Mayon volcano, Philippines: eruption 2018 (part 2, 25-27 Feb) - explosive activity

After a pause of 2 days with almost no ash emissions, mild explosive activity resumed on 24 Feb evening (but could not be well observed then due to heavy cloud cover). The lava flow activity continued with little changes, although seemed to decreased gradually during the days were were still there (until 27 Feb):
[previous: Part 1 - lava flows]
25 Feb afternoon: Mayon volcano behind a row of palm trees. (Photo: Tom Pfeiffer)
25 Feb afternoon: Mayon volcano behind a row of palm trees. (Photo: Tom Pfeiffer) [info]
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The southern lava flow becomes visible after sunset. (Photo: Tom Pfeiffer)
The southern lava flow becomes visible after sunset. (Photo: Tom Pfeiffer) [info]
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A small explosive eruption occurs (so-called lava fountain), ejecting a small ash plume and incandescent blocks to approx. 100-200 m above the summit. (Photo: Tom Pfeiffer)
A small explosive eruption occurs (so-called lava fountain), ejecting a small ash plume and incandes... [info]
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Ash plume drifting to the west; the SE lava flow is visible only from the side on the right flank, as the observation position is SW from the summit. (Photo: Tom Pfeiffer)
Ash plume drifting to the west; the SE lava flow is visible only from the side on the right flank, a... [info]
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Mayon with a steam plume and the southern and southeastern lava flows seen from a hill in Legazpi, with parts of the city at the foot of the volcano. (Photo: Tom Pfeiffer)
Mayon with a steam plume and the southern and southeastern lava flows seen from a hill in Legazpi, w... [info]
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While the lava flows are no longer incandescent over their whole length, sometimes strong glowing rockfalls are observed, especially on the Miisi lava flow (S side). (Photo: Tom Pfeiffer)
While the lava flows are no longer incandescent over their whole length, sometimes strong glowing ro... [info]
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View of the volcano during near full moon from near Cagsawa. (Photo: Tom Pfeiffer)
View of the volcano during near full moon from near Cagsawa. (Photo: Tom Pfeiffer) [info]
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Small explosive activity; during the night of 25-26 Feb, the explosions become more frequent, and later decrease again. (Photo: Tom Pfeiffer)
Small explosive activity; during the night of 25-26 Feb, the explosions become more frequent, and la... [info]
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Lava flows and a small ash plume, about 400 m tall, from the explosions in the previous picture. (Photo: Tom Pfeiffer)
Lava flows and a small ash plume, about 400 m tall, from the explosions in the previous picture. (Ph... [info]
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One of the (comparably) stronger lava fountaining events in a sequence. (Photo: Tom Pfeiffer)
One of the (comparably) stronger lava fountaining events in a sequence. (Photo: Tom Pfeiffer) [info]
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The "lava fountains", visually more similar to strombolian explosions, erupt from at least 2 different vents in the summit crater. This one ejects bombs to at least 2-300 m height. (Photo: Tom Pfeiffer)
The "lava fountains", visually more similar to strombolian explosions, erupt from at least 2 differe... [info]
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Most explosive activity only lasts few tens of seconds, but some up to perhaps a minute or two. (Photo: Tom Pfeiffer)
Most explosive activity only lasts few tens of seconds, but some up to perhaps a minute or two. (Pho... [info]
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As a result of the somewhat stronger explosions, a rather dense ash plume rises. (Photo: Tom Pfeiffer)
As a result of the somewhat stronger explosions, a rather dense ash plume rises. (Photo: Tom Pfeiffe... [info]
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Another explosive sequence starts; two different vents generating the explosions can be clearly distinguished. (Photo: Tom Pfeiffer)
Another explosive sequence starts; two different vents generating the explosions can be clearly dist... [info]
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One of the vents generates oblique jets of incandescent bombs towards the east (r). (Photo: Tom Pfeiffer)
One of the vents generates oblique jets of incandescent bombs towards the east (r). (Photo: Tom Pfei... [info]
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Zoom onto another relatively strong explosion some minutes later. (Photo: Tom Pfeiffer)
Zoom onto another relatively strong explosion some minutes later. (Photo: Tom Pfeiffer) [info]
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Over the course of about 8 hours, I counted approx. 30 explosions of various size. (Photo: Tom Pfeiffer)
Over the course of about 8 hours, I counted approx. 30 explosions of various size. (Photo: Tom Pfeif... [info]
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The sky is covered by a shifting blanket of clouds, dimming the moonlight more or less. (Photo: Tom Pfeiffer)
The sky is covered by a shifting blanket of clouds, dimming the moonlight more or less. (Photo: Tom ... [info]
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Dog's nose in the ash plume. (Photo: Tom Pfeiffer)
Dog's nose in the ash plume. (Photo: Tom Pfeiffer) [info]
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Another stronger explosive event, which lasted about 2 minutes. (Photo: Tom Pfeiffer)
Another stronger explosive event, which lasted about 2 minutes. (Photo: Tom Pfeiffer) [info]
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The result is a dense ash plume drifting westwards. (Photo: Tom Pfeiffer)
The result is a dense ash plume drifting westwards. (Photo: Tom Pfeiffer) [info]
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Symmetrical explosion from the western (central) vent in the crater. (Photo: Tom Pfeiffer)
Symmetrical explosion from the western (central) vent in the crater. (Photo: Tom Pfeiffer) [info]
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Similar eruption a few minutes later. (Photo: Tom Pfeiffer)
Similar eruption a few minutes later. (Photo: Tom Pfeiffer) [info]
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A smaller explosion from the vent towards the eastern crater area, with a more oblique direction of the ejected bombs. (Photo: Tom Pfeiffer)
A smaller explosion from the vent towards the eastern crater area, with a more oblique direction of ... [info]
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Explosion and the upper parts of the lava flows now in the second half of the night with no more moon illuminating the volcano. (Photo: Tom Pfeiffer)
Explosion and the upper parts of the lava flows now in the second half of the night with no more moo... [info]
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26 Feb: clouds come and only rarely go, while ash emissions have been very frequent today. (Photo: Tom Pfeiffer)
26 Feb: clouds come and only rarely go, while ash emissions have been very frequent today. (Photo: T... [info]
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As it gets evening, the volcano clears up a bit; the first glowing bombs can be seen when enlarging the picture of the ash plume. (Photo: Tom Pfeiffer)
As it gets evening, the volcano clears up a bit; the first glowing bombs can be seen when enlarging ... [info]
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However, as night falls, explosions more or less cease and clouds play with the volcano. (Photo: Tom Pfeiffer)
However, as night falls, explosions more or less cease and clouds play with the volcano. (Photo: Tom... [info]
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At around 7pm, a rare window of almost no clouds allows to see two of the active lava flows. Only the upper part of them seems to be alimented (compare with pictures in previous gallery from 22-24 Feb). (Photo: Tom Pfeiffer)
At around 7pm, a rare window of almost no clouds allows to see two of the active lava flows. Only th... [info]
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Moonlight illuminating Mayon and the landscape on its lower slopes, with coconut groves. (Photo: Tom Pfeiffer)
Moonlight illuminating Mayon and the landscape on its lower slopes, with coconut groves. (Photo: Tom... [info]
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Wide-angle night-time view of Mayon, seen from one of the river valleys used as quarries for sand, gravel and boulders. (Photo: Tom Pfeiffer)
Wide-angle night-time view of Mayon, seen from one of the river valleys used as quarries for sand, g... [info]
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Dense steam cloud illuminated by the moon. (Photo: Tom Pfeiffer)
Dense steam cloud illuminated by the moon. (Photo: Tom Pfeiffer) [info]
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It seems that the phase of frequent explosions and ash emissions already ended. Only a single small explosion occurs shortly before the volcano gets shredded again in clouds, the only one we could observe during the night 26-27 Feb. (Photo: Tom Pfeiffer)
It seems that the phase of frequent explosions and ash emissions already ended. Only a single small ... [info]
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Last view of Mayon before the summit disappears in the clouds again. (Photo: Tom Pfeiffer)
Last view of Mayon before the summit disappears in the clouds again. (Photo: Tom Pfeiffer) [info]
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27 Feb: As we wait inside the airport terminal, a small pyroclastic flow occurs, triggered by a partial collapse of the southern lava flow. (Photo: Tom Pfeiffer)
27 Feb: As we wait inside the airport terminal, a small pyroclastic flow occurs, triggered by a part... [info]
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Approaching Manila city. (Photo: Tom Pfeiffer)
Approaching Manila city. (Photo: Tom Pfeiffer) [info]
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