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Diaporama
Location of Vaniaminof volcano. (Image courtesy Chris Nye, Alaska Volcano Observatory / Alaska Division of Geological & Geophysical Surveys)
Location of Vaniaminof volcano. (Image courtesy Chris Nye, Alaska Volcano Observatory / Alaska Division of Geological & Geophysical Surveys)

Actualités
Saturday, Jan 05, 2019
The Alaska Volcano Observatory (AVO) lowered the alert status of the volcano to YELLOW. "Eruptive activity at Veniaminof has paused or stopped over the past week. ... Seismic events continue, indicative of continued unrest.", AVO wrote earlier today. [details]
Sunday, Dec 23, 2018
Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: ... [details]
 

Veniaminof volcan

Stratovolcano 2507 m / 8,225 ft
Alaska Peninsula, USA, 56.17°N / -159.38°W
Condition actuelle: en vigilance - niveau agité (2 sur 5)
Veniaminof webcams / données en temps réel | Reports
Veniaminof livres
Last update: 5 Jan 2019
Style éruptif tipique: Explosive
Eruptions du volcan Veniaminof: 1750 (?), 1830-38(?), 1838-39, 1874, 1892, 1930, 1939, 1939, 1944, 1956, 1983-84, 1984, 1987, 1993-94, 1995(?), 2002, 2004, 2006 (March)ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) satellite image showing a steam plume emitting from the active intracaldera cone at Veniaminof Volcano on March 4, 2008 at 12:57 PM AKS (image processed by AVO/USGS, Image data courtesy of NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team)
HeureMag. / DepthDistanceLocation
Fri, 4 Jan 2019
Fri, 4 Jan 02:27 UTCM 2.7 / 133.5 km24 km- 27km NW of Chignik Lake, Alaska
Mon, 24 Dec 2018
Mon, 24 Dec 08:29 UTCM 2.5 / 59.8 km53 km- 43km S of Chignik Lake, Alaska
Veniaminof is one of the highest, largest and most active volcanoes on the Alaska Peninsula.

Introduction:

The massive cone of the stratovolcano is truncated by a steep-walled, 8 x 11 km, glacier-filled caldera that formed around 3700 years ago. The caldera rim is up to 520 m high on the north, is deeply notched on the west by Cone Glacier, and is covered by an ice sheet on the south. Post-caldera vents are located along a NW-SE zone bisecting the caldera that extends 55 km from near the Bering Sea coast, across the caldera, and down the Pacific flank.

Historical eruptions probably all originated from the westernmost and most prominent of two intra-caldera cones, which reaches an elevation of 2156 m and rises about 300 m above the surrounding icefield. The other cone is larger, and has a summit crater or caldera that may reach 2.5 km in diameter, but is more subdued and barely rises above the glacier surface.

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Source: GVP (Smithsonian Institution)


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