Mt. Merapi, Java, Indonesia
MOUNTAIN ACTIVITY REPORT OBSERVATION PERIOD 12-03-2021 00: 00-06: 00 WIB VOLCANO Merapi (2968 masl), Sleman, Magelang, Boyolali, Klaten, Yogyakarta Special Region and Central Java METEOROLOGY Cloudy and cloudy weather. The wind was blowing weakly to moderate to the east. Air temperature 13-23 ° C, air humidity 67-76%, and air pressure 836-940 mmHg. VISUAL ● Mount fog 0-I to fog 0-II. Crater smoke was not observed. ● 17 times of incandescent lava avalanches with a maximum sliding distance of 1,000 m to the southwest .. EARTHQUAKES ■ Miscarriage (Quantity: 32, Amplitude: 3-32 mm, Duration: 11-77 seconds) ■ Blowing (Quantity: 4, Amplitude: 3-11 mm, Duration: 9-13 seconds) ■ Hybrid / Multiple Phase (Quantity: 1, Amplitude: 6 mm, S-P: 0.5 seconds, Duration: 10 seconds) OTHER DESCRIPTION Nil CONCLUSION Activity Level G. Merapi Level III (Standby) RECOMMENDATION 1. Current hazards in the form of lava avalanches and hot clouds in the south-southwest sector include the Yellow, Boyong, Bedog, Krasak, Bebeng and Putih rivers for a maximum of 5 km and in the southeast sector, the Gendol river, as far as 3 km. Meanwhile, the ejection of volcanic material in the event of an explosive eruption can reach a radius of 3 km from the summit. 2. Communities not to carry out any activities in areas of potential danger. 3. The community should be aware of the dangers of lava, especially when it rains around Mount Merapi. 4. Mining in the river channel that starts at Mount Merapi in KRB III is recommended to be stopped. 5. Tourism actors are recommended not to carry out activities in areas of potential danger and crater openings as far as 5 km from the top of Mount Merapi. 6. If there is a significant change in activity, then the activity status of Mount Merapi will be reviewed immediately. DATA SOURCE KESDM, Geological Agency, PVMBG Research and Development Center for Geological Disaster Technology (BPPTKG)