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Satellite images of Popocatepetl volcano (c)Google Earth View
Satellite images of Popocatepetl volcano (c)Google Earth View
Popocatépetl volcano
Stratovolcano 5426 m / 17,802 ft
Central Mexico, 19.02°N / -98.62°W
Current status: erupting (4 out of 5)
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Popocatépetl volcano eruptions:
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
Typical eruption style:
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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Popocatepetl volcano news & eruption update

Popocatépetl volcano (Central Mexico) activity update: about 1 weak explosion per hour, some weak tremor pulses

Tuesday Aug 28, 2012 10:53 AM | BY: T

SO2 plume from Popocatépetl on 27 Aug 2012 (NOAA)
SO2 plume from Popocatépetl on 27 Aug 2012 (NOAA)
One of the larger emissions of Popo on 27 Aug, with some ash in the eruption cloud
One of the larger emissions of Popo on 27 Aug, with some ash in the eruption cloud
Not much has changed at the volcano. A slight increase in the frequency of small explosions to about 1 or 2 per hour can be noted. Some of the explosions produce not only steam, but some ash, and the more powerful ones eject glowing material falling back into the crater.
The past explosions took place at 11:42 h (local time) on 27 Aug and at 22:33 the evening before.
Weak tremor pulses lasting about 4 hours, and a series of small earthquakes between 19:00 and 19:30 were recorded on 26 Aug.
SO2 emission remains high.
Previous news
SO2 plume from Popocatépetl on 25 Aug 2012 (NOAA)
Sunday, Aug 26, 2012
Activity remains relatively low. About 1 weak steam explosion has been occurring per hour over the past day. Still, the volcano produces a large SO2 plume visible on yesterday's satellite image. [more]
Saturday, Aug 25, 2012
Activity has been low. Only one weak explosion per 2 hours on average were observed and there are no reports of ash emissions. [more]
Friday, Aug 24, 2012
The volcano remains at relatively low levels of activity. During 9 hours, only 7 weak explosions of mostly steam and gas were observed. A steam plume rises about 700 meters above the crater. [more]
Wednesday, Aug 22, 2012
Small explosions occurred at an average rate of 2 per hour yesterday. CENAPRED recorded short pulses of weak volcanic tremor. [more]

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


 

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