![]() ![]() A webcam image during the night of 16 July showed incandescence at the vent (figure 131). Several eruptive events were detected during 16-18 July that rose 1-2.5 km above the summit and drifted NE, S, SW, and W. Nighttime crater incandescence was visible during 2-5 July. A discrete eruption was observed in satellite imagery, with an ash plume that rose to 900 m altitude and drifted W on 1 July. Similar activity with intermittent eruptive events continued during July white gas-and-steam emissions rose 25-100 m above the summit and drifted in different directions, though the summit was often obscured by weather clouds. Another event occurred at 1817 on 30 June that generated an ash plume that rose as high as 1 km above the summit and drifted slowly NE. Eruptive events at 1712 on 25 June and at 0209 on 29 June produced ash plumes that rose 400 m and 2,000 m above the summit and slowly drifted SW and N, respectively. Webcam images showed that incandescent ejecta accompanied these eruptive events. Ground reporters recorded several eruptive events during 15-17 June that generated dense gray-to-black plumes that rose 300-700 m above the summit and drifted N, SW, W, and S. A faint plume observed in satellite imagery during 11-12 June that rose to 1.5 km altitude and drifted W, according to Darwin VAAC notices. Incandescence was visible above the summit during the night of 8 June. According to VONAs (Volcano Observatory Notice for Aviation) from MAGMA Indonesia, eruptive events at 1159, 1305, and 2359 on 8 June generated ash plumes that rose 500 m above the summit and drifted SW and S. White gas-and-steam emissions during June rose 25-400 m above the summit and drifted in various directions. A dense gas-and-steam plume with some amount of ash rose to 2.4 km altitude and drifted NE, N, NW, W, and WNW during 14-16 and 18-19 May. On 13 May satellite images showed a narrow ash plume that rose to 2.4 km altitude and drifted SE and E. According to the Darwin VAAC, continuous gas-and-ash emissions were reported during 5 and 8-20 May rising to 2.4 km altitude and drifting in various directions, based on satellite images and weather models. On 2 May incandescent lava flows in and around the crater that advanced into the sea. This report updates similar activity during May through October 2022 using information provided by the Indonesian Center for Volcanology and Geological Hazard Mitigation, referred to as Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG), MAGMA Indonesia, the Darwin Volcanic Ash Advisory Center (VAAC), and several sources of satellite data.Īctivity during May was relatively low and consisted of white gas-and-steam emissions that rose 25-200 m above the summit and drifted in different directions. The current eruption period began in May 2021 and has more recently consisted of explosions, gas-and-ash plumes, and thermal activity (BGVN 47:05). ![]() Intermittent ash-bearing explosions from the sea-level crater since May 2021 have contributed to the growth of a new pyroclastic cone to about 150 m elevation. ![]() Anak Krakatau (Child of Krakatau), constructed beginning in late 1927 (BGVN 44:03, figure 56), was the site of over 40 smaller eruptions until 22 December 2018 when a large explosion destroyed most of the 338 m above sea level edifice and generated a deadly tsunami (BGVN 44:03). A new island grew that was then destroyed in the 1883 caldera-forming eruption. Krakatau volcano in the Sunda Strait between Java and Sumatra, Indonesia, had a major caldera collapse around 535 CE this event formed a 7-km-wide caldera ringed by the three islands of Verlaten, Lang, and Rakata. Explosions, ash plumes, and thermal activity during May-October 2022 ![]()
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