Mayon volcano: eruption news and updates
Mayon Vulkan (Philippinen): steigende Tätigkeit?
Even the number of earthquakes from Mayon have decreased, the volume of sulfur dioxide emissions has increased sharply. May be a sign of a comming eruption?Authorities declared four villages off-limits to people.
We regret to post a very sad volcano-related news entry. Heavy rainfall from the exceptionally strong typhoon Durian that hit the Philippines a few days ago triggered a series of huge mud flows and landslides on the slopes of Mayon volcano (which itself has been quiet for over a month now, but accumulated lots of fresh deposits in its last eruptive phase in the summer 2006).
The lahars (mud flows) buried dozends of villages and hundreds of people lost their lives.
Seismic activity and lava extrusion from Mayon decreased during 6-12 September. Ground-deformation measurements showed an overall deflation. On 11 September, the Alert Level was lowered from 4 to 3 and around 30,000 people who had been evacuated early in August were allowed to return to their homes.[mehr]
Thick blocky lava lava continues to flow from Mayon volcano. The main active flow on the SE slope reaches about 800 m elevation where the flow front begins to disintegrate into loose blocks that roll into the Buyoan ravine.
Occasional explosions at Mayon continued during the past weeks. According to seismic data, four explosions were registered on 31 August. Ashfall was reported in surrounding cities including Tabaco (about 13 km NW) and Guinobatan (about 13 km SW). One small explosion was registered on 3 September.
Lava flows from Mayon traveled SSE a maximum distance of 4 km from the summit toward the Bonga gully and branched off to the W and E. Incandescent blocks shed from the toe and margins of the flows were visible at night and traveled SE. Ash plumes generated from the rolling blocks produced light ash fall 8.5 km E of the summit in Sta. Misericordia. On 20 July, pyroclastic flows were observed on the SE slopes prompting ~100 families to evacuate. On 22 July, lava flows advanced NE towards the Mabinit channel. The lava flows were within the 6 km radius Permanent Danger Zone.... [mehr]
The number and size of incansecent rock falls from the active lava dome as well as SO2 emission at Mayon volcano are increasing according to the observatory, that maintains that pyroclastic flows or an explosive eruption can occur any time now. The volcano is at alert level 3 with a non-enforced exclusion zone of 6 km around the summit.[mehr]