Krakatau volcano news & eruption updates:
Krakatau volcano (Sunda Strait, Indonesia): increasing activity changes to strombolian
Mon, 30 Dec 2019, 16:1716:17 PM | BY: T
Strombolian eruption at Krakatau yesterday (image: PVMBG)
The activity at the volcano has increased during the past days. Small to moderate explosive activity seems now to have become more frequent if not nearly continuous.
Seismic activity at Krakatau during the past weeks (image: Magma Indonesia)
VAAC Darwin reports continuous ash emissions to 8,000-10,000 ft (2.4-3 km) altitude, generating a steam and ash plume drifting SW for several tens of kilometers.
A webcam image shows that at least some of the explosions now generate incandescent tephra, which suggests that the eruption dynamics is changing from surtseyan (water-magma interaction) to strombolian (no water interacting), probably as accumulated material from the eruptions has sealed off the vent, which used to be in a lake-filled crater. It also means that increased amounts of fresh magma are likely on the way to the surface now.
This also fits the observation of increased periods of volcanic tremor recorded by the seismic network.
As soon as the weather conditions allow, we plan to revisit the island group to inspect the new activity. If anyone is interested, please look at our Krakatau Volcano Special expedition page.
Mon, 30 Dec 2019, 15:45
Mon, 30 Dec 2019, 09:45
Krakatau Volcano Volcanic Ash Advisory: CONTINUOUS VA UP TO FL100 EXT SW OBS VA DTG: 30/0930Z to 10000 ft (3000 m)
Mon, 30 Dec 2019, 01:15
Krakatau Volcano Volcanic Ash Advisory: VA ERUPTION TO FL080 MOV SW OBS VA DTG: 30/0105Z to 8000 ft (2400 m)
Sat, 28 Dec 2019, 23:45
Thu, 14 Nov 2019, 08:19
Krakatau volcano (Sunda Strait, Indonesia): weekly volcanic activity report 4 November-10 November 2019
PVMBG reported that during 4-10 November diffuse white plumes rose as high as 200 m above Anak Krakatau’s active vent. ... read all