Chiginagak volcan
Mise à jour: 9 févr.. 2023 12:25 GMT -
Stratovolcano 2221 m / 7,287 ft
United States, Alaska Peninsula, 57.14°N / -156.99°W
Condition actuelle: normal / en sommeil (1 sur 5)
United States, Alaska Peninsula, 57.14°N / -156.99°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 13 déc. 2021 (Smithsonian / USGS Weekly Volcanic Activity Report)
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Eruptions du volcan Chiginagak: 1998
Derniers séismes proches
| Heure | Mag. / Profondeur | Distance/Lieu | ||
| lundi, 6 février 2023 GMT (1 séisme) | ||||
| 6 févr. 2023 09:22 (GMT -9) (6 févr.. 2023 18:22 GMT) | 2.2 98 km | 18 km (11 mi) 84 km à l'est de Port Heiden, Arrondissement de Lake and Peninsula, Alaska, États-Unis | ||
| samedi, 28 janvier 2023 GMT (2 séismes) | ||||
| 28 janv. 2023 12:02 (GMT -9) (28 janv.. 2023 21:02 GMT) | 2.1 3.6 km | 25 km (16 mi) 46 km au sud de Ugashik, Arrondissement de Lake and Peninsula, Alaska, États-Unis | ||
| 28 janv. 2023 00:39 (GMT -9) (28 janv.. 2023 09:39 GMT) | 2.6 4.4 km | 25 km (16 mi) 78 km à l'est de Port Heiden, Arrondissement de Lake and Peninsula, Alaska, États-Unis | ||
Introduction
The symmetrical, calc-alkaline Chiginagak stratovolcano located about 15 km NW of Chiginagak Bay contains a small summit crater, which is breached to the south, and one or more summit lava domes. Satellitic lava domes occur high on the NW and SE flanks of the glacier-mantled volcano. An unglaciated lava flow and an overlying pyroclastic-flow deposit extending east from the summit are the most recent products of Chiginagak. They most likely originated from a lava dome at 1687 m on the SE flank, 1 km from the summit of the volcano, which has variably been estimated to be from 2075 to 2221 m high. Brief ash eruptions were reported in July 1971 and August 1998. Fumarolic activity occurs at 1600 m elevation on the NE flank of the volcano, and two areas of hot-spring travertine deposition are located at the NW base of the volcano near Volcano Creek.---
Smithsonian / GVP volcano information
See also: Sentinel hub | Landsat 8 | NASA FIRMS
