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Popocatépetl volcano (Mexico): sporadic strong explosions

Di, 7. Sep 2021, 03:42
03:42 AM | VON: MARTIN
Explosive eruption at Popocatépetl volcano on 4 September (image: CENAPRED)
Explosive eruption at Popocatépetl volcano on 4 September (image: CENAPRED)
Dense ash column from Popocatépetl volcano today (image: CENAPRED)
Dense ash column from Popocatépetl volcano today (image: CENAPRED)
The explosive eruption of the volcano continues at moderate levels.
CENAPRED's surveillance cameras observed a few moderate-to-strong vulcanian explosions during the past two days.
On 4 September at about 13:00 local time, a dense dark ash plume reached approx. 20,000 ft (6,100 m) altitude and drifted NW. Another eruption occurred today at 08:22 local time as the volcano sent ash column to 19,000 ft (5,800 m) height.
The seismic network recorded 466 minutes of low amplitude internal tremor associated with near-constant vulcanian explosions
98 emissions of water vapor and gases were detected.
The warning bulletin states that ballistic impacts of volcanic bombs and pyroclastic flows could affect an area of about 12 km distance from the main crater.
Source: Centro Nacional de Prevención de Desastres volcano activity update 6 September 2021

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Volcán Popocatépetl, whose name is the Aztec word for smoking mountain, towers to 5426 m 70 km SE of Mexico City to form North America's 2nd-highest volcano.  The glacier-clad stratovolcano contains a steep-walled, 250-450 m deep crater.  The generally symmetrical volcano is modified by the sharp-peaked Ventorrillo on the NW, a remnant of an earlier volcano. 
At least three previous major cones were destroyed by gravitational failure during the Pleistocene, producing massive debris-avalanche deposits covering broad areas south of the volcano.  The modern volcano was constructed to the south of the late-Pleistocene to Holocene El Fraile cone.  Three major plinian eruptions, the most recent of which took place about 800 AD, have occurred from Popocatépetl since the mid Holocene, accompanied by pyroclastic flows and voluminous lahars that swept basins below the volcano.  Frequent historical eruptions, first recorded in Aztec codices, have occurred since precolumbian time.


Source: GVP, Smithsonian Institution - Popocatepetl information

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