The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Popocatepetl is one of Mexico's most active volcanoes. After almost 50 years of dormancy, "Popo" came back to life in 1994 and has since then been producing powerful explosions at irregular intervals.
In the past centuries befor European invasions, large eruptions produced giant mud flows that have buried Atzteque settlements, even entire pyramids.
After a slight increase in activity last week, Popo has been calmer during 27-28 Oct with only about 1 weak explosion per hour, some of which contained small amounts of ash.
Incandescence remains visible at night.
During 25-26 Oct, 70 explosions of low to moderate intensity occurred, several of which produced ash clouds reaching a height between 1.5 and 2 km above the crater. During the night glow was observed and some explosions ejected incandescent bombs to the outer flanks of the crater (see image). [more]
The activity has decreased again. During 22-23 Oct, 39 small explosions, some with weak ash plumes, were recorded. Crater glow is still visible at night, and some small earthquakes continue under the volcano. [more]
85 weak to moderate explosions were recorded in the past 24 hours. Only some of them were accompanied by fine ash emissions. ... [more]
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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