Bulusan volcano erupted on Sat. 29 April 2006 at 10:44 am (0244 GMT) spewing a column of ash about 1.6 km high. Ash fall occurred in surrounding villages. There were no reports of casualties or damage.
Close-up into one of the holes with the branch sticking inside
We are proud to announce a scientific discovery that has been made in close connection to one of our past tours on Santorini: A new absolute date for the great Minoan eruption on Santorini volcano has been published yesterday in the issue of Science Magazine (28 April, 2006). It confirms an early date for the eruption putting it at 1627-1600 BC with very good confidence.
As KVERT reports, strombolian-to-vulcanian activity continued at Karymsky during the past weeks. Satellite imagery showed ash plumes extending ~40-145 km E and SE of the volcano, and a large thermal anomaly at the volcano's crater. Karymsky remained at Concern Color Code Orange.
Over the past weeks, weak strombolian activity continued at Fuego volcano, ejecting incandescent material ~50-75 m high, and gas plumes to ~150-200 m above the volcano. Incandescent landslides traveled down the volcano's S and W flanks. Lava flowed ~400 m S towards Taniluyá ravine.
As of 13 April, seismicity at Raoul Island had returned to normal and Green Lake's water level was dropping. Raoul Island remained at Alert Level 2 (minor eruptive activity).
The eruption at Augustine may be approaching its end.
Activity at Augustine declined to low levels during 7-14 April, with seismicity decreasing to slightly above background levels, and rockfalls and avalanches decreasing in frequency in comparison to previous weeks. Low-level eruptive activity continued, consisting of slow effusion of lava at the summit accompanied by small rockfalls and avalanches on the volcano's flanks. Satellite imagery showed a decline in thermal output consistent with the decreased activity. Sulfur-dioxide gas measurements showed continued high levels of magmatic gas emissions that may have been associated with degassing of lava at the summit of the volcano. Augustine remained at Concern Color Code Orange.
Jorge Clavero Ribes from the Chilean Geological Survey (Sernageomin) and Juan Cayupi-Chilean Emergency Office (ONEMI) sent the following report about the recent eruptions at Lascar volcano:
Dome observations suggest continued lava extrusion throughout the reporting period. Growth has occurred over a sector extending from the east around to the north. The eastward-facing lobe has continued to grow on the northeast side of the dome and a whale-back feature was observed on 18 April. Numerous small rockfalls continued to fall from the active eastern flanks of the dome, adding to the talus in the upper reaches of the Tar River valley. Rockfall activity has been accompanied by minor ash venting. Due to the unusual wind conditions, the plume has predominantly been transported to the north and northwest shifting to east on 20 April. Due to this and frequent rockfall activity light ashfalls have occurred over much of the island.
Wed, 26 Apr 2006, 06:00
During 28 April-1 May, small-to-moderate explosions at Tungurahua produced gas, steam, and small amounts of ash. Seismicity was at relatively high levels. A plume rose to a maximum height of ~2 km above the volcano (or 23,050 ft a.s.l.) on 28 April.
Read all
Wed, 26 Apr 2006, 06:00According to INGEMMET, on 22 April at 0715 an explosion began at Ubinas that produced an ash-and-gas plume that reached a height between 1 and 3 km above the volcano (or 21,900 and 28,450 ft a.s.l.). This was the highest rising plume since activity began in late March. Continuous emissions occurred until 1600.
Read all
Wed, 26 Apr 2006, 06:00
On 28 April, CVGHM observed a lava flow from Merapi traveling ~1.5 km SW to the Lamat River. On the 28th, seismicity was dominated by multiphase earthquakes. Signals from landslides, rockfalls, and low-frequency events were also recorded.
Read all
Wed, 26 Apr 2006, 06:00Growth of the new lava dome inside the crater of Mount St. Helens continued during 26 April to 2 May, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash. Seismicity continued as very small periodic earthquakes, recurring every few minutes, punctuated by occasional larger earthquakes.
Read all
Wed, 26 Apr 2006, 06:00
Observations of Soufrière Hills during 21-28 April revealed that lava extrusion continued. Dome growth occurred over a sector extending SW to NE. The eastward facing lobe continued to grow on the NE side of the dome and a central spine was observed on 28 April.
Read all
Wed, 26 Apr 2006, 06:00Phreatomagmatic eruptions began at San Cristóbal on 21 April. Seismic tremor increased at the volcano that same day around 1300. Small explosions produced gas-and-ash plumes during 21-23 April that deposited small amounts of ash in nearby towns.
Read all
Wed, 26 Apr 2006, 06:00
Hydrothermal activity at Raoul Island's Green Lake crater had declined significantly as of 28 April and the lake water level continued to fall. The Alert Level at Raoul Island was reduced from 2 to 1 (some signs of volcano unrest), on a scale of 0-5.
Read all
Wed, 26 Apr 2006, 06:00Ash from Manam was observed on satellite imagery on 28 April at a height of ~3 km (10,000 ft) a.s.l.
Read all
Wed, 26 Apr 2006, 06:00
Based on information from a significant meteorological forecast (SIGMET), the Buenos Aires VAAC reported that on 28 April a W-drifting ash cloud was observed at a height around 6.1-7.6 km (20,000-25,000 ft) a.s.l. The Aviation Color Code was at Red. Later that day activity was no longer observed and the Aviation Color Code was reduced to Green.
Read all
Wed, 26 Apr 2006, 06:00During 26 April to 2 May, lava from Kilauea continued to flow off of a lava delta into the ocean at the East Lae`apuki entry. No surface lava flows were visible on the Puluma pali fault scarp, as has been the case since 8 February. Continuous low-level volcanic tremor was recorded at Kilauea's summit, accompanied by a few small earthquakes.
Read all
Wed, 26 Apr 2006, 06:00
Intermittent eruptive activity continued at Karymsky during 21-28 April. Based on interpretations of seismic data, ash plumes rose to a height of ~3.8 km (12,500 ft) a.s.l. during the report week.
Read all
Wed, 26 Apr 2006, 06:00INGEOMINAS reported that Galeras remained at a critical state during 21 April to 1 May, with a partially solidified lava dome in the main crater and low levels of seismicity. The sulfur-dioxide flux continued at low levels. Galeras remained at Alert Level 2 (likely eruption in days or weeks).
Read all
Wed, 26 Apr 2006, 06:00
According to news reports, on 29 April at 1044 an explosion at Bulusan produced an ash plume that rose ~1.6 km above the volcano (or 10,400 ft a.s.l.). Ash fell on nearby villages. People are not permitted to enter within 4 km of the volcano's crater.
Read all
Wed, 26 Apr 2006, 06:00A plume emitted from Barren Island was visible on satellite imagery on 2 May at a height near 3.7 km (12,000 ft) a.s.l.
Read all
Wed, 26 Apr 2006, 06:00
AVO reduced the Concern Color Code at Augustine from Orange to Yellow on 28 April. As of the 28th, instrumental and visual observations indicated that the growth of the summit lava dome and lava-flow emissions had stopped, or continued at very low rates. Seismic data showed that rockfalls and avalanches occurred at a diminished level.
Read all
Wed, 26 Apr 2006, 06:00Based on information from JMA, the Tokyo VAAC reported that an explosion at Sakura-jima on 28 April produced an ash plume that rose to 2.1 km (7,000 ft) a.s.l. An explosion on 1 May produced a plume that rose to an unknown height.
Read all
Tue, 25 Apr 2006, 09:52
Ebeko volcano shows signs of possible renewed (likely phreatic or phreatomagmatic) activity from its intracrater cone. Over the past days, an increase of steam and gas emission has been noted.
Mon, 24 Apr 2006, 10:51
The activity at Ubinas volcano continues. Sixteen families from the southern Andean town of Querapi were evacuated to a village three hours away according to news reports. About 60 other residents had already been evacuated from the same village over the past three days. Between 40 to 60 livestock, including vicuna and llamas, died near the slopes of the crater, and many more were reported ill, probably from drinking acid-contaminated water or eating ash-coated grass.
Wed, 19 Apr 2006, 08:27
![]()
Lascar's eruption on 18 April 2006 (Photo REUTERS).
Lascar volcano IN TheCentral Andes (Northern Chile) started erupting on Tuesday morning (18 April, 2006). A column of steam and ash rose to about 3,000 m (1,864 miles) above the summit crater.
Wed, 19 Apr 2006, 08:11
Tugurahua's strombolian acitivity has been increasing lately; in particular, the Institute of Geophysics and Volcanology in Quito reported an episode of lava fountaining from the crater last Sunday.
