Harmonic tramor

Liswanto Head Post Monitoring Vulcanology Mount Semeru. Look at the watch, when monitoring carefully against the increase in the movement of the activity of Tremor Harmonic at Puncak Gunung Semeru Regency Lumajang Jatim.Jumat (17/8) during the ceremony of Independence Day Warning. Due to the irregularity of the eruption interval and the increase of Tremor Harmonic. The current conditions of the mountain are very dangerous, especially for the climbers. ANTARA/Cucuk Donartono/pd/07

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