Do, 30. Mär 2006, 16:19
After the 17 March eruption at Green Lake on Raoul Island, no new eruptions occurred and seismicity declined through 24 March. New Zealand scientists found that many new craters had formed in and around Green Lake and that pre-existing 1964 craters had eactivated. The main steam columns were derived from Crater I, Marker Bay, and Crater XI. The eruption blew over mature trees as far as 200 m from the eruption site and deposited dark gray hydrothermal mud and ballistic blocks.
Do, 30. Mär 2006, 16:17
Pacaya volcano is in mild strombolian activity, with lava flows extending ~100-150 m down the volcano's S and SW flank.
Do, 30. Mär 2006, 16:14
Fuego volcano continues its weak strombolian activity, ejecting incandescent material ~50-75 m high and producing gas plumes to ~300 m above the volcano (13,300 ft a.s.l.). Short pyroclastic avalanches occur on the upper flanks. On 28 March, lava flowed ~450 m S and avalanches occurred from the lava-flow fronts. ->More on Fuego
Do, 30. Mär 2006, 16:13
Colima continues its mild activity with occasional ash emissions (a few per day); the highest plume during the past week reached 6.1 km (20,000 ft) a.s.l. on the 26th of March 2006.
Do, 30. Mär 2006, 16:10
Small phreatic eruptions began at Poás on 24 March 2006. The eruptions originated from the bottom of the volcano's Caliente Lake. Witnesses described a sudden emission of water and sediments S of the lake. Roaring was heard in a nearby tourist area and weak earthquakes were felt.
OVSICORI-UNA visited the E side of the volcano on 25 March and confirmed that water, blocks, and sediments from the bottom of the lake had been ejected.Several dozens of impact craters were seen with diameters between 15 and 60 cm, extending E as far as 700 m. Blocks were found that ranged in diameter from a few to 50 cm wide. During 22-27 March, harmonic tremor was recorded. On the 27th, there was a reduction in seismicity and it returned to normal levels. No deformation was measured at the volcano. A news article reported that the area around the volcano was closed to visitors.
Do, 30. Mär 2006, 16:06
Mi, 29. Mär 2006, 06:00
During 29 March to 2 April, small-to-moderate explosions at Tungurahua consisted of gas, steam, and small amounts of ash. During the report period, ash fell in the Bilbao, Choglontos, Puela, and Manzano sectors, and incandescent blocks rolled down the volcano's NW flank.
Mi, 29. Mär 2006, 06:00Increased fumarolic activity occurred at Ubinas during the end of March. A Universidad de San Agustin scientist who visited the volcano on 31 March found strong steam-and-ash emissions occurring. Also, leaves of nearby crops were burned and a sound similar to a jet engine emanated from the vent area.
Mi, 29. Mär 2006, 06:00
According to news reports, an eruption began at Ol Doinyo Lengai around 30 March, forcing villagers living near the volcano to evacuate. An article stated that, "Eyewitnesses said they heard a rumbling noise before the volcano began discharging ash and lava, prompting local residents to flee the area in their hundreds. District officials estimated that about 3,000 people from Nayobi, Magadini, Engaruka, Malambo, Ngaresero, Gelai Bomba, and Kitumbeine villages left their homes within a few hours of the eruption..." There were reports of polluted water sources and destroyed vegetation, but no reports of deaths or injuries.
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Mi, 29. Mär 2006, 06:00Growth of the new lava dome inside the crater of Mount St. Helens continued during 29 March to 3 April, accompanied by low rates of seismicity, low emissions of steam and volcanic gases, and minor production of ash. Although the overall level of seismicity remained low, the eruption of lava into the crater continued as was evidenced by ongoing rockfalls and continuous GPS measurements made on the growing lava lobe.
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Mi, 29. Mär 2006, 06:00
During 24-31 March, lava-dome growth at Soufrière Hills was focused towards the E, with a lava lobe growing in that direction and the majority of rockfalls and pyroclastic flows occurring in the SE and NE sectors of the volcano. The largest pyroclastic flows traveled as far as 2 km NE down Tar River Valley. The sulfur-dioxide flux averaged 523 metric tons per day.
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Mi, 29. Mär 2006, 06:00During 24-31 March, activity at Santa Ana decreased to low levels in comparison to the previous 4 months of moderate activity. During the report period, seismicity was at relatively low levels, steam plumes occasionally rose ~200 m above the volcano (or 8,400 ft a.s.l.), and the daily sulfur-dioxide flux was between 500 and 1,000 metric tons. The Alert Level remained at red, the highest level, within 5 km of the volcano's summit crater.
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Mi, 29. Mär 2006, 06:00
As of 31 March, no new eruptive activity had occurred at Raoul Island after the 17 March eruption. Seismicity continued to decline and Green Lake's water level continued to rise in response to the eruption. Raoul Island remained at Alert Level 2 (minor eruptive activity).
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Mi, 29. Mär 2006, 06:00The Washington VAAC reported that ash from Popocatépetl was visible on satellite imagery on 3 April at 0245 at a height of ~7.3 km (~24,000 ft) a.s.l., drifting S. The Mexico City MWO indicated that there was an eruption around this time that emitted small amounts of ash.
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Mi, 29. Mär 2006, 06:00
Following phreatic eruptions that began at Poás on 24 March, seismicity decreased at the volcano by 27 March. In addition, harmonic tremor that was recorded during the heightened activity ceased. As of the 27th, no significant deformation was recorded at the volcano and abundant evaporation continued at Caliente Lake.
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Mi, 29. Mär 2006, 06:00During 16 February to 31 March, low-level Vulcanian activity continued at Langila's Crater 2. Eruptive activity was characterized by low-energy emissions of diffuse pale gray ash between 30 January and 7 February. Activity changed to subcontinuous forceful emissions of dark gray ash on 1, 2, 6, 7, and 9 March.
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Mi, 29. Mär 2006, 06:00
During 29 March to 3 April, lava from Kilauea flowed off of a lava delta into the ocean at the East Lae`apuki entry. Background volcanic tremor was at normal levels at Kilauea's summit. Small, shallow earthquakes continued beneath the summit area and upper E rift zone at a fluctuating rate.
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Mi, 29. Mär 2006, 06:00An increase in the energy of earthquakes at Galeras, which began on 28 March, ended on the 29th. The number of earthquakes beneath the volcano decreased during 28 March to 3 April (an average of 66 earthquakes was recorded daily), in comparison to the previous week (an average of 89 earthquakes was recorded daily). During the report period, steam columns rose up to ~500 m above the volcano (or 15,700 ft a.s.l.) and the outer layer of the lava dome at the volcano's summit cooled in comparison to previous weeks.
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Mi, 29. Mär 2006, 06:00
Based on information from the Mexico City MWO, the Colima Observatory, and satellite data, the Washington VAAC reported that there were several eruptions at Colima during 1-3 April. The highest rising resultant ash plume reached ~7.9 km (26,000 ft) a.s.l. after an eruption on 2 April at 1052.
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Mi, 29. Mär 2006, 06:00During 16 February to 31 March, activity at Bagana was at moderate levels. Mostly gas emissions occurred, but on 27 March an ash cloud was emitted. During 15-31 March, observers noted moderate-to-bright incandescence, projections of lava fragments, and a lava flow traveling down the volcano's SSW flank.
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Mi, 29. Mär 2006, 06:00
Low-level eruptive activity continued at Augustine during 24-31 March. Signals continued to be recorded by the seismic network that were associated with occasional hot block-and-ash flows, rock avalanches, rockfalls, and lava flows. Small and dilute ash clouds resulting from these processes were likely confined to the immediate vicinity of the volcano.
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Mi, 29. Mär 2006, 06:00OVSICORI reported that on 2 April around 1000 a small pyroclastic flow traveled down Arenal's W flank.
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So, 26. Mär 2006, 03:24
Poás volcano erupted after 12 years of dormancy with two small steam and ash eruptions on 25th of March 2006 from the crater lake known as Laguna Calients. Authorities consider closing the easy-to-access crater rim to the public.
Sa, 25. Mär 2006, 02:39
The dome growth of Soufrière Hills volcano is now focused in the summit area and towards the east and northeast. The northern side of the lava dome has shown little change during the past week, as MVo reports. Rockfalls and pyroclastic flows have been restricted to the Tar River Valley and they were particularly numerous on 19-20 March. The largest pyroclastic flows have travelled up to 2km down Tar River valley.
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Fr, 24. Mär 2006, 09:52
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Ash plume from Anatahan volcano on 19 March 2006 (NASA).
Anatahan volcano shows new activity. The volcano emitted a moderately large plume of ash on March 19, 2006 as was detected by the Moderate Resolution Imaging Spectroradiometer (MODIS) flying onboard the Aqua satellite.
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Fr, 24. Mär 2006, 09:41
Strong strombolian activity continues at Karymsky volcano with no significant changes. The volcano emitted frquently over the past week, and satellite imagery showed debris, most likely ash, draped along the sides of the mountain. When the skies were clear over the volcano, satellites also observed a thermal anomaly at the summit. In late March 2006, the USGS placed Karymsky at alert code orange, the second-highest level of concern. ->More on Karymsky
Mi, 22. Mär 2006, 06:00
Web-camera images of Veniaminof on 24 March showed a steam-and-ash plume drifting from the summit cone at a height less than 2.3 km (7,600 ft) a.s.l. This level of activity was similar to activity on 23 March, but higher than activity on 21 and 22 March when a very diffuse steam-and-ash plume was confined to the summit caldera. The flow of seismic data from Veniaminof stopped on the evening of 21 March due to technical problems.
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Mi, 22. Mär 2006, 06:00On 24 March around noon, small phreatic eruptions began at Poás. The eruptions originated from the bottom of the volcano's Caliente Lake. Witnesses described a sudden emission of water and sediments S of the lake. Roaring was heard in a nearby tourist area and weak earthquakes were felt.
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