sexta-feira, 1 de junho de 2012

a\s píores erupções vulcânicas

Largest Explosive Eruptions Since 1400 AD VEI Greater Than or Equal to 5 Largest Explosive Eruptions Since 1400 AD Volcano Country Date VEI Type of Volcano Aniakchak USA-AK 1450C 5? Caldera Kuwae Vanuatu, SW Pac. 1452 6 Caldera Sakurajima Japan 1471 5? Stratovolcano Bardarbunga Iceland 1477 5? Stratovolcano St. Helens USA-WA 1480D 5+ Stratovolcano St Helens USA-WA 1482D 5 Stratovolcano St. Helens USA-WA 1540 5 Stratovolcano Billy Mitchell Bougainville, SW Pac 1580C 6 Ash shield Kelut Indonesia-Java 1586 5? Stratovolcano Raung Indonesia-Java 1593 5? Stratovolcano Huaynaputina Peru 1600 6? Explosion crater? Kamaga-Take Japan 1640 5 Stratovolcano Parker Philippines Jan. 4, 1641 6 Stratovolcano Long Island New Guinea 1660 6 Complex volcano Usu Japan Aug. 16,1663 5 Stratovolcano Tarumai Japan Aug. 6, 1667 5 Stratovolcano Gamkonora Indonesia-Halmahara 1673 5? Stratovolcano Tongkoko Indonesia-Sulawesi 1680 5? Stratovolcano Tarumai Japan Aug., 1739 5 Stratovolcano Katla Iceland Oct. 17, 1755 5 Subglacial Tambora Indonesia April 5, 1815 7 Stratovolcano Galunggung Indonesia Oct. 8, 1822 5? Stratovolcano Cosiguina Nicaragua June 20, 1835 5 Stratovolcano Sheveluch Russia Feb. 17, 1854 5 Stratovolcano Askja Iceland March 29, 1875 5 Stratovolcano Krakatau Indonesia Aug. 26, 1883 6 Caldera Tarawera New Zealand June 10, 1886 5 Fissure on lava dome Santa Maria Guatemala Oct., 24, 1902 6 Stratovolcano Ksudach Russia March 28, 1907 5 Shield Katmai USA June 6, 1911 6 Stratovolcano Cerro Azul Chile April 10, 1932 5 Stratovolcano Bezymianny Russia March 30, 1956 5 Stratovolcano St. Helens USA 18-May-80 5 Stratovolcano Modified from Table 3 in Newhall, CG, and S Self, 1982, The volcanic explosivity index (VEI): An estimate of explosive magnitude for historical volcanism: Journal of Geophysical Research87, 1231-1238. Additional eruptions added from tree ring data reported in Table 2 of Briffa, KR, PD Jones, FH Schweingruber & TJ Osborn, 1998, Influence of volcanic eruptions on Northern hemisphere summer temperature over the past 600 years: Nature 393, 450-455. Note that other large eruptions occurred during the last 600 years, according to tree ring and ice core data, but are not indicated here because the source volcano is unknown (e.g. 1809). copyright autor do texto

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