An Earthquake Of Eruption Occurred 30 Times On Mount Semeru This Morning
JAKARTA - The activity of Mount Semeru, which is on the border of Lumajang Regency with Malang, East Java, was dominated by eruptions or eruptions 30 times on Saturday morning, July 13, the period at 00.00-06.00 WIB.
The public is asked to be aware of the potential for hot clouds, lava avalanches, and lahars along rivers/valleys that originate at the peak of the Semeru Volcano, 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.
"In seismic observations, 30 earthquakes were recorded with an amplitude of 14-23 mm and an earthquake duration of 93-174 seconds," said Mount Semeru Observation Post Officer Yadi Yuliandi, in a written report received in Lumajang.
In addition to earthquake eruptions, he continued, there were 13 earthquake avalanches with an amplitude of 3-4 mm with an earthquake of 40-133 seconds, then three earthquake gusts with an amplitude of 3-5 mm and an earthquake of 38-72 seconds.
"Visual observations, Mount Semeru is clearly visible until it is covered by fog 0-II. Crater smoke is not observed. The weather is clear to cloudy, the wind is weak to moderate to the west," he said.
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He said, Mount Semeru is still on Alert or Level III status, so the Center for Volcanology and Geological Hazard Mitigation (PVMBG) provides recommendations so that people do not carry out any activities in the southeast sector along Besuk Kobokan as far as 13 kilometers from the summit (the center of the eruption).
Outside of that distance, he said, the community was also advised not to carry out activities at a distance of 500 meters from the river bank (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 17 km from the summit.
Then residents are also prohibited from doing activities within a radius of five kilometers from the crater/peak of Mount Semeru, because they are prone to the danger of throwing stones (pijar).