Dated on January 14, 2016, 18:00
It was recorded one (1) eruption earthquake with a maximum amplitude of 36 mm, a length of 12.4 seconds. One (1) volcanic earthquake (VA) with a maximum amplitude of 36 mm, 8.64 seconds, a constant tremor with a maximum range of 3-23 mm (dominant 4mm).
During the period from January 7 to 14, 2016 it was recorded volcanic earthquakes (VA), shallow volcanic earthquake (VB), local tectonic earthquakes (TL) and distant tectonic (TJ) and the dominant presence a constant tremor with a range of maximum amplitude of 2 to 36 mm.
The seismic measurements in real time of RSAM amplitude until the date of January 14, 2016 show the energy fluctuations observed in the period from 7 to 14 Jan 2016.
Visually, the activity of the Mount Bromo was shrouded in fog. Large emissions from white to brown / gray, ash and smoke were observed with great thick column of smoke and ash up to 1,800 meters above the top or 4129 meters above the level of the sea.
Recording of the earthquake were dominated by constant fluctuation with a maximum amplitude in the range of 2 to 36 mm, with a dominant 5 mm. Volcanic earthquakes (VA), a local tectonics (TL) and distant (TJ) were recorded but the number was not significant.
The appearance of ground magmatic eruptions and sudden emissions of volcanic materials as heavy ash fall and incandescent stone throwing began around the crater within a radius of 2.5 kilometers around the eruption center.
Based on observational data, analysis of seismic data, visual, and potential dangers of eruption until the date of January 14, 2016, 18:00, the activity level of G. Bromo is maintained at activity level III (Siaga).
The level of activity of G. Bromo will be raised / lowered if there is an increase / decrease in activity, intensively monitored by volcanic experts of Pusat Vulkanologi dan Mitigasi Bencana Geologi.
January 18, 2016. Bromo , Indonésia :
Source : VSI
Photos : Oystein Lund Andersen .