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Liste archivée des actualités:

ven., 31 août 2007, 00:02
Moderately strong explosions continue at Tungurahua volcano.
jeu., 30 août 2007, 23:47
Data from deformation-monitoring instruments indicated that during 22-28 August lava-dome growth at Mount St. Helens continued. Seismicity persisted at low levels, punctuated by M 1.5-2.5, and occasionally larger, earthquakes. Clouds occasionally inhibited visual observations.
jeu., 30 août 2007, 23:45
MVO reported that during 21-28 August the lava dome at Soufrière Hills changed very little, based on visual observations. Seismic activity was very low and low-level rockfall activity continued. On 23 August, heavy rainfall triggered small rockfalls and four pyroclastic flows to the E down the Tar River Valley. Ash and steam emissions from the dome produced a plume that drifted W. A lahar occurred in the Belham river valley to the NW. The Alert Level remained elevated at 4 (on a scale of 0-5).
jeu., 30 août 2007, 23:42
KVERT reported that seismic activity at Shiveluch was above background levels during 17-24 August. Based on seismic interpretation, avalanches and ash plumes that rose to an altitude of 8.5 km (27,900 ft) a.s.l. occurred during the reporting period. Based on visual observation, ash plumes rose to an altitude of 5.5 km (18,000 ft) a.s.l. and drifted N and NE during 17-21 August. Incandescence at the lava dome and incandescent avalanches were seen at night on 21 August. Observations of satellite imagery revealed that a thermal anomaly was present in the crater during 17-24 August. The Level of Concern Color Code remained at Orange
jeu., 30 août 2007, 23:39
RVO reported that ash plumes from Rabaul caldera's Tavurvur cone rose to altitudes of 0.9-2.4 km (3,000-7,900 ft) a.s.l. during 22-29 August and drifted NW. Ashfall was reported in Rabaul Town and surrounding areas during 23-29 August. Seismic activity increased to a high level on 25 through 29 August. The ash emissions were accompanied by roaring noises. Incandescence at the summit was observed during the reporting period.
jeu., 30 août 2007, 23:29
HVO reported that fissure segment D from Kilauea's 21 July fissure eruption continued to feed an advancing 'a'a lava flow during 22-28
jeu., 30 août 2007, 23:23
Seismic activity at Karymsky was above background levels during 17-24 August, with 300-800 shallow earthquakes occurring daily. Based on seismic interpretation, ash plumes may have risen to an altitude of 5.7 km (18,700 ft) a.s.l. Observations of satellite imagery revealed that a thermal anomaly was present in the crater on 20 and 23 August. The Level of Concern Color Code remained at Orange.
jeu., 30 août 2007, 23:20
On 24 August, INSIVUMEH reported that fumarolic plumes from Fuego rose to an altitude of 3.9 km (12,800 ft) a.s.l. and drifted W. A lahar carried tree trunks, branches, and blocks down the Lajas drainage to the SE. A lahar again affected the drainage on 27 August. Explosions on 28 August produced ash plumes that rose to an altitude of 4.1 km (13,500 ft) a.s.l.
jeu., 30 août 2007, 23:00
Clouds obscured satellite and web camera views of Cleveland volcano during 22-28 August. A clear view of the crater on 23 and 28 August revealed thermal anomalies at the summit. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
jeu., 30 août 2007, 22:54
Based on observations of satellite imagery, the Darwin VAAC reported that an ash plume from Raung rose to an altitude of 4.6 km (15,000 ft) a.s.l. during 26-27 August and drifted E.

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