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Zufallsfotos
Satellite images of Popocatepetl volcano (c)Google Earth View
Satellite images of Popocatepetl volcano (c)Google Earth View
Popocatépetl Vulkan
Stratovolcano 5426 m / 17,802 ft
Central Mexico, 19.02°N / -98.62°W
Aktueller Status: Ausbruch (4 von 5)
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Ausbrüche des Popocatépetl:
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
Typische Aktivität:
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: weak explosions (about 1 per hour), crater glow

Freitag Aug 31, 2012 12:05 | VON: T

Popo with glow from the summit seen early on 31 Aug (CENAPRED)
Popo with glow from the summit seen early on 31 Aug (CENAPRED)
Weak steam explosions occur at frequencies of about 1 per hour. The largest reach 1 km height and contain small amounts of ash, such as at 22:03 on 29 Aug, 00:57 and 02:38 local time on 30 Aug. Glow from the crater is visible at night suggesting that the lava dome is continuing to grow slowly. CENAPRED also registered 3 small volcano-tectonic quakes at 19:51, 19:58 local time on 29 Aug and 10:37 on 30 Aug.
Vorherige Nachrichten
Bluish gas emission from Popo on 29 Aug
Mittwoch, Aug 29, 2012
A slight increase in activity can be noted since yesterday. There is about 1 weak steam explosion per hour, with an increase in frequency last evening. Some of the explosions produce small amounts of ash and plumes up to 1.5 km high, such as one at 03:56 early yesterday. Glowing material can be seen ejected during such events at night. ... [mehr]
SO2 plume from Popocatépetl on 27 Aug 2012 (NOAA)
Dienstag, Aug 28, 2012
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. ... [mehr]
SO2 plume from Popocatépetl on 25 Aug 2012 (NOAA)
Sonntag, 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. [mehr]
Samstag, 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. [mehr]
Freitag, 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. [mehr]

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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