Yantarni Volcano
Updated: 23 avril. 2024 14:20 GMT -
Stratovolcano 1345 m / 4,413 ft
United States, Alaska Peninsula, 57.02°N / -157.19°W
Condition actuelle: normal / en sommeil (1 sur 5)
United States, Alaska Peninsula, 57.02°N / -157.19°W
Condition actuelle: normal / en sommeil (1 sur 5)
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Eruptions du volcan Yantarni: 800 BC ± 500 years
Derniers séismes proches
Heure | Mag. / Profondeur | Distance / Lieu | |||
16 avril 02:51 (Anchorage) | 3.0 8.9 km | 29 km au nord-ouest | 43 km SSW of Ugashik, Alaska | Info |
Introduction
Yantarni is a small andesitic stratovolcano located between Aniakchak caldera and Chiginadak volcanoes that was not discovered until 1979. A large breached crater on the NE side, which was formed by collapse of the summit about 2000-3500 years ago, contains a lava dome that marks the volcano's 1345 m high point. This eruption, which resembled that of Mount St. Helens in 1980, began with a debris avalanche produced by the edifice collapse that was accompanied by a possible lateral blast and followed by the emplacement of 1 cu km of pyroclastic flows related to growth of the summit lava dome. No historical eruptions have been documented from Yantarni.---
Smithsonian / GVP volcano information