Search results
Results From The WOW.Com Content Network
In late May, 2009, activity decreased and the Alaska Volcano Observatory lowered the alert level. A nearly six-month period of relative quiet at the volcano ended on December 27, 2009, with renewed earthquake swarms. The AVO subsequently raised the alert level, and again warned of the possibility of a more vigorous eruption due to dome collapse ...
The Biu Plateau is a highland area in Northeastern Nigeria containing many recently extinct volcanoes. It covers about 5,200 km 2 (2,000 sq mi) and has an average elevation of 700 m (2,300 ft). [1] The plateau lies between the Upper Benue Basin to the south and the Chad Basin to the north.
April 21, 1990 eruption column (to a height of about 5.6 mi (9 km)) [16] from Redoubt Volcano as viewed to the west from the Kenai Peninsula Fumaroles observed on the side of Mount Redoubt on January 31, 2009 Fumarole on March 21, 2009, the day before the eruption A plume of vapor from Mt Redoubt as seen from space on 5 May 2009.
A.D. 79: Mount Vesuvius, Italy. Mount Vesuvius has erupted eight times in the last 17,000 years, most recently in 1944, but the big one was in A.D. 17. One of the most violent eruptions in history ...
La Garita Caldera erupts in the Wheeler Geologic Area, Central Colorado volcanic field, Colorado, USA, eruption several VEI 8 events (Possibly as high as a VEI 9), 5,000 cubic kilometers (1,200 cu mi) of Fish Canyon Tuff was blasted out in a single, major eruption about 27.8 million years ago. [52] [86] [87]
In a volcanic eruption, lava, volcanic bombs, ash, and various gases are expelled from a volcanic vent and fissure. While many eruptions only pose dangers to the immediately surrounding area, Earth 's largest eruptions can have a major regional or even global impact, with some affecting the climate and contributing to mass extinctions .
1883 eruption of Krakatoa: 30,000 Mount Pelée: 4 Martinique: 1902 1902 eruption of Mount Pelée: 23,000 Nevado del Ruiz: 3 Colombia: 1985 Armero tragedy: 20,000~ (estimated) Santorini: 6 Greece: c. 1600 BC Minoan eruption: 15,000 to 20,000 Mount Samalas: 7 Indonesia: 1257 1257 Samalas eruption: 15,000 Mount Unzen: 2 Japan: 1792 1792 Unzen ...
An unknown volcano erupted so explosively in 1831 that it cooled Earth’s climate. Now, nearly 200 years later, scientists have identified the “mystery volcano.”