Semeru Eruption Wednesday Night With A Eruption As High As 1,000 Meters
Mount Semeru, which is on the border of Lumajang and Malang Regencies, East Java, experienced an eruption with an eruption as high as 1,000 meters above the peak on Wednesday night.
"There was an eruption of Mount Semeru at 19.16 WIB with an eruption column height of about 1,000 meters above the peak or 4,676 meters above sea level (masl)," said Mount Semeru Observation Post Officer Yadi Yuliandi as reported by ANTARA, Wednesday, May 8.
According to him, the ash column was observed to be gray with moderate to thick intensity to the west. The eruption was recorded on a seismograph with a maximum amplitude of 22 mm and a duration of 118 seconds.
Based on officers' records, Mount Semeru, which is the highest mountain on the island of Java, was recorded as having erupted eight times with the first eruption occurring at 00.09 WIB, but the visual eruption was not observed and when the report was made, the eruption was still ongoing.
The Center for Volcanology and Geological Hazard Mitigation (PVMBG) provides a number of recommendations related to the status of Mount Semeru which is still vigilant or level II, namely that people are prohibited from carrying out any activities in the southeast sector along Besuk Kobokan as far as 8 kilometers from the summit (the center of the eruption).
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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 kilometers from the summit.
"People are also not allowed to move within a radius of three kilometers from the crater/peak of Mount Semeru because it is prone to the dangers of incandescent stones," he said.
The public also needs to be aware of the potential for hot clouds, lava avalanches, and rain lava along rivers and 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 lava in small rivers that are tributaries from Besuk Kobokan.