Updates on volcanic activity (Smithsonian)
The Smithsonian/USGS Weekly Volcanic Activity Report provides information about global volcanism on a weekly basis. Latest Ubinas report has been published on 28 Jun 2023 10:27.
Instituto Geof?sico del Per? (IGP) reported that a new eruption began at Ubinas on 22 June after three days on increased seismicity. The seismic network recorded a total of 315 volcano-tectonic earthquakes with a maximum magnitude of 1.8 and 281 long-period earthquakes. The eruption began at 0011 on 22 June with a minor ash plume rising 1 km above the crater rim and drifted E based on seismicity and webcams.
During 23-25 June IGP reported a total of 402 volcano-tectonic earthquakes with a maximum magnitude of 1.9 and 865 long-period earthquakes. Sporadic diffuse ash emissions continued during this period that rose as high as 1.5 km above the crater rim. On 23 June the Buenos Aires VAAC reported that diffuse ash plumes were visible in satellite images rising to 6.4 km (21,000 ft) a.s.l., or about 700 m above the summit, and drifting NE and NW. At 1500 they noted that continuous steam emissions occasionally accompanied by diffuse ash puffs were visible in webcam images. On 24 June small diffuse ash puffs were visible in webcam and satellite images rising 6.4-7 km (21,000-23,000 ft) a.s.l., or 700-1,300 m above the summit, and drifting NW. On 25 June continuous gas emissions with sporadic diffuse ash puffs were visible in webcam images, though the ash was too diffuse to be detected in satellite images. IGP noted that no notable deformation nor thermal anomalies were detected. The Alert Level remained at Yellow (the second level on a four-color scale).
Sources: Buenos Aires Volcanic Ash Advisory Center (VAAC) ,Instituto Geof?sico del Per? (IGP)
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