REPUBLIKA.CO.ID, BANDARLAMPUNG -- Mount Anak Krakatau in the Sunda Strait, South Lampung Regency, Lampung Province experienced 336 eruptions and 41 of them were observed with a high ash column of 200-600 meters above the peak. It happened throughout Tuesday (Oct 23) until Wednesday morning.
According to the Meteorology, Climatology and Geophysics Agency (BMKG) in a online release its side which had been forwarded to Windi Cahya Untung, an officer of the ESDM Ministry, Geological Agency, PVMBG Observation Post of Mount Anak Krakatau was received at Bandarlampung on Wednesday morning, mentioning the night visuals of CCTV were observed by fire rays and material throws incandescent.
Reports on the activities of Mount Anak Krakatau during the observation period Tuesday, October 23, 2018, at 00.00 to 24.00 WIB, showed that there were 336 eruptions, 40-58 mm amplitude, 34-162 seconds duration.
Also read: 40 volcanic tremors recorded on Mount Anak Krakatau
Shallow volcanic 9 times, 6-12 mm amplitude, duration 7-12 seconds. Volcanic In 7 times, amplitude 35-48 mm, S-P 1-15 seconds, duration of 15-21 seconds. Continuous tremor amplitude 2-30 mm (dominant 5 mm).
Volcanoes in the sea in the Sunda Strait with a height of 338 meters above sea level, along the observations the weather is clear, cloudy, and cloudy. The wind blows weakly to the north, and northeast, and east. Air temperature is 25-33 degrees Celsius, air humidity is 58-89 percent, and air pressure is 0-0 mmHg.
Visually clear mountain, mist 0-I, up to mist 0-III. The observed weak pressure crater smoke is white with a thin intensity and 25-50 meters high above the top of the crater. There was a thud and felt a vibration with weak to strong intensity at the Gunung Anak Krakatau Observation Post (the glass and the post door vibrated).
Then, during the observation period Wednesday, October 24, 2018, 00.00 to 06.00 WIB, as reported by Jumono, officer of the Ministry of Energy and Mineral Resources, Geological Agency, PVMBG Observation Post of Mount Anak Krakatau, showed eruption seismicity activity 39 times, amplitude 40-58 mm, duration 31-59 seconds.
Shallow volcanic 9 times, amplitude 7-40 mm, duration 10-14 seconds. Volcanic in 4 times, amplitude 42-50 mm, S-P 1.2-2 seconds, duration 8-20 seconds.
Continuous tremor (Microtremor) is recorded with an amplitude of 5-27 mm (dominant 5 mm). The weather is bright and cloudy. The wind blows weakly towards the north. Air temperature is 24-25 degrees Celsius and air humidity is 81-100 percent.
Visual mist 0-III. Crater smoke is not observed.
Observed from CCTV fire and flares of lava, there was a thud, a glass vibration that was felt weakly at Mount Anak Krakatau Observation Post.
Previously, in the report of Mount Anak Krakatau's activity in the observation period Tuesday, October 23, 2018, at 6:00 p.m. to 10:00 p.m., it was delivered by Windi Cahya Untung, officer of the Ministry of Energy and Mineral Resources, Geological Agency, PVMBG Observation Post Gunung Anak Krakatau, mentioning the eruption seismic activity 89 times, amplitude 45 -58 mm, duration 34-87 seconds.
Volcanic in 3 times, amplitude 35-48 mm, S-P 1.2-1.5 seconds, duration 15-20 seconds. Continuous tremor (Microtremor) is recorded with an amplitude of 2-22 mm (dominant 5 mm).
Throughout the observation at that time, the weather was clear and cloudy. The wind blows weakly towards the east. Air temperature is 25-29 degrees Celsius and air humidity is 76-87 percent.
Visual mist 0-III. Crater smoke is not observed.
Night visuals from CCTV were observed by fire rays and flares of incandescent material. There was a thud and felt a vibration with weak to strong intensity at the Mount Anak Krakatau Observation Post (the glass and the post door vibrated).
Conclusion of the level of activity of Mount Anak Krakatau Level II (Waspada), so that the community / tourists are not allowed to approach the crater within a 2 km radius of the crater.
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