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Post Info TOPIC: Mount Pinatubo


L

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RE: Mount Pinatubo
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Mount Pinatubo's ultra-Plinian eruption on the 7th June 1991 produced the second largest terrestrial eruption of the 20th century (after the 1912 eruption of Novarupta) and the largest eruption in living memory.
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Twenty years ago, it was a mass of sad-faced and grief-stricken citizens of Bacolor that would have made the long walk to leave their homes and property to get to the refuge of resettlement areas after the eruption of Mt. Pinatubo.
Twenty years later, the exodus was replaced by a throng of happy faces, a crowd wearing green shirts walking the old streets of the town as early as 5 a.m. to hail the triumph of the Kapampangan spirit, its victory over the eruption and a sort of thanksgiving for the lives saved and in honour of the sacrifices and lives lost.

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Mt. Pinatubo Explosion Clark Air Base Philippines



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Mount Pinatubo's ultra-Plinian eruption on the 7th June 1991 produced the second largest terrestrial eruption of the 20th century (after the 1912 eruption of Novarupta) and the largest eruption in living memory. The colossal 1991 eruption had a Volcanic Explosivity Index (VEI) of 6, and came some 450-500 years after the volcano's last known eruptive activity (estimated as VEI 5, the level of the 1980 eruption of Mount St. Helens), and some 1000 years after previous VEI 6 eruptive activity.
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L

Posts: 131433
Date:
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Mount Pinatubo's ultra-Plinian eruption on the 7th June 1991 produced the second largest terrestrial eruption of the 20th century (after the 1912 eruption of Novarupta) and the largest eruption in living memory. The colossal 1991 eruption had a Volcanic Explosivity Index (VEI) of 6, and came some 450-500 years after the volcano's last known eruptive activity (estimated as VEI 5, the level of the 1980 eruption of Mount St. Helens), and some 1000 years after previous VEI 6 eruptive activity.

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Rickety old jeeps barrel through a dry northern Philippines riverbed, setting off a dust storm that coats the visitors bouncing around on the back seat.
The landscape around Mount Pinatubo is evolving again 16 years after a gigantic volcanic eruption killed more than 1,500 people and sent a cloud of ash into the atmosphere cooling world temperatures for years.
The fine sand deposited by the 1991 eruption over the surrounding countryside is being kicked up by sport utilities driven by adventure tourists coming to swim or ride kayaks on Pinatubo's large, mildly acidic crater lake.

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This image of Mt. Pinatubo was taken by the Advanced Land Observing Satellite (ALOS) Daichi in November 2006. The figure looks dark green for the most part, indicating that the area is covered with forest or jungle. There is a large lake 2km in diameter within the crater on Mt. Pinatubo. The east side of the lake is covered with volcanic ash and looks ashy purple. Huge amounts of ashy-purple-looking volcanic ash still remain in the basins of the O'Donnell River on the north side, the Balin Baquero River on the west side, and the Santo Thomas River on the southwest side of Mt. Pinatubo.

Pinatubo_1
Expand (110kb, 560 x 400)

Latitude 15.13 Longitude 120.35

Mt. Pinatubo, which once rose 1,745m above sea level, is located approximately 90km northwest of Manila, the capital of the Philippines, on central Luzon. A major eruption in June 1991 blew away the top causing the summit to fall as much as 260m, and a 2.5km diameter crater and lake emerge.
On June 15, during the largest eruption in the 20th century, volcanic fumes reached the stratosphere, cooling the climate of the Northern hemisphere by 0.5 to 0.6C.

Source JAXA

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