SANGIHE ISLANDS - The Center for Volcanology and Geological Hazard Mitigation (PVMBG) of the Ministry of Energy and Mineral Resources in the past week recorded 217 seismic activity at Mount Awu, Sangihe Islands Regency, North Sulawesi (North Sulawesi).
"The seismicity fluctuates, it can increase, it can go down too. The fluctuation here is high fluctuating," said PVMBG Volcano Coordinator, Oktory Prambada as reported by ANTARA, Friday, July 15.
He said, if there is an increase in status, it means that it has entered a new phase, but for now it is still on standby (level III).
He said that during normal activities there are only tectonic earthquakes, no volcanic earthquakes, while volcanic earthquakes in normal conditions range from 1-5 events per month.
Eight gusts with an amplitude of 3-10 millimeters were recorded for 15-40 seconds and one harmonic earthquake with an amplitude of eight millimeters for 120 seconds.
39 shallow volcanic earthquakes were also recorded with an amplitude of three to 71 millimeters with an earthquake duration of three to 40 seconds
65 times deep volcanic earthquake with an amplitude of four to 69 millimeters.
PVMBG also recorded five local tectonic earthquakes with an amplitude of seven to 62 millimeters and an earthquake duration of 20-59 seconds.
Furthermore, there were 99 distant tectonic earthquakes with an amplitude of two to 47 millimeters and an earthquake duration of 35-232 seconds.
Previously, he mentioned that the mountain, which has an altitude of 1,320 above sea level, is still in the seismic crisis phase.
These earthquakes are associated with the release of pressure from the magma chamber in the form of intensive surface earthquakes.
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