca. 8 and 10am, following a steep increase in tremor and a short period of rapidply increasing strombolian activity from several vents inside the new crater. The eruption intensified into lava fountains generating a tall ash plume drifting SSE and showering a narrow sector south of Etna with ash. ...more
Tuesday, Sep 06, 2011
Our colleague Chris Weber who is currently touring on Java reported observing small lava fountains from a vent inside the summit crater of Anak Krakatau volcano. The fountains reached a height of ca. 10 meters.
A mew seismic swarm is occurring at Katla volcano, with over 60 small earthquakes of magnitudes of up to 2.6 at 1-8 km depth beneath the caldera since Sunday. It could be a possibility that this swarm is caused by the injection of magma at depth, but could also be due to structural displacements. It is unclear whether the recent signs of unrest at Katla are the precursors of a new eruption in a near to medium future.
Saturday, Sep 03, 2011
Increased seismic activity and weak steaming from the southern peak of Leweotobi volcano (Gunung Lewotobi Perempuan, "Woman of Lewotobi") with a height of 1703 m has triggered a raise of the alert level from 1 (normal) to 2 (alert). Residents and tourists in the area are advised not to approach the volcano. ...more
The Indonesian Volcanological Survey (PVMBG) has raised the alert status for Anak Ranakah volcano in the district of Manggarai on the island of Flores in southeastern Indonesia to 2 out of 4 (meaning eruption warning) on 26 August. ...more [read all]
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