Augustine Volcano
Updated: 19 avril. 2024 11:56 GMT -
Stratovolcano 1260 m / 4134 ft
Cook Inlet (SW Alaska), 59.36°N / -153.43°W
Condition actuelle: normal / en sommeil (1 sur 5)
Cook Inlet (SW Alaska), 59.36°N / -153.43°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 10 déc. 2021
Augustine volcano (image: Peter Kelly, AVO/USGS)
Augustine is the most active volcano of the eastern Aleutian arc. It consists of several overlapping lava domes that frequently produce explosive eruptions and are notorious for collapsing, producing glowing avalanches (block and ash flows).
Augustine volcano had a devastating eruption 1883 when large parts of the summit dome complex collapsed. In the following century, several eruptions associated with dome growth have restored the volcano's height again. Historical eruptions after that date were typically explosive, producing pyroclastic pumice flows and block-and-ash flows, followed by regrowth of the lava domes.
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Eruptions du volcan Augustine: 2005-06, 1986, 1976, 1971, 1963, 1935, 1908(?), 1883-84(?), 1812
Derniers séismes proches
| Heure | Mag. / Profondeur | Distance / Lieu | |||
| 15 avril 18:03 (Anchorage) | 2.0 109 km | 21 km au nord |  51 km ESE of Pedro Bay, Alaska | Info | |
| samedi, 13 avril 2024 GMT (1 séisme) | |||||
| 13 avril 02:43 (Anchorage) | 2.2 241 km | 8.7 km au sud | 115 km à l'ouest de Gomer, Kenai Peninsula, Alaska, États-Unis | Info | |
| samedi, 6 avril 2024 GMT (1 séisme) | |||||
| 6 avril 02:51 (GMT -8) | 2.5 79 km | 29 km à l'est | 56 km W of Nanwalek, Alaska | Info | |
| vendredi, 5 avril 2024 GMT (1 séisme) | |||||
| 5 avril 08:56 (GMT -8) | 2.2 99 km | 23 km au nord-est | 66 km W of Nanwalek, Alaska | Info | |
| jeudi, 11 avril 2024 GMT (1 séisme) | |||||
| 10 avril 19:08 (Anchorage) | 1.7 128 km | 17 km au nord-ouest | 43 km SE of Pedro Bay, Alaska | Info | |
| mardi, 16 avril 2024 GMT (1 séisme) | |||||
| 16 avril 01:00 (GMT -8) | 1.6 75 km | 23 km à l'est | 63 km W of Nanwalek, Alaska | Info | |
Introduction
The oldest exposed rocks on the flanks of Augustine are little more than 40,000 years old. At least 11 large debris avalanches have reached the sea during the past 1800-2000 years, and five major pumiceous tephras have been erupted during this interval.Latest satellite images
