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Toutes les actualités et mises à jour sur les volcans:

lun., 31 déc. 2012, 09:21
Small pyroclastic flow from Shiveluch on 30 Dec 2012
Activity at Shiveluch has been relatively calm, but the slow extrusion of the lava dome inside the crater continues as incandescence and occasional explosions, but also occasional rockfalls and associated weak pyroclastic flows show. As our French colleagues from activolcans noticed, a small partial dome collapse occurred last night at 21h54 local time and produced a pyroclastic flow that traveled almost 1 km through the ravine at the base of the active dome. ...plus
dim., 30 déc. 2012, 11:52
Pacaya volcano in Guatemala is waking up. A series of 3 small explosions occurred yesterday morning and generated small ash plumes rising 500 m. The explosions were probably phreatic, but along with the previous explosions 10 days ago they likely indicate that magma has started to rise within the volcano and might reach the surface soon again. Strombolian and/or lava flow effusion activity, Pacaya's typical activity, could thus resume in a relatively short time. ...plus [lire toutes]
dim., 30 déc. 2012, 11:05
Image of Fuego early on 29 Dec 2012 showing the lava flow
Activity has remained unchanged with weak strombolian explosions (11 counted during 28-29 Dec) producing small ash plumes up to about 500 m high, and the continuing lava flow, about 500 m long on the upper southern slope.
dim., 30 déc. 2012, 11:05
The Santiaguito lava dome has been comparably calm with few or no explosive activity reported during the past days.
dim., 30 déc. 2012, 11:05
Small explosion during the night 28-29 Dec
The rate of small explosions and steam-ash emissions remains at moderate levels with 1-2 events per hour (39 during 28-29 Dec). Glow remains visible at night.
dim., 30 déc. 2012, 11:05
Seismic recording during 29 Dec 2012 (VACR station, OVSICORI)
Some elevated internal activity was observed on 29 Dec, but seismic activity has been calm again today.
dim., 30 déc. 2012, 11:05
Seismic signal from RETU station (IG)
Activity at Tungurahua has picked up again. During 29 Dec, the Instituto Geofísico (IG) reported 30 explosions over 24 hours of small to moderate size, sometimes accompanied by loud sounds and ejection of incandescent material. Ash plumes were reported reaching 25,000 ft (7.5 km) altitude. ...plus
dim., 30 déc. 2012, 11:05
Small explosion during the night 28-29 Dec
The rate of small explosions and steam-ash emissions remains at moderate levels with 1-2 events per hour (39 during 28-29 Dec). Glow remains visible at night.
dim., 30 déc. 2012, 11:05
Tremor amplitude and spectrum of White Island during the past 30 days (GeoNet)
Volcanic tremor reflecting fluid movements beneath White Island continues its slowly increasing trend.
dim., 30 déc. 2012, 11:02
Current seismic signal from CONE station (IG)
Sporadic small explosions and ash emissions continue, but at lower levels than during past months.

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