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Actualitésjeudi, janv. 01, 1970
L'AVO a élevé le niveau de danger pour le code couleur jaune, en raison de la sismicité accrue. Une éruption dans un proche avenir est possible.
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jeudi, août 21, 2008
AVO reported that on 13 August low-level steam-and-ash plumes from Okmok were visible on satellite imagery drifting SE at altitudes of 3-4.6 km (10,000-15,000 ft) a.s.l. During 14-17 August satellite observations were hindered due to cloud cover; seismic levels fluctuated possibly indicating that steam-and-ash emissions continued. During 18-19 August, ash plumes were seen on satellite imagery at altitudes of 3-4.6 km (5,000-15,000 ft) a.s.l. The Volcano Alert Level remained at Watch and the Aviation Color Code at Orange.
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Okmok volcan éruptionsCentral shield complex with nested caldera 1073 m (3520 ft)
Îles Aléoutiennes, Alaska & Aleutians, 53.4°N / -168.17°W Liste des éruptions: 1817, 1824, 1878(?), 1899, 1931, 1935, 1936, 1938, 1943, 1945, 1958, 1960, 1981, 1983, 1986, 1997, 2008 |
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