Volcano news: Lokon

Lokon volcano (North-Sulawesi, Indonesia): seismic swarm, eruption warning

mer., 9 mars 2016, 12:06
12:06 PM | AUTEUR : T
Earthquake swarm at Lokon volcano on 8 Mar 2016 (VSI)
Earthquake swarm at Lokon volcano on 8 Mar 2016 (VSI)
Seismicity at Lokon during the past weeks (VSI)
Seismicity at Lokon during the past weeks (VSI)
A warning was issued for the volcano and its alert level raised to 3 ("siaga" - alert, on a scale of 1-4) last Monday after a seismic swarm was detected to occur under the edifice.
The previous day (7 Mar), PVMBG recorded 25 deep and 138 shallow volcanic quakes, 23 rockfall signals as well as a tremor signal. In addition, deformation (inflation) was measured to occur under the Tompaluan crater.
While no to little changes were seen in surface activity (degassing), these geophysical parameters seem to suggest that internal pressure in the hydrothermal system of the volcano has recently increased and the risk of sudden explosions (phreatic or phreatomagmatic) has to be considered elevated at the moment.
Visitors and locals are advised not to approach the crater within a radius of 2.5 km.

Actualités précédentes

mer., 13 janv. 2016, 16:23
Seismic activity at Lokon volcano 1-12 Jan 2016 (VSI)
The volcano remains at significant unrest and moderate to large explosions could occur any time, the latest evaluation report of the volcano observatory states and alert level is being maintained at 3 ("siaga") on a scale of 1-4. ... Read all
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