On 9 March the Darwin VAAC reported an ash plume rose to 6 km altitude and drifted NNW, based on ground observations from CVGHM it was not visible in satellite imagery due to cloud cover. On 9 March, five pyroclastic flows traveled as far as 5 km down the SE flank at 2318, 2329, 2338, 2344, and 2353. On 7 March a pyroclastic flow was reported descending 2 km on the SW flank, accompanied by 15 incandescent avalanches of material that descended 1.8 km on the SW flank. ![]() Shallow volcanic earthquakes were also detected throughout the month. ![]() Additional information comes from the Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as Indonesian Center for Volcanology and Geological Hazard Mitigation, CVGHM), MAGMA Indonesia, the Darwin Volcanic Ash Advisory Centre (VAAC), and various satellite data.īPPTKG reported that during March near-daily white gas-and-steam emissions were observed 10-400 m above the summit and as many as 38 daily incandescent avalanches of material descended 1.8-2 km to the SW/W and occasionally 1-2.5 km to the SE (table 23). This report covers activity comprising avalanches and pyroclastic flows during March through September 2022 using information primarily from Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG), the Center for Research and Development of Geological Disaster Technology, a branch of PVMBG which specifically monitors Merapi. The current eruption period began in late December 2020 and has more recently consisted of dome growth, pyroclastic flows, avalanches, and ash emissions (BGVN 47:03). Pyroclastic flows and lahars accompanying growth and collapse of the steep-sided active summit lava dome have occurred on the western-to-southern flanks, causing many fatalities within the last 20 years. Merapi is located just north of the major city of Yogyakarta in central Java, Indonesia. Frequent avalanches, crater incandescence, and occasional pyroclastic flows
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