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Philippines: restlessness at Kanlaon 4 September 2009

Posted by admin in activity reports, Kanlaon, Philippines.
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Kanlaon volcano on Negros island in the Philippines is showing signs of restlessness, reports the Philippine Institute of Volcanology and Seismology (Phivolcs).

Phivolcs has issued a Volcano Advisory for Kanlaon reporting that between 23 August and 1 September the volcano ‘manifested a remarkable rise in its seismic activity as a total of two hundred fifty seven (257) volcanic earthquakes were detected by the seismic network’, which is a ‘notably higher’ level of seismic activity than the normal level, ‘which generally varies from 0 to 4 events detected in 24 hours during quiet periods’. The epicentres of the earthquakes have been clustered under the north-west flank of the volcano. Phivolcs suggests that this seismic activity ‘may indicate movements of an active local fault at the slope of the volcano which may be induced by pressure beneath the volcano’. There has been no sign of any increase in steam emissions from the summit crater. Kanlaon is currently at Alert Level 0.

The Global Volcanism Program describes Kanlaon, a 2435-metre stratovolcano, as ‘the most active of the central Philippines’. The volcano has erupted nearly thirty times since 1866, typically with small or moderate phreatic explosive activity. Kanlaon’s most recent eruption was a VEI=2 event that lasted from 3 June to 25 July 2006.

News
Kanlaon volcano shows restiveness – Inquirer.net, 4 September 2009
Kanlaon restive again: Phivolcs – Visayan Daily Star, 4 September 2009

Information
Global Volcanism Program: Kanlaon – summary information for Kanlaon (0702-02=)
Philippine Institute of Volcanology and Seismology – website for Phivolcs

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SI/USGS Weekly Volcanic Activity Report, 26 August-1 September 2009 3 September 2009

Posted by admin in activity reports, Alaska, Batu Tara, Chaitén, Chile, Dukono, eruptions, Guatemala, Hawaii, Indonesia, Japan, Kamchatka, Kanlaon, Karymsky, Kilauea, Kizimen, Kolokol Group, Koryaksky, Mexico, Pacaya, Papua New Guinea, Philippines, Popocatépetl, Rabaul, Russia, Sakura-jima, Shiveluch, Suwanose-jima, United States, Weekly Volcanic Activity Reports.
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SI/USGS Weekly Volcanic Activity Report 26 August-1 September 2009

The Smithsonian Institution/United States Geological Survey Weekly Volcanic Activity Report for 26 August-1 September 2009 is available on the Global Volcanism Program website. The following is a summary and not a substitute for the full report.

New activity: Kanlaon (Philippines), Kolokol Group (Russia), Koryaksky (Russia).

Ongoing activity: Batu Tara (Indonesia), Chaitén (Chile), Dukono (Indonesia), Karymsky (Russia), Kilauea (Hawaii, USA), Kizimen (Russia), Pacaya (Guatemala), Popocatépetl (Mexico), Rabaul (Papua New Guinea), Sakura-jima (Japan), Santa María (Guatemala), Shiveluch (Russia), Suwanose-jima (Japan).

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Alert level raised for Kanlaon, Philippines 19 February 2008

Posted by admin in activity reports, Kanlaon, Philippines.
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The Philippine Institute of Volcanology and Seismology (Phivolcs) increased the alert level at Kanlaon, the most active volcano of the central Philippines, on 10 February 2008 following a swarm of low-frequency tremors over the preceding 24 hours. On 19 February Phivolcs confirmed that volcanic quakes and emissions of steam and gas were continuing, and that the raised alert level would stay in place. No evacuation plans are in hand, but an exclusion zone around the area of highest danger is in place.

Kanlaon, also known as Canlaon, is situated on the island of Negros. Recent eruptive activity has consisted of phreatic explosions producing short-range ashfall.

Information
Smithsonian Institution Global Volcanism Program – summary information for Kanlaon (0702-02=)
Philippine Institute of Volcanology and Seismology (Phivolcs) – Philippine government volcanological authority main site, when it’s working

News
Phivolcs monitors abnormality of Kanlaon volcano – Sun.Star Dumaguete, 19 February 2008
Volcan : Canlaon, Philippines, 2435 m – Activolcans, 18 February 2008

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