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Popocatépetl volcano (Mexico): activity continues at reduced levels

Чт, 17 июн 2021, 17:43
17:43 PM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: MARTIN
Steam and gas emissions from Popocatépetl volcano this morning (image: CENAPRED)
Steam and gas emissions from Popocatépetl volcano this morning (image: CENAPRED)
Volcanic tremor values continue at deeply reduced levels since 3 June (image: CENAPRED)
Volcanic tremor values continue at deeply reduced levels since 3 June (image: CENAPRED)
The activity of the volcano continues at generally decreased levels over the past two weeks.
Sporadic emissions of steam and gases (52 tonnes on today) continue at the summit vent that rose to estimated 6 km altitude and drifted NW. No explosive eruption was detected during this period.
Daily volcanic tremor has rapidly decreased to average 50 min / day during the past 2 weeks and remains deeply under the average-than-usual levels (approx. 1000 min / day) confirming that the activity of the volcano continues at reduced levels.
Source: Centro Nacional de Prevención de Desastres volcano activity update 17 June 2021

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Background:

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.


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Source: GVP, Smithsonian Institution - Popocatepetl information


Satellite images of Popocatepetl volcano (c)Google Earth View
Satellite images of Popocatepetl volcano (c)Google Earth View
Popocatépetl вулкан
Стратовулкан 5426 m / 17,802 ft
Central Mexico, 19.02°N / -98.62°W
Текущее состояние: извергающийся (4 из 5) Popocatépetl Вулкан-извержения:
1345-47, 1354, 1363(?), 1488, 1504, 1509(?), 1512, 1518, 1519-23(?), 1528, 1530, 1539-40, 1542, 1548, 1571, 1580, 1590, 1592-94, 1642, 1663-65, 1666-67, 1697, 1720, 1802-04, 1827(?), 1834(?), 1852(?), 1919-22, 1923-24, 1925-27(?), 1933, 1942-43, 1947, 1994-95, 1996-2003, 2004-ongoing
Типичный извержения стиль
Dominantly explosive, construction of lava domes. Plinian eruptions at intervals of several centuries or few thousands of years, vulcanian and strombolian activity in intermittent phases.

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