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Archived news:

Friday, Jun 29, 2007

The dates for the new expedition to Erta Ale volcano and the Danakil depression in Ethiopia are now set at 25 Jan - 8 Feb. 2008. For details of the program, go here.

Tuesday, Jun 26, 2007

There is no lava on the surface of Kilauea volcano. Since the last, brief eruptive episode due to an intrusion in the upper eastern rift zone on 18/19 June, Pu'u O'o, the vent of the recent long-lasting eruption, is slowly deflating while HVO records continuing inflation at the summit caldera.
Wether this is the end of the longest known historic eruption on Hawaii - starting in 1983 and virtually ongoing uninteruptedly until 19 June 2006, is still unclear or a matter of definition. The near to medium future (weeks to months, probably) will also tell whether the present inflation of the summit caldera heralds some new summit activity, similar as in the early 1980s.

Friday, Jun 22, 2007

Based on observations from satellite imagery and Significant Meteorological Information (SIGMET) advisories, the Buenos Aires VAAC reported that during 13-17 June continuous emissions from Ubinas produced ash plumes to altitudes of 5.8-6.7 km (19,000-22,000 ft) a.s.l. Plumes drifted NNE, E, SE, SW, and W.

Data from deformation-monitoring instruments indicated that during 13-19 June lava-dome growth at Mount St. Helens continued. Seismicity persisted at lowlevels, punctuated by M 1.5-2.5, and occasionally larger, earthquakes. In some instances, clouds inhibited visual observations.

MVO reported that during 8-18 June the lava dome at Soufrière Hills changed very little based on visual observations, and seismic activity was very low. Low-level rockfall and pyroclastic flow activity continued. The Alert Levelremained at 4 (on a scale of 0-5).

KVERT reported that seismic activity at Shiveluch continued above background levels during 8-15 June and a thermal anomaly in the crater was detected on satellite imagery. Gas-and-steam plumes rose to altitudes of 4 km (13,100 ft) a.s.l. during 8-10 and 13 June. Ash plumes rose to altitudes of 4.5 km (14,800ft) a.s.l. on 8 and 10 June and were seen on satellite imagery drifting NW on 12 June. Based on seismic interpretation, multiple ash plumes rose to 6.3 km (20,700 ft) a.s.l. during 8-15. The Level of Concern Color Code remained at Orange.

Based on information from JMA, the Tokyo VAAC reported an explosion from Sakura-jima on 16 June. Ash was not detected on satellite imagery.

Based on seismic interpretation, IG reported that lahars occurred on the flanks of Reventador on 15 and 19 June.  According to the Washington VAAC, the IG reported that activity on 18 June possibly produced ash plumes that drifted NW. Ash was not visible on satellite imagery.

RVO reported that during 19-20 June, four explosions from Rabaul caldera's Tavurvur cone produced shockwaves that rattled windows of houses in Rabaul Townand surrounding areas. The explosions showered the flanks of the volcano with lava fragments. Ash plumes rose to an altitude of 2.7 km (8,900 ft) a.s.l. and drifted NW. Ashfall was reported from Rabaul Town and surrounding areas.

The Washington VAAC reported that a plume from Masaya composed of little to no ash was visible on satellite imagery on 12 June.

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