Chiginagak volcan

Stratovolcano 2221 m / 7,287 ft

Condition actuelle: normal / en sommeil (1 sur 5)

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Style éruptif tipique: unspecified
Eruptions du volcan Chiginagak: 1998 

HeureMag. / ProfondeurDistance/Lieu
mardi, 26. octobre 2021 13:40 GMT (1 séisme)
26 oct. 2021 05:40 (GMT -8) (26. oct. 2021 13:40 GMT)
2.7

99 km		48 km (30 mi)
Arrondissement de Lake and Peninsula Parish, 251 km au nord-est de Sandpoint, Arrondissement d'Aleutians East, Alaska, États-Unis
lundi, 25. octobre 2021 17:39 GMT (1 séisme)
25 oct. 2021 09:39 (GMT -8) (25. oct. 2021 17:39 GMT)
3.1

91 km		37 km (23 mi)
Gulf of Alaska, 251 km à l'ouest de Kodiak, Alaska, États-Unis
mardi, 19. octobre 2021 02:30 GMT (1 séisme)
18 oct. 2021 18:30 (GMT -8) (19. oct. 2021 02:30 GMT)
2.1

58 km		47 km (29 mi)
66 Km ESE of Ugashik, Alaska
samedi, 16. octobre 2021 13:35 GMT (1 séisme)
16 oct. 2021 05:35 (GMT -8) (16. oct. 2021 13:35 GMT)
1.5

10.9 km		44 km (27 mi)
71 Km ESE of Ugashik, Alaska

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.
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Smithsonian / GVP volcano information


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