Krakatau volcano (Sunda Strait, Indonesia): sudden eruption yesterday sends ash to 1,500 m altitude

Wed, 27 Oct 2021, 09:44
09:44 AM | BY: T
Eruption from Krakatau yesterday (image: PVMBG)
Eruption from Krakatau yesterday (image: PVMBG)
An eruption occurred from the active crater yesterday. The event was likely a phreatic explosion, i.e. steam driven only, caused by overheated water flashing to steam. It generated an ash- and steam column that rose to 1,500 m and rifted east.
The volcano observatory reported a seismic signal with a maximum amplitude of 45 mm and a duration of 45 seconds. During the past weeks, there have been no particular signs of unusual activity and relatively few quakes at the volcano (only about 6 daily quakes on average), which is why the explosion came as a surprise.

Previous news

Sat, 7 Aug 2021, 16:23
This morning's Sentinel-2 image in false color showing the island of Anak Krakatau and the steam plume and thermal anomaly from the crater lake
The volcano remains active with at least some sort of eruptive activity going on: a cloud-free satellite image taken earlier today shows a pulsating steam plume coming from the lake-filled crater. A low to moderate thermal anomaly can be seen on processed data as well. ... Read all
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