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LUMAJANG, 4/11 - SEISMOGRAF. A person observes the seismograph at the Post of Conservation of Mount Api (PGA) Semeru in Gunung Sawur, Lumajang, East Java, Sunday(4/11). Mount Semeru activity monitoring relies on seismic monitoring, visual monitoring at night cannot be carried out due to the unsupported weather conditions, and the damage of the two fruits of existing monitoring equipment in the peak area of Semeru experienced damages namely Solar Panel Cell (solar powered earthquake vibration measuring instrument) and Tiltmeter ( mountain deformation measuring instrument). PHOTO ANTARA/Seno S./nz/07.

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