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The eruption column produced by the 1980 eruption of Mount St. Helens as seen from the village of Toledo, Washington, which is 56 km (35 mi) away. The cloud was roughly 64 km (40 mi) wide and 24 km; 79,000 ft (15 mi) high. Eruption columns may become so laden with dense material that they are too heavy to be supported by convection currents.
There are many instances of damage to jet aircraft as a result of an ash encounter. On 24 June 1982, a British Airways Boeing 747-236B flew through the ash cloud from the eruption of Mount Galunggung, Indonesia resulting in the failure of all four engines. The plane descended 24,000 feet (7,300 m) in 16 minutes before the engines restarted ...
Plinian eruption: 1: ash plume; 2: magma conduit; 3: volcanic ash fall; 4: layers of lava and ash; 5: stratum; 6: magma chamber 1822 artist's impression of the eruption of Mount Vesuvius in 79, depicting what the AD 79 eruption may have looked like, by the English geologist George Julius Poulett Scrope.
By RYAN GORMAN Recently released images show the stunning moment lightning bolts shot across a massive ash cloud emanating from an Indonesian volcano. The shock lightning occurred nearly one year ...
The volcano on the remote island of Halmahera erupted at 9.12 a.m. (0012 GMT) for about five minutes, projecting ash into the sky as high as 5 km (3.1 miles), officials said. Indonesia's Mt Ibu ...
The ash cloud from the 1991 eruption of Mount Pinatubo in the Philippines traveled more than 5,000 miles and damaged more than 20 airplanes, USGS reported. The incident in 1989, among others ...
This eruption lasted eight days, from 7–15 June of that year, with an ash cloud that would have required additional days to dissipate, [76] and resulted in worldwide abnormal weather and decrease in global temperature over the next few years. However, the second phase of Eyjafjallajökull's eruption lasted longer than that of Mount Pinatubo.
The Volcanic Ash Advisory Center (VAAC) in Tokyo has warned that “explosive activity” is continuing. The eruption of the Shiveluch volcano reportedly caused by 7.0-magnitude earthquake on the ...