Mount Semeru, which is located on the border of Lumajang and Malang regencies, East Java (East Java), erupted again with an eruption column as high as 500 meters above the peak or approximately 4,176 meters above sea level (masl) today at around 9.33 WIB.

"The volcanic ash column was observed to be white to gray with moderate to thick intensity to the north," said Mount Semeru Observation Post Officer Yadi Yuliandi in a written statement received in Lumajang, Antara, Friday, September 13.

According to him, the eruption of the mountain which has an altitude of 3,676 meters above sea level was recorded on a seismograph with a maximum amplitude of 22 mm and a duration of 120 seconds.

The activity of Mount Semeru, which is the highest mountain on the island of Java, is still dominated by eruption/eruption earthquakes and based on data from officers, there were 88 earthquake observations with an amplitude of 10-23 mm, and a long earthquake of 59-161 seconds on Thursday (12/9).

Mount Semeru is still on Alert status, so the Center for Volcanology and Geological Hazard Mitigation (PVMBG) provides a number of recommendations, namely that people are prohibited from carrying out any activities in the southeast sector along Besuk Kobokan, as far as eight kilometers from the summit (the center of the eruption).

Then outside of that distance, people are not allowed to carry out activities at a distance of 500 meters from the riverbank (river border) along Besuk Kobokan, because it has the potential to be affected by the expansion of hot clouds and lava flows up to a distance of 13 km from the summit.

The community is also not allowed to move within a three km radius of the crater/peak of Mount Semeru, because it is prone to the danger of throwing stones (lightning).

In addition, it is necessary to be aware of the potential for hot clouds, lava avalanches, and lahars along rivers/valleys that originate at the peak of Mount Semeru, especially along Besuk Kobokan, Besuk Bang, Besuk Kembar, and Besuk Sat, as well as the potential for lahars in small rivers that are tributaries of Besuk Kobokan.


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