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Wrangell reported activity

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EVENT SPECIFIC INFORMATION

Event Name : Wrangell 2010/11

Start:November 2, 2010 Observed

Meterologic clouds - no eruption: BibCard
Eruption Type:Not an eruption.
Other""

Description: From Neal and others (2014): "No eruptive activity or significant unrest occurred at Wrangell in 2010. However, AVO received an interesting new image of the summit region as well as a report of possible vapor emission from the summit area.

"In May 2010, a single lidar swath over the summit of Wrangell was flown by UAFGI glaciologists Paul Claus and Chris Larsen. The resulting processed image depicts the topography of North Crater, a long-known fumarolic source on the northwestern rim of the ice-filled summit caldera. The characteristic higher northern and lower southeastern rim of the crater is clear in a cross-section of the lidar-derived topography. Within North Crater, there are several secondary depressions including a complex, kidney-bean shaped pit about 20 m (65 ft) deep and 200 m (660 ft) across, located in the center of the crater. This result is broadly consistent with previously recorded surveys of North Crater using photogrammetric techniques (Benson and others, 2007).

"In early November, a long-time resident from the Copper River valley called AVO to report 'more activity at the Mount Wrangell summit than he had ever seen before.' He sent AVO several images of the volcano taken on November 2. The observer reported that when the activity in question began, there had been no weather clouds in the area. He noted about ten 'bursts' from the summit and said this was unusual compared to the typical steady emissions often seen above the volcano. AVO reviewed available seismic and satellite data and, finding no evidence of volcanic signals, concluded that the phenomenon was most likely weather related."

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Page modified: March 30, 2017 14:36
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