vendredi, avril 07, 2006
A pilot reported a minor eruption at Veniaminof volcano producing an ash plume of about 10,000 ft on Thursday April 6, 2006.[details]
mardi, mars 07, 2006
Seismicity at Veniaminof volcano is low and there are no indications that new eruptions have taken place since 3 March 2006. As precaution, the Alaska Volcano Observatory maintains alert level YELLOW.[details]
Veniaminof volcanVeniaminof 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.
Source: GVP (Smithsonian Institution)
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