Nevado del Ruiz volcano (Colombia) - Smithsonian / USGS Weekly Volcanic Activity Report for 17 May-23 May 2023 (Continuing Activity)
Wed, 24 May 2023, 14:00 14:00 PM | BY: VNServicio Geológico Colombiano's (SGC) Observatorio Vulcanológico y Sismológico de Manizales reported that the eruption at Nevado del Ruiz continued during 17-23 May and was characterized by periodic gas, steam, and ash emissions, thermal anomalies at the lava dome in Arenas Crater, and elevated seismicity. Seismic signals indicating rock-fracturing events were located 3-8 km around the Arenas Crater at depths of 1-6 km. The largest event, a M 2.1, was recorded at 0341 on 21 May and was located 2 km below the Arenas crater.
Gas-and-ash emissions rose as high as 1.5 km above the crater and drifted multiple directions. A thermal anomaly was observed within the crater on 18 May. The Alert Level was remained at Orange, Level II (the second highest level on a four-level scale).
Source: Servicio Geológico Colombiano (SGC)
From: Global Volcanism Program, 2023. Report on Nevado del Ruiz. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 17 May-23 May 2023. Smithsonian Institution and US Geological Survey.
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