Visual data show that in the period from 1 January 2016 until March 7, 2016, emission column series have fluctuated but were stable at a maximum height of 500 m. A gray / black color in the column shows that volcanic materials are brought to the surface.
Seismicity is still dominated by the emission tremors, volcanic earthquakes and earthquake of avalanche whose number fluctuates, but still in very large numbers. An harmonic tremor was recorded, fluctuating and rising in February 2016. However, its magnitude was relatively stable during this period. This indicates that the activity of Gunung Ibu is dominated by surface activity or close to the surface / shallow and shows the continued migration of magma.
The number and duration of the avalanche earthquake associated with materials deposited in the northern part of the crater during this period is relatively stable. This indicates the absence of material accumulation.
The calculation of seismic amplitude (RSAM) recorded by seismic stations IBU conducted to estimate the evolution of the energy of the activity, from January 1, 2016 until March 7, 2016 is fluctuating and shows a trend to climbing since mid-late January and mid-February 2016.
Conclusion: On the basis of instrumental and visual observations and the potential danger of eruption of Mount Ibu, on March 8, 2016, the level of activity remains at Waspada (Level II). If changes, decreased / increase in volcanic activity, significantly, the Gunung Ibu activity level can be lowered / raised in accordance with the level of activity and threats. Intensive surveillance is conducted to assess the activities of Gunung Ibu, as well as for the understanding of its activity.
March 13 , 2016. Ibu , Indonesia :
Source : VSI.
Photo : B Duick / Volcanodiscovery / Twitter 14.11.2014