Mount Semeru Enam Kali Erupsi Senin Pagi, Kolom Abu Capai 1 Kilometer

LUMAJANG - Mount Semeru, which has a height of 3,676 meters above sea level (msl), has recorded six eruptions with an eruption height of 300 meters to 1 kilometer on Monday, January 19,

The first eruption occurred at 00.22 WIB, then consecutively at 00.36 WIB, 00.50 WIB, 05.19 WIB, 06.44 WIB, and 08.36 WIB.

"The eruption with the highest eruption occurred at 05.19 WIB with an observed eruption column height of about 1,000 meters above the peak or 4,676 meters above sea level," said Mount Semeru Observation Post Officer, Liswanto, quoted by Antara, Monday morning.

According to him, the column of ash observed was white to gray with medium intensity towards the northeast. When this report was made, the eruption was still ongoing.

The activity of Mount Semeru on Monday at 00.00-06.00 WIB was recorded 36 times of eruption/erupting earthquakes with an amplitude of 12-22 mm and earthquake duration of 86-156 seconds, then 3 times of aftershocks with an amplitude of 4-7 mm and earthquake duration of 33-73 seconds.

"Mount Semeru also experienced 3 times Harmonic with an amplitude of 10-11 mm, and the earthquake lasted 118-360 seconds, then 1 time Deep Tectonic Earthquake with an amplitude of 7 mm, S-P 19 seconds and the earthquake lasted 39 seconds," he said.

Liswanto explained that the highest mountain on Java is still in the standby status or Level III, so the recommendation of the Center for Volcanology and Geological Hazard Mitigation (PVMBG) is that the public should not carry out any activities in the southeast sector along Besuk Kobokan, as far as 13 km from the peak (center of the eruption).

"Outside this distance, the public does 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 km from the peak," he said.

The public is also not allowed to carry out activities within a radius of 5 km from the crater/peak of Mount Semeru because they are prone to the danger of stone throwing (pijar).

It is also necessary to be aware of the potential for hot clouds, lava ejection, and lahar along the river/valley flow 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.