2012 October

6-7th October 2012

Published: 2012

Updated: 28/03/2018 – Replaced photos with newly edited high-resolution photos.

Type of activity observed:

Anak Krakatau didn`t produce any eruptions on this visit, one month after my last visit during the big eruption. According to local knowledge, Anak hasn’t erupted since the eruption in September. During this visit it only emitted a weak and irregular plume of steam. During nighttime we observed some small spots of glowing lava, near and on the lava flow on the western flank on the volcano, which during daytime still is steaming.

The most interesting aspect of this visit was to study the new lava-flows of September 2012.  Lava flows went down both the western and eastern sides of the volcano, and extended the Eastern shoreline by as much as 100m. Both flows are of significant size.  Media that reported on the September eruption all mentioned the lava flow on the eastern flank, but few mention the significance of the flow on the western flank. It was to my big surprise that the lava flow on the western flank of the volcano was also immense, although not with as big volume as the one on the eastern flank. The summit, as I also noted in the September observation, was significantly altered during the September eruption.

 

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Anak Krakatau with the eastern lava flow that was emplaced in September 2012
Krakatau Anak Krakatau October 2012 Indonesia Volcano Andersen Oystein
The lava flow was still degassing.

Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein

Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein
Upclose with the lava-flow
Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein
The point where the lava flow extended the shoreline
Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein
Southern flank
Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein
The other lava-flow of the West side of Anak Krakatau is also of significant size and volume

Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein

Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein
Anak-Krakatau seen from the West

Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein

Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein
Incandescence is seen from the summit crater and on the outer flank.

Krakatau Anak Krakatau Lava-flow October 2012 Indonesia Volcano Andersen Oystein