Pacaya volcano (Guatemala): small paroxysm indeed with pulsating lava fountains
Wed, 3 Mar 2021, 09:0109:01 AM | BY: MARTIN
Lava fountaining at Pacaya volcano generated dense dark ash plume (image: INSIVUMEH)
The lava flow on S-SW flank generated a small avalanche that lifted ash plumes as it descended the slope (image: INSIVUMEH)
The effusive-explosive activity at the volcano has been increasing during the past few weeks characterized by strong ash emissions and sporadic series of small paroxysm with pulsating lava fountains.
Elevated tremor during the past days including sharp peak on 1 March (image: INSIVUMEH)
On 21 Febraury a small-to-moderate intermittent lava-fountaining eruptive episode (likely to be classified as paroxysm) occurred at the volcano's Mackenney summit crater (as can be seen in the video below) as a result of continuing elevated strombolian activity
The explosions continue to generate glowing lava bombs ejected to an approximate height of 300 to 500 meters above the crater. The regular constant ash emissions reached up to 11,100 ft-13,129 ft(3,400 m-4,000 m) altitude and extended about 10 to 25 km to the S-SW of the volcano.
The eruptive fissure, opened on the south-southwestern flank at about 300 m distance from the summit, remains active and continues to emit the lava flow, currently about 1,100 m long. The lava effusion generated a small avalanches that lifted ash plumes (so-called phoenix clouds) as it descended the slope. In addition, near-constant glow from the summit crater is associated with this activity.
Seismicity is characterized by near-constant periods of high amplitude tremor including sharp peak on 1 March as a rising magma at shallow level pushed its way up to the surface.
Source: Instituto Nacional de Sismología, Vulcanología, Meteorología e Hidrología volcano activity update 3 March 2021
Impresionante el Volcán de Pacaya esta tarde: pic.twitter.com/qDhJdwnDnX— Víctor Bolaños (@vichoguate) February 21, 2021
Sun, 28 Feb 2021, 19:00
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