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Tephra fell as far as 1,000 km (620 mi) from the volcano. Sakurajima is a modern active vent of the same Aira caldera volcano. Sakurajima was formed by later activity within the caldera, beginning about 13,000 years ago. [9] It is about 8 km (5 mi) south of the centre of the caldera. Its first eruption in recorded history was in 963 AD. [10]
Augustine Volcano (Alaska) during its eruptive phase on January 24, 2006. A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
Mount Usu (有珠山, Usu-zan [3]) is an active stratovolcano in the Shikotsu-Tōya National Park, Hokkaido, Japan.It has erupted four times since 1900: in 1910 (which created Meiji-shinzan [4]), 1944–45 (which created Shōwa-shinzan), August 7, 1977, [5] and on March 31, 2000.
The dashed trajectories are the result of lava pieces with a bright hot side and a cool dark side rotating in mid-air. Volcanology (also spelled vulcanology ) is the study of volcanoes , lava , magma and related geological , geophysical and geochemical phenomena ( volcanism ).
Aira caldera is one of the most active and hazardous calderas in the world. It is home to the Kirishima volcanoes, a group of active volcanoes at the north end of Aira caldera. One of these volcanoes, Shinmoedake, has produced two strong magmato-phreatic eruptions, separated by almost 300 years. Starting in December 2009, active diving and ...
Víti geothermal lake at Askja Askja and Víti (in the foreground). Askja (ⓘ) is an active volcano situated in a remote part of the central highlands of Iceland.The name Askja refers to a complex of nested calderas within the surrounding Dyngjufjöll [ˈtiɲcʏˌfjœtl̥] mountains, which rise to 1,514 m (4,967 ft), askja meaning box or caldera in Icelandic.
Mount Schank is a 100 m (330 ft) high dormant volcano in the southeast corner of South Australia, near Mount Gambier.It was sighted by James Grant on 3 December 1800 and named after Admiral John Schank, designer of Grant's ship, HMS Lady Nelson.
Mount Yasur is a volcano on Tanna Island, Vanuatu, 361 m (1,184 ft) high above sea level, [2] on the coast near Sulphur Bay, northeast of the taller Mount Tukosmera, which was active in the Pleistocene. It has a largely unvegetated pyroclastic cone with a nearly circular summit crater 400 m in diameter. [1]