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Santa Maria volcano (Guatemala) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 August-24 August 2021 (Continuing Activity)

Ср, 18 авг 2021, 06:00
06:00 AM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: VN
INSIVUMEH reported that daily ash plumes from Santa Maria's Santiaguito lava-dome complex during 18-25 August rose to 2.8-3.5 km (9,200-11,500 ft) a.s.l. and drifted as far as 8 km W and SW. Ashfall was reported in San Marcos (8 km SW), Loma Linda Palajunoj (6 km WSW), and surrounding farms on 24 August.
An active lava flow 600 m long extended down the W and S flanks of the dome during 18-24 August. Collapses of blocky lava from the Caliente dome generated block-and-ash avalanches down the W, S, and SW flanks, often reaching the base and causing minor ashfall on the flanks. Weak explosions accompanied these avalanches on 21 August and generated abundant gas-and-steam emissions.
Nighttime incandescence was often observed from the lava flow and dome.

Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
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From: Global Volcanism Program, 2021. Report on Santa Maria. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 18 August-24 August 2021. Smithsonian Institution and US Geological Survey.

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