Krakatau volcano: eruption Oct 2018 - vulcanian explosions and lightning

Along with a small group, Tom Pfeiffer stayed on the island group during a Volcano Special tour from 13-19 Oct: the volcano's activity during this time fluctuated between phases of mild to strong ash venting along with occasional strombolian activity, as well as intermittent powerful vulcanian-type explosions. In this section, some impressions of the violent vulcanian explosions are shown:
After several hours of mild to strong ash emissions and strombolian-type activity, a sudden much stronger explosion with loud detonation sound occurs around 16:30 pm local time. (Photo: Tom Pfeiffer)
After several hours of mild to strong ash emissions and strombolian-type activity, a sudden much str... [info]
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Another vulcanian explosion follows shortly after it has become dark. Numerous small lightnings develop in the dense ash plume. (Photo: Tom Pfeiffer)
Another vulcanian explosion follows shortly after it has become dark. Numerous small lightnings deve... [info]
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During our first evening on Krakatau (13 Oct 2018), vulcanian explosions occur at intervals varying between 30-60 minutes. (Photo: Tom Pfeiffer)
During our first evening on Krakatau (13 Oct 2018), vulcanian explosions occur at intervals varying ... [info]
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This eruption covered most of the cone of Krakatau with glowing material. (Photo: Tom Pfeiffer)
This eruption covered most of the cone of Krakatau with glowing material. (Photo: Tom Pfeiffer) [info]
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40 minutes later (at 21:23 local time), a very similar lava-rich eruption occurs. (Photo: Tom Pfeiffer)
40 minutes later (at 21:23 local time), a very similar lava-rich eruption occurs. (Photo: Tom Pfeiff... [info]
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After almost exactly one hour, the next eruption takes place, showing lots of lightning in the eruption column. (Photo: Tom Pfeiffer)
After almost exactly one hour, the next eruption takes place, showing lots of lightning in the erupt... [info]
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View of the aftermath of the explosion: the cone is covered with glowing lava bombs and a dense ash plume rises about 2 km above the cone of Anak Krakatau. (Photo: Tom Pfeiffer)
View of the aftermath of the explosion: the cone is covered with glowing lava bombs and a dense ash ... [info]
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After midnight to 14 Oct, eruptions decrease again and become more sporadic. (Photo: Tom Pfeiffer)
After midnight to 14 Oct, eruptions decrease again and become more sporadic. (Photo: Tom Pfeiffer) [info]
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Early morning of 14 Oct, vulcanian eruptions pick up again, often with loud cannon-shot like sounds. (Photo: Tom Pfeiffer)
Early morning of 14 Oct, vulcanian eruptions pick up again, often with loud cannon-shot like sounds.... [info]
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A similar explosion two hours later. (Photo: Tom Pfeiffer)
A similar explosion two hours later. (Photo: Tom Pfeiffer) [info]
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The series ends around lunchtime with a relatively strong explosion sending an ash plume that rose about 3 km height. (Photo: Tom Pfeiffer)
The series ends around lunchtime with a relatively strong explosion sending an ash plume that rose a... [info]
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A very strong explosion occurs in the late afternoon, sending blocks into the sea, while we were observing from the end of the forest of Anak Krakatau. After this event, no stronger explosions occurred during 36 hours. (Photo: Tom Pfeiffer)
A very strong explosion occurs in the late afternoon, sending blocks into the sea, while we were obs... [info]
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Early morning of 16 Oct, another strong explosion occurs, sending glowing bombs in all directions. (Photo: Tom Pfeiffer)
Early morning of 16 Oct, another strong explosion occurs, sending glowing bombs in all directions. (... [info]
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Vulcanian explosion at noon of 16 Oct. (Photo: Tom Pfeiffer)
Vulcanian explosion at noon of 16 Oct. (Photo: Tom Pfeiffer) [info]
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After a relatively calm period in daytime, another train of vulcanian explosions begins in the evening of 16 Oct. (Photo: Tom Pfeiffer)
After a relatively calm period in daytime, another train of vulcanian explosions begins in the eveni... [info]
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Vulcanian eruption with lots of lightning (evening of 16 Oct). (Photo: Tom Pfeiffer)
Vulcanian eruption with lots of lightning (evening of 16 Oct). (Photo: Tom Pfeiffer) [info]
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A comparably weak explosion on the evening of 16 Oct. (Photo: Tom Pfeiffer)
A comparably weak explosion on the evening of 16 Oct. (Photo: Tom Pfeiffer) [info]
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Stronger explosion during the night 16-17 Oct. (Photo: Tom Pfeiffer)
Stronger explosion during the night 16-17 Oct. (Photo: Tom Pfeiffer) [info]
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Reflection of lava glow from an eruption seen from Rakata island. (Photo: Tom Pfeiffer)
Reflection of lava glow from an eruption seen from Rakata island. (Photo: Tom Pfeiffer) [info]
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Comparison between Anak Krakatau seen from the same point in Nov 2010 and Oct 2018 showing the substantial growth of the cone has undergone, mostly during the (still ongoing) 2018 eruption between June-Oct (not much significant activity had occurred during the years in between).  (Photo: Tom Pfeiffer)
Comparison between Anak Krakatau seen from the same point in Nov 2010 and Oct 2018 showing the subst... [info]
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See also: Video from the 17 Oct explosion
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