JAKARTA - Mount Semeru, which is on the border of Lumajang and Malang Regencies, East Java, has recorded seven eruptions in three hours with an eruption height of 300 meters to 800 meters above the peak on Wednesday morning.
The first eruption at 04.58 WIB with the height of the eruption column observed about 500 meters above the peak and the ash column was observed in gray with a thick intensity towards the northeast. The eruption was recorded on the seismograph with a maximum amplitude of 22 mm and a duration of 138 seconds.
"The second eruption occurred at 06.10 WIB with the height of the observed eruption column about 700 meters above the peak. When the report was made, the eruption was still going on," said Mount Semeru Observation Post Officer Liswanto as reported by ANTARA, Wednesday, February 4.
The height of the eruption column in the third eruption of Mount Semeru at 06.56 WIB decreased, namely observed 300 meters above the peak and the ash column was observed to be white to gray with a thin intensity towards the north.
The fourth eruption occurred at 07.05 WIB with the height of the observed eruption column about 600 meters above the peak and the ash column was observed to be white to gray with medium intensity towards the north. When the report was made, the eruption was still ongoing.
"Mount Semeru erupted again at 07.15 WIB with an observed eruption column height of about 800 meters above the peak and an observed ash column of white to gray with medium intensity towards the north," he said.
Then the sixth eruption was recorded at 07.46 WIB with the height of the observed eruption column about 400 meters above the peak and the seventh eruption occurred at 08.02 WIB with the visual eruption not observed because it was covered by fog.
Liswanto explained that Mount Semeru is in a Level III (Alert) volcanic activity status, so the Center for Volcanology and Geological Hazard Mitigation (PVMBG) has provided a number of recommendations, namely that the public should not carry out any activities in the southeast sector along Besuk Kobokan, as far as 13 kilometers from the peak (center of the eruption).
Outside this distance, he said, people should not carry out activities at a distance of 500 meters from the river bank (river border) along Besuk Kobokan because they have the potential to be hit by the expansion of the hot cloud and lava flow up to a distance of 17 kilometers from the peak.
"The public is also prohibited from carrying out activities within a radius of 5 kilometers from the crater/peak of Mount Semeru, because they are prone to the danger of stone throwing (pijar)," he said.
The public needs to be aware of the potential for hot clouds, lava flows, and lahar along the river/valley streams upstream of the summit of Mount Semeru, especially along Besuk Kobokan, Besuk Bang, Besuk Kembar, and Besuk Sat, as well as the potential for lahar in small rivers which are tributaries of Besuk Kobokan.
The English, Chinese, Japanese, Arabic, and French versions are automatically generated by the AI. So there may still be inaccuracies in translating, please always see Indonesian as our main language. (system supported by DigitalSiber.id)
