Suzanne De Berge emailed the following message regarding a notable increase in activity at Fuego volcano: ...mehr

Arenal, one of the few volcanoes with near-constant activity, continues to be in mild strombolian-type activity. ...mehr [alles lesen]

The volcanic unrest at Turrialba seems to intensify, and signs of a possible new eruption in the near to medium future are getting stronger: According to OVSICORI-UNA a gas-and-steam plume from Turrialba rose to an altitude greater than 5.3 km (17,400 ft) a.s.l. on 5 December. Fieldwork confirmed an unusual output of gas from several fumaroles along the S outer wall. Areas burned by acute acidification have extended in the last month. Pastures turned yellowish near the upper areas, and native and exotic tree species were impacted as well as birch tree patches along most drainages. Within the W crater, temperatures of fumaroles reached 280 degrees Celsius and native sulfur was present. ...mehr

The Indonesian Volcanological Survey has increased the alert level of Lokon volcano on 9 December because of increased seismicity and strong gas and steam emission from the crater lake. ...mehr [alles lesen]

Talang is becoming more active as judged from visual observations and seismicity . Ash and steam plumes from multiple craters rose to altitudes of 3.1-4.1 km (10,200-13,500 ft) a.s.l. during 27-29 November. A strong smell of sulfur dioxide gas was also reported. Visitors and tourists were advised not to go within a 3-km radius of the summit. ...mehr

In the recent days, Popocatepetl has been more active than usual. On 1 December, a larger explosion occurred and produced ash plume that rose to an altitude of 7.4 km (24,300 ft) a.s.l. and drifted N and then NE. Ashfall was reported in areas downwind. Based satellite observations from the Washington VAAC, the ash plume rose to an altitude of 9.1 km (30,000 ft) a.s.l.

There's new activity at Anatahan volcano. USGS reports small explosions occurring during the last week of November, accompanied by an increase in seismic activity.

Wir gerade zurück von Krakatau (und Kelud) - hier ist eine Zusammenfassung der unsere Bemerkungen Krakatau:
Zusammenfassung:
VolcanoDiscovery Expedition, dank der außergewöhnlichen gutes Wetter, konnten wir beobachten laufenden Anak Krakatau Ausbruch während 21-26 November: insgesamt ihre Tätigkeit war relativ konstant und reichten von starken strombolianische schwach vulkanianische Aktivität, wahrscheinlich nach zu vielen verschiedenen Phreatomagmatic und magmatische Aktivität innerhalb der Conduit.
Alle Aktivitäten, die von der neu gegründeten Krater auf der oberen Südflanke direkt unter der alten Gipfel-Krater des Anak Kraktau ist aufgetreten. Am 21. November der Krater hatte eine ovale Form und war ca. 50 x 70 m Durchmesser. Berichte der Lavaströme bereits aus dem Ausbruch konnten nicht überprüft werden und keine Einlagen von die Lavaströme wurden sichtbar, nur Trümmer ausgeworfen, Feste Blöcke und ein paar deformierte frisch Bomben.
Asche Entlüftung:
Die häufigste, typische Art der Ausmasses, die vorhanden sind, während die meiste Zeit war bestand in Asche Entlüftung. Dichten, dunklen Braun Braun, wogende Asche Wolken floh Impulse aus der Krater, stieg in der Regel 100-200 Meter und nahe-Konstante in Abständen von etwa 2 Minuten aufgetreten ist. At war aller Zeiten, die Asche Osten wegen in der Nähe von Konstanten westlicher Winde treiben. Nur wenige oder keine Blöcke wurden beobachtet, dass zusammen mit solchen Asche Wolken ausgeworfen. Am 24. November beobachteten wir Phasen wurde Asche Entlüftung kontinuierlich über mehrere Minuten.
Vulkanianische Ausbrüche:
Mehr unregelmäßig unterbrochen ungefähr 10-30 Minuten auseinander, heftiger, kleine Explosionen in vulkanianische-Typ die Asche Entlüftung Ereignisse. Die Explosionen bestand in einem plötzlichen Spray meist solide Felsen und einige Glühlampen-Schlacken, gefolgt von leistungsfähiger und turbulenten Asche Federn, die bis zu 1 km stieg.
Diese Typ-vulkanianische Explosionen tendenziell in der Regel treten nach Slighly längere Erholung Intervalle mit keine oder wenig sichtbar Aktivität im Krater und in den meisten Fällen, die Länge des Intervalls Ruhe mit der Kraft der Explosion korreliert war. Mehrere außergewöhnlich leistungsstarke Explosionen aufgetreten ist in Abständen von etwa 16-24 Stunden: stärksten aufgetreten geschah kurz nach Mitternacht am November 21-22, und die gesamte Insel Anak Krakatau mit glühenden Blöcke überschüttet, entzündete Bush wird ausgelöst, und produziert eine sehr laute Kanone-Schuss-Geräusche, die Windows an der Westküste 40 km entfernt rasselte. Andere ungewöhnlich großen Blasten trat beim um 02 auf 21 Nov, bei um 09 und 13:20 am 23.
Strombolianische Tätigkeit:
Aktivität verschoben vorübergehend in Richtung mehr strombolianische Typ Explosionen am Abend des 22 November: bis zum 01 am 23. November, die meisten Aktivitäten dann hell, Schlacken-reiche strombolianische Explosionen mit vielen frischen glühenden Bomben bestand, die nur relativ wenig Asche im Vergleich zu der preivious-Aktivität erstellt. Nach einigen der leistungsfähigeren strombolianische Explosionen beobachteten wir schwach, fast ununterbrochenen Lavaauswurf vom eine Vent im Krater.
Erhöhung Aktivität nach 23 Nov:
Frühzeitig 23 November, Aktivität wieder mehr Asche-Reich, wahrscheinlich Phreatomagmatic Ursprungs, Aktivität. Asche-Produktion und die durchschnittliche Gewalt die Einzelereignisse erhöhte Slighlty aber sichtbar in den nächsten zwei Tagen, während ein Rhythmus der Einzelereignisse nahe-Konstante in Abständen von etwa 2 Minuten beibehalten wurde. 24-25 November stieg Asche Federn in der Regel zu ...mehr [alles lesen]

Die strombolianische Aktivität des Anak Krakatau noch stattfindet mit Explosionen und heiße. Lavaströme sind die Inseln Anak Krakatau sichtbar. Die Warnstufe blieb bei
3. ...mehr

Ubinas volcano continues to produce sporadic explosions with ash plumes rising to altitudes of about 5-7 km (16,000-23,000 ft) a.s.l. ...mehr [alles lesen]

Tungurahua volcano continues its explosive eruptions producing ash plumes rising to altitudes of 6-9 km (19,700-30,000 ft) a.s.l. Ash ashfall was reported from multiple areas downwind, mainly to the W and SW. Loud roars and "cannon-shot" like detonations are heard in several areas near the volcano. IG reported the passing of a lahar on the SW flank that lasted about 30 minutes on 10 November. ...mehr

Seismic activity at Shiveluch volcano remains at highly elevated levels. KVERT assumes that the volcano is producing exposions with ash plumes rising to altitudes of 8.5 km (28,000 ft) a.s.l. as well as small pyroclastic flows. ...mehr

Based on information from the Tanzania MVO, the Toulouse VAAC reported that Ol Doinyo Lengai erupted on 7 November and remained active. According to Frederick Belton's website, an observer saw a "smoke" plume rise to an altitude of 3.2-3.5 km (10,500-11,500 ft) a.s.l. and drift WSW towards the Gol Mountains on 10 November.

Anak Krakatau weiterhin seine neue strombolianische Aktivität vom neuen Vent südlich des Kraters Gipfel.

...mehr

CVGHM lowered the Alert Status of Kelut on 8 November from 4 to 3 (on a scale of 1-4), due to a decrease in seismicity and deformation. Temperatures of the crater lake were measured at 75 deg C on 6 Nov, and 150-210 deg C on the surface of the new lava dome. According to a local news article, a volcanologist reported that the lava dome was 250 m in diameter and 120 m above the crater lake surface. On 11 November, a plume rose to an altitude of 3.7 km (12,000 ft) a.s.l. and ashfall was reported in several areas.
CVGHM recommended that evacuees could return to their homes, but should stay clear of the mountain within a 3-km radius was restricted.

Wir freuen uns, Sie darüber informieren zu können, daß die Winterreise in den Saronischen Golf vom 31 Dezember bis 7 Januar 2008 nun sicher stattfindet! ...mehr [alles lesen]

Es sind noch im Gange strombolianische Eruption von Anak Krakatau gemeldet.

[Translate to Deutsch:] There is still high activity inside the crater of mount Kelud. In the crater lake a small island is growing (probably a kind of lava dome). There is also a high seismic activity and many tremors that show upcomming lava. Steam from the cooking lake is rising up to 1000 m. It is possible that a big explosion may happen or a rupture of the new island inside the crater lake. The volcano is under close observation by volcanologists. ...mehr

As the news report, the lake in the Kelud crater has reached temperatures of more than 90 C. The heating of the crater lake indicates that magma is rising in the fault system of Keluds vent. Probably there is a volcano dome beeing built up in the crater that plugs the vent and leads to high preasure inside the system. In connection with overheated steam there may be a huge explosion of the crater top in the next hours or days. The region around the volcano is in highest danger of mud flows and pyroclastic flows. About 100.000 people living around the volcano have been evacuated already two weeks ago, but still a few people remain on their own risk in their homes.

Based on a Significant Meteorological Information (SIGMET) advisory,
pilot reports, and observations of satellite imagery, the Buenos Aires
VAAC reported that ash plumes from Ubinas rose to altitudes of 5.5-8.5
km (18,000-28,000 ft) a.s.l. and drifted NW and NE during 23-27
October.

It was reported that  ash-and-steam and ash plumes from Tungurahua rose to
altitudes of 5.5-6.5 km  during 23-30 October.
During 25-26 October, incandescence was observed at the summit and noises resembling "cannon shots".
On 28 October, ash plumes rose to 13 km (43,000 ft) a.s.l.
During 28-29 October, noises resembling blocks rolling down the flanks.

The Tokyo VAAC reported that eruption plumes from Suwanose-jima rose to an altitude of 1.5 km  during 26-28 October and drifted E and W.

Deformation-monitoring instruments indicated that during
24-30 October lava-dome growth at Mount St. Helens continued.

During 24-30 October the lava dome at Soufrière
Hills changed very little. Seismic activity was very low and low-level rockfall and pyroclastic flow activity continued.
During 25-26 October, vigorous lahar activity was noted, especially to the E, including the Tar River valley. Ashfall was visible over N Montserrat, possibly due to rockfall activity and steam venting.
On 30 October a small pyroclastic flow was observed in the Tar River valley. The Alert Level remained elevated at 4.

KVERT reported that seismic activity at Shiveluch was above background
levels during 19-26 October. Based on seismic interpretation, ash
plumes rose to an altitude of 6.9 km (22,600 ft) a.s.l. and small hot
avalanches occurred. Observations of video footage indicated that
gas-and-steam plumes rose to altitudes of 3.3 km (10,800 ft) a.s.l. on
21 and 25 October. Based on observations of satellite imagery, ash
plumes drifted SE on 19 October and a thermal anomaly was present in
the crater every day during the reporting period. The Level of Concern
Color Code remained at Orange.

The Washington VAAC reported that ash-and-gas plumes from Santa María's Santiaguito lava dome complex rose to an altitude of (17,000 ft) a.s.l. and drifted S on 26 October.

Based on information from JMA, the Tokyo VAAC reported that eruption
plumes from Sakura-jima rose to an altitude of 3.7 km (12,000 ft)
a.s.l. and drifted E on 29 October.

 Ash plumes from Rabaul caldera's Tavurvur cone rose
to altitudes of 2.7-3.7 km (3,900-15,400 ft) a.s.l. at the time of 29-30
October. Ashfall was reported in Rabaul town. Occasional incandescence
at the summit was observed.

It was reported that during 24-30 October fissure segment D from
Kilauea's 21 July fissure eruption continued to feed an advancing lava
flow. Observations on 26 October confirmed that a tube-fed pahoehoe flow along the N margin of the main channel advanced 2.4 km from the channel end. A few
small earthquakes were located beneath Halema'uma'u crater, and along
the lower SW rift zone and S flank faults during the reporting period.

Based on observations of satellite imagery, the Washington VAAC ...mehr [alles lesen]

KVERT reported that ash plumes from Chikurachki were visible on
satellite imagery and drifted NW on 20 October. Clouds obscured views
of the summit on other days during 19-26 October. The Level of Concern
Color Code remained at Orange

CVGHM reported that white and gray plumes from Soputan on 25, 26, 30 and 31 October rose to altitudes of 1.8-3.3 km. A lava flow traveled between 500-600 m down the W flank on 25 October. The Alert Level remained at 3 and villagers and tourists are advised not to go within a 6 km radius of the summit.

The Indonesian Maount Kelud volcano seems to have erupted like a top official said on Saturday. Based on seismograpic data there have been several eruptions that could not be seen, because of dense clouds over the mountains top. ...mehr