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July 2009 Volcano News | John Seach
Reports are posted in Eastern Australian Time (UT +10 hr).
Archived Volcano News
Sunday 26th July 2009
Shiveluch Volcano, Kamchatka, Russia
An eruption occurred at Shiveluch volcano on 25th July 2009. Ash emissions reached height of 23,000 ft, and 170 earthquakes were measured in 24 hour period. Some earthquakes were followed by ash emissions and avalanches. Volcanic activity over the past 3 years has significantly altered the shape of the volcano, with the crater increasing in size by 50% and the slopes becoming steeper.
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Volcanoes of Kamchatka...
Sunday 26th July 2009
Sarychev Volcano, Kurile Islands
Activity at Sarychev volcano, Kurile Islands continues at a low level. Since 15th June, there have been no large explosions. Sarychev Volcano is not monitored with ground-based instruments. The volcano produced a large eruptions in June 2009.
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Volcanoes of Kurile Islands...
Saturday 25th July 2009
Chaitén Volcano, Chile
Seismicity has remained high at Chaiten volcano, Chile, during the period 16-22 July. The eruption continues unchanged with a column of ash and steam rising 1.5 km above the summit. Block and ash flows still persist, indicating the dome complex has continued to grow, particularly towards the western sector of the caldera. Some strong emissions of gas correlated with seismic activity. Dome collapse remains a danger and may affect adjacent valleys. Significant pyroclastic material has accumulated in the adjacent valleys, and pose a lahar risk after heavy rain. Alert level RED remains at Chaiten volcano due to continued dome growth, pyroclastic flow risk, and potential for lahars.
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Volcanoes of Chile...
Sunday 19th July 2009
Barren Island Volcano, India
Eruption of Barren Island volcano, India today. Ash emission to 500 ft elevation drifting 25 nautical miles NE.
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Volcanoes of India...
Friday 17th July 2009
Stromboli Volcano, Italy
During the period 6-12 July 2009, eruptions continued from 4 vents at Stromboli volcano in Italy. Two vents were active in the north crater, and two in the south crater. The north crater showed short eruptions which ejected bombs, lapilli and fine ash. The intensity of eruptions was average, with emissions to a height of 150 m above the vent. During the reporting period, there were an average of about 15 explosions per hour.
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Volcanoes of Italy...
Thursday 16th July 2009
Chaitén Volcano, Chile
Eruptive activity continues at Chaiten volcano in Chile. Growth of the summit lava dome creates an explosion and pyroclastic flow hazard. Adjacent valleys contain pyroclastic material which may be mobilised after heavy rain and create lahars. Chaiten volcano remains on alert level RED.
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Volcanoes of Chile...
Friday 10th July 2009
Mayon Volcano, Philippines
Mayon volcano in the Philippines has been raised from Alert Level 1 (low level
unrest) to Alert Level 2 (moderate unrest). Beginning June 2009 seismic activity increased to the same level when a phreatic explosion occurred last August 2008. Ground uplift of one centimetre has been measured, and a summit glow was visible from Lignon Hill Observatory. An aerial survey on 8th July, 2009, showed a cone-shaped pile of hot, steaming old rocks at the summit. The low frequency volcanic earthquakes and ground uplift may indicate that new magma is rising towards the surface. A 6-km radius Permanent Danger Zone and the 7-km Extended Danger Zone on the southeast flank of the volcano are off-limits at Mayon volcano.
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Volcanoes of Philippines...
Sunday 5th July 2009
Mayon Volcano, Philippines
There are signs of unrest at Mayon Volcano in the Philippines after an increase in summit crater glow has been observed. This is caused by a rise in magma levels at the volcano. The Philippine Institute of Volcanology and Seismology has also recorded an inflation of the volcano. Alert level one is maintained at Mayon volcano and residents and tourists are advised not to enter the 7 km radius extended danger zone.
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Volcanoes of Philippines...
Saturday 4th July 2009
Kilauea Volcano, Hawaii
An orange night glow has returned to Halemaumau crater at Kilauea volcano in Hawaii. Three days ago a collapse in the summit temporarily blocked the vent. On Thursday night (Hawaiian time) lava level rose in the vent and consumed the debris which was creating the blockage. Lava continues to flow through tubes to the coast, entering the ocean at Waikupanaha and Kupapa`u. Surface lava flows are visible on the pali adjacent to Royal Gardens subdivision. No incandescence has been recorded at Pu`u `O`o crater on the east rift zone since 12th September 2008.
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Volcanoes of Hawaii...
Saturday 4th July 2009
Chaitén Volcano, Chile
Eruptive activity continues at Chaiten volcano in Chile. Over the past week there has been a decrease in earthquake number and magnitude, with 17 earthquakes recorded per day. Ash emissions rise 1.5 km above the summit. A lava dome continues to grow in the summit crater, which may collapse generating ash and block flows in the adjacent valleys. Dome growth is mostly in the western side of the caldera. Adjacent valleys contain ash deposits which may mobilise in heavy rains, causing lahars. Chaiten volcano remains on alert level RED.
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Volcanoes of Chile...
Friday 3rd July 2009
Kilauea Volcano, Hawaii
A collapse occurred at the summit vent in Kilauea volcano, Hawaii on 30th June. The collapse occurred at 1:38 PM (Hawaiian Standard Time) Tuesday afternoon, and blocked the summit vent. The event produced a brown plume, booming noises, and ground shaking which was felt at Hawaii Volcano observatory and Jaggar Museum. Between 2:30 PM and 3:30 PM, a section of the floor of Halemaumau Crater collapsed, widening the west rim of the summit vent. By nightfall, the evening glow from Halemaumau vent disappeared. Recently the night glow has attracted crowds of tourists at Jaggar Museum which overlooks Halemaumau crater.
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Volcanoes of Hawaii...