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Gorely volcanStratovolcano (caldera) 1829 m (6,001 ft)Kamtchatka, world, 52.55°N / 158.03°E Eruptions du volcan Gorely: 1821 (?), 1828, 1832, 1855, 1869, 1929-30, 1930-31, 1931, 1932 (?), 1947, 1961, June 1980 - July 81, Aug 1984- Sep 86, June 2010 (?) Style éruptif tipique: Explosive, often water-magma interaction. Formation of crater lakes and lahars (mud flows). Gorely volcano: eruption news and updatesvendredi, mai 25, 2012
A series of photos from our latest tour to the colorful volcanic island of Milos, Greece [lire toutes]
jeudi, mai 24, 2012
We have a few places left on the following exciting tours: ...plus [lire toutes]
The past week was dominated by the paroxysm at Fuego volcano on 20 May and ongoing strong explosive activity at Shiveluch in Kamchatka. The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows: ...plus [lire toutes]
On 16 May a steam-and-gas plume drifted W and lahars descended the W flank. On 18 May ashfall was reported in Manzano (8 km SW), Choglontus (SW), Chontapamba (W), Yuibug, Puela (8 km SW), and high in the Mapayacu drainage (SW). ...plus [lire toutes]
Strong explosive activity continued during the past week. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the active crater, and was accompanied by fumarolic activity and lava-dome incandescence. ...plus [lire toutes]
INSIVUMEH reported that on 21 May a lahar traveled down Santa María's Rio Nima II drainage, carrying tree branches and 40-cm-wide lava blocks. ...plus [lire toutes]
Sakurajima volcano on Kyushu, Japan, remains in a state of elevated activity. During the past week, strong vulcanian explosions from the Showa Crater often occurred multiple times per day, and generated tall ash plumes reaching 4 km altitude. A small pyroclastic flow reaching 300 m length occurred during an explosion on 21 May. ...plus [lire toutes]
Gas-and-ash plumes were observed daily rising as high as 1.5 km above crater. Plumes drifted NW, NE, SE, and SW. ...plus [lire toutes]
Moderate seismic activity from Karymsky continued to be detected during 11-18 May. Possible ash plumes rose to an altitude of 1.8 km (6,000 ft) a.s.l. on 10 and 14 May. ...plus [lire toutes]
Darwin VAAC reported that on 18 May an ash plume from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 55 km E. [lire toutes]
Darwin VAAC reported that during 18 and 20-21 May ash plumes from Batu Tara rose to altitudes of 2.4-3 km (8,000-10,000 ft) a.s.l. and drifted 27-55 km N and NW. [lire toutes]
A small ash eruption was reported from Marapi volcano in West Sumatra near the cities of Bukittinggi, Padang Panjang and Batusangkar at 07:15 local time on 18 May. The eruption lasted about 10 minutes, and produced an ash plume that rose 600 m. [lire toutes]
The paroxysmal eruption of Fuego volcano, Guatemala, on 19-20 May is summarized in the following Smithsonian / USGS Weekly Volcanic Activity Report: ...plus [lire toutes]
mercredi, mai 23, 2012
Almost no earthquakes have occurred since the last update, and intervals between the occasional weak quakes are becoming longer. In addition, degassing activity from the submarine vents has decreased and there are no more visible stain or jacuzzi reported from near La Restinga. We therefore decided to put El Hierro back to "green" [lire toutes]
 Time series showing ground deformation between March 2011 and February 2012 for selected locations on Nea Kameni Volcano. (Credits: Harokopio University of Athens)  The growing lava dome inside Anak Krakatau's summit crater on 7 May 2012 (photo: Cornel Popescu)
dimanche, mai 20, 2012
 Lava flows and ejected lava bombs from the summit crater of Fuego on 19 May. (Image courtesy of CONRED, republished on Eruptions Blog) vendredi, mai 18, 2012
Lava continues to flow on Kīlauea's coast, while its summit and rift zone continue to glow. Generally higher pressure over the past week, with fluctuations, has pushed new lava flows closer to the ocean than any time previously this year, but most are spreading out parallel to the coastline rather than directly to the ocean. Meanwhile, over the past week a new eastern flow branch developed above the pali and is now advancing down its steepest part, looking within reach of the coastal plain today. This eastern branch appears quite vigorous, and must be diverting a fair amount of lava from the flows near the coast. Stay tuned to find out if lava will reach the ocean for the first time in 2012 or if the volcano grows a new system of lava tubes or both! [lire toutes]
 NASA image of Bagana from 16 May 2012 showing an active steaming lava flow
jeudi, mai 17, 2012
The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows: ...plus [lire toutes]
Darwin VAAC reported that on 14 May an ash plume from Karangetang rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted 130 km SE. ...plus [lire toutes]
Observers in the villages of Mde and Mkazi, on the W flank of Karthala, reported increased incandescence from the summit during the night of 9-10 May. [lire toutes]
CENAPRED reported that during 8-10 May multiple gas-and-ash plumes rose 1.5 km above Popocatépetl's crater and drifted NE. Incandescent fragments ejected from the crater landed on the N and E flanks as far as 500 m away. ...plus [lire toutes]
The Sirung stratovolcano on the remote Pantar island in Indonesia has come back to life with a series of probably phreatic explosions and strong degassing. ...plus [lire toutes]
Moderate seismic activity from Karymsky continued to be detected during 4-11 May, and indicated that possible ash plumes rose to an altitude of 2 km (6,600 ft) a.s.l. during 7-8 May. [lire toutes]
During 11-15 May explosive eruptions from Sakura-jima's Showa Crater occurred 9 times and ejected tephra as far as 1.3 km from the crater. ...plus [lire toutes]
During 13-14 May incandescent explosions from Santa María's Caliente dome produced ash plumes that rose 700 m above the crater and drifted WSW. Avalanches from the dome and lava-flow fronts descended the flanks. [lire toutes]
Strong explosive activity at Shiveluch continued during 4-11 May. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the active crater and was accompanied by fumarolic activity. ...plus [lire toutes]
During 4-11 May activity at the Soufrière Hills lava dome was at a low level. ...plus [lire toutes]
IG reported that during 9-15 May visual observations of Tungurahua were often limited due to cloud cover. ...plus [lire toutes]
mercredi, mai 16, 2012
 Earthquake swarm near the Askja caldera on 14-15 May 2012 (Icelandic Met Office)
 Earthquake swarm at Katla volcano on 15 May 2012 (Icelandic Met Office)
mardi, mai 15, 2012
During 1-30 April white plumes from Ijen rose 100-200 m above the crater; during 1-11 May diffuse white plumes rose 50-100 m. ...plus [lire toutes]
lundi, mai 14, 2012
A slight increase of seismic activity has been noted recently. On 12 May, 5 small quakes occurred in the western part of the island at depths of 2-17 km. It is unlikely that this is a precursor of a new eruptive phase, but rather reflects residual magma movements and minor tectonic adjustments at the recently emplaces dikes beneath the island. [lire toutes]
jeudi, mai 10, 2012
mercredi, mai 09, 2012
The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows: ...plus [lire toutes]
Darwin VAAC reported that during 8-9 May ash plumes from Dukono rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 75 km SE. [lire toutes]
Kīlauea's lava flows have surged in activity on the coastal plain accompanying inflation at the summit, though following by about 24 hours. This activity is farther from the ocean than before, relatively close to the base of the pali but moving quickly across cooling flows from the previous two months. Check out our new time-lapse movie showing the height of activity! [lire toutes]
mardi, mai 08, 2012
Darwin VAAC reported that during 2-4 May ash plumes from Batu Tara rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 37 km NW. [lire toutes]
Based on analyses of satellite images, AVO reported on 4 May that the small lava dome recently emplaced in Cleveland's summit crater had been destroyed late in the previous week, but the explosion was too small to be detected by distant infrasound and seismic networks. A small new dome was extruded following the explosion and was the fifth dome to be observed in this eruptive episode which began in July 2011. During 4-5 May two small explosions were detected. ...plus [lire toutes]
Darwin VAAC reported that ash-and-steam plumes from Pago rose to an altitude of 13.7 km (45,000 ft) a.s.l. and drifted 75 km NE. [lire toutes]
CENAPRED reported that during 2-3 May activity at Popocatépetl increased significantly. ...plus [lire toutes]
CVGHM reported that during 1-29 February multiple pyroclastic flows from Semeru traveled 500 and 2,500 m into the Besuk Kembar and Besuk Kobokan rivers (on the S flank), respectively. During 1 February-30 April dense gray-to-white plumes rose 100-500 m above Jongring Seloko crater and drifted W and N. Incandescence was visible up to 50 m above the crater during 1 February-31 March. Seismicity decreased from March to April. Observations indicated that the lava dome grew in April. On 2 May CVGHM lowered the Alert Level to 2 (on a scale of 1-4) and reminded the public not to approach the crater within a 4-km radius. ...plus [lire toutes]
KVERT reported that moderate seismic activity from Karymsky continued to be detected during 27 April-4 May, and indicated that possible ash plumes rose to an altitude of 2.3 km (7,600 ft) a.s.l. during 26-27 April and 2 May. ...plus [lire toutes]
According to INGEOMINAS, the Observatorio Vulcanológico and Sismológico de Manizales reported that during 1-2 May both satellite images and field observers indicated that steam and sulfur dioxide emissions rose from Nevado del Ruiz. Seismicity continued to decrease. On 3 May the Alert Level was lowered to III (Yellow; "changes in the behavior of volcanic activity"). ...plus [lire toutes]
JMA reported that during 1-7 May explosive eruptions from Sakura-jima's Showa Crater occurred 17 times and ejected tephra as far as 1.3 km from the crater. ...plus [lire toutes]
KVERT reported that explosive activity at Shiveluch continued during 27 April-4 May. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption and was accompanied by fumarolic activity. ...plus [lire toutes]
MVO reported that the cloud cover which often obscures views of the Soufrière Hills lava dome cleared for a short period on 5 May, revealing multiple areas of incandescence, the same ones first observed on 11 November 2011. Some of the areas were visible to the naked eye while more were visible in a long-exposure photograph. ...plus [lire toutes]
Explosions were heard in Baños on 2 May and ashfall was reported in Pillate (7 km W) the next day. ...plus [lire toutes]
lundi, mai 07, 2012
Popocatépetl continues to produce ash and steam plumes and occasional explosions, as new magma rises to the summit crater to build up a new lava dome. At night, the dome is glowing brightly. ...plus [lire toutes]
dimanche, mai 06, 2012
 Webcam image of the eruption on 5 May (KVERT)
samedi, mai 05, 2012
Since entering the National Park, lava flows have continued to slowly advance towards the ocean but have not made much ground. Pressure variations propagating through Kīlauea volcano have kept the flows from building momentum, but they have persisted sluggishly and lava flows are still visible by means of a 6-7mi / 9-11km round-trip hike from the Kalapana side. When the lava is flowing more slowly (like right now), it actually gives us a chance to approach and interact with it more easily, whereas more vigorous flows require additional safety considerations. For non-hikers, strong glow continues from the summit, visible from Jaggar Overlook & Museum! [lire toutes]
Since about 2 hours ago, tremor from Etna has started to rise steeply, suggesting that the next (26th) paroxysm of the New SE crater is probably imminent. At the moment, visible observations are difficult due to cloud cover, but it could be expected that there is some strombolian activity right now from the crater. ...plus [lire toutes]
vendredi, mai 04, 2012
jeudi, mai 03, 2012
Nicaragua's Masaya volcano, located about 20 km south of Managua city, has entered a new eruptive phase. The latest report of the Instituto Nicaragüense de Estudios Territoriales (INETER) mentions 24 small ash and steam explosions that were recorded between 30 April and 1 May. 9 of these explosions produced ash clouds that rose about 500 m above the Santiago crater rim. ...plus [lire toutes]
 Plume of Mt Curry on 27 April 2012 seen on Aqua satellite (NASA/GSFC/Jeff Schmaltz/MODIS Land Rapid Response Team)
The new Smithsonian / USGS Weekly Volcanic Activity Report was published today and is summarized as follows: ...plus [lire toutes]
MVO reported that during 20-27 April activity at the Soufrière Hills lava dome was at a low level. ...plus [lire toutes]
Explosive activity at Shiveluch continued during 20-27 April. Ground-based observers and satellite imagery indicated that a viscous lava flow continued to effuse in the crater formed during a 2010 eruption and was accompanied by fumarolic activity. ...plus [lire toutes]
On 25 April a lahar traveled down Santa María's Rio Nima II drainage, carrying 1.5-m-wide blocks and tree branches. ...plus [lire toutes]
During 24 April-1 May explosions from Sakura-jima produced plumes that rose to altitudes of 1.8-2.7 km (6,000-9,000 ft) a.s.l. and drifted in multiple directions. ...plus [lire toutes]
During 25-26 and 28-30 April gas-and-steam plumes rose 0.5-2 km above Nevado del Ruiz's crater. Seismic signals indicated that an ash plume was emitted at 1248 on 30 April however cloud cover prevented observations. Seismicity fluctuated, but decreased. The Alert Level remained at II (Orange; "eruption likely within days or weeks"). [lire toutes]
Moderate seismic activity from Karymsky continued to be detected during 20-27 April, and indicated that possible ash plumes rose to an altitude of 2.5 km (8,200 ft) a.s.l. during 20 and 24-25 April. ...plus [lire toutes]
PHIVOLCS reported that the Alert Level for Bulusan was lowered to 0 (on a scale of 0-5) on 24 April following a decline in activity after a phreatic eruption on 13 May 2011. ...plus [lire toutes]
CENAPRED reported that gas-and-steam plumes, occasionally containing ash, rose from Popocatépetl during 25-29 April. ...plus [lire toutes]
Lokon volcano produced ash plumes rising to 3.7 km (12,000 ft) altitude and drifting 75 km N, observed from ground and satellite. [lire toutes]
According to a JMA report on 2 May, an eruption at Ioto (Iwo-jima) caused water discoloration to the NE. A new fumarole was also confirmed. [lire toutes]
Elevated surface temperatures were detected over Cleveland in satellite imagery during 25-29 April and possibly on 30 April. ...plus [lire toutes]
Darwin VAAC reported that during 25-26 April ash plumes from Batu Tara rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 37 km W and SW. During 30 April-1 May ash plumes again rose to an altitude of 2.4 km (8,000 ft) a.s.l. then drifted 37-55 km NW. [lire toutes]
mercredi, mai 02, 2012
 Ash eruption at Popocatépetl volcano on 2 May 2012 (CENAPRED webcam images)
A recently published study shows that Mt Merapi volcano near Yogyakarta has been inflating during the past 2 years, following its last and deadly eruption in 2010. ...plus [lire toutes]
Turrialba had a small phreatic explosion following an increase of seismic and degassing activity. [lire toutes]
mardi, mai 01, 2012
Tungurahua volcano had an eruption on 30 April, producing an ash and steam column rising 3 km above the crater. The eruption was accompanied by volcanic earthquakes and tremor, and caused ash fall in nearby communities. A lahar warning was issued as well. [lire toutes]
Lokon volcano erupted again at 11:55 a.m. local time on Tuesday 1 May. ...plus [lire toutes]
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