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Redoubt update, 13 February 2009 13 February 2009

Posted by admin in activity reports, Alaska, natural hazards, Redoubt, United States, volcano monitoring.
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No eruption at Mount Redoubt, and no significant changes in the volcano’s behaviour have been reported. The latest bulletin at the Alaska Volcano Observatory Redoubt page reads:

2009-02-12 21:30:34

Redoubt Volcano has not erupted. Elevated seismicity is continuing, dominated by ongoing volcanic tremor and occasional small earthquakes. The webcams are dark for the night.

Also on the AVO website are some photographs from the 7 February overflight, including some with helpful annotations.

Photograph taken during the overflight to Redoubt on 7 February 2009. Image taken looking southwest at the fumaroles on the north flank of Redoubt. (Photographer Heather Bleick, AVO/USGS image.)
Above: Photograph taken during the overflight to Redoubt on 7 February 2009. Image taken looking southwest at the fumaroles on the north flank of Redoubt. (Photographer Heather Bleick, AVO/USGS image.)

Index of major features on the upper Drift Valley Glacier, 7 February 2009. (Photographer Heather Bleick, AVO/USGS image.)
Above: Index of major features on the upper Drift Valley Glacier, north flank of Redoubt Volcano. Photograph was taken on 7 February 2009 looking towards the south/southwest. Features are listed by year of dome or by elevation of the feature in feet. (Photographer Heather Bleick, AVO/USGS image.)

In the news, there’s an interesting post at Alaskan political blog The Mudflats (and cross-posted to The Huffington Post) on the issue of the Drift River Oil Terminal and its location on the flood plain of the river valley which will be the route of choice for Redoubt’s lahars, should the volcano erupt. The writer’s concern is the lack of available public information on the terminal (e.g., how much oil is in there?) that would enable local communities to be better informed about the hazard it potentially represents.

The Peninsula Clarion has an interview with AVO geophysicist Peter Cervelli, who talks about what form an eruption of Mount Redoubt may take, if and when it happens. ‘There’s very strong evidence that there’s new magma underneath the mountain but nothing has reached the surface yet’, says Cervelli, who summarizes the various things that might happen upon that magma reaching the surface: an explosive eruption, or long or short periods of dome-building with subsequent collapse (or not).

For all our Redoubt coverage: Redoubt « The Volcanism Blog.

News
Big bang theory – Redoubt eruption could be dramatic — or notPeninsula Clarion, 12 February 2009
Alaska’s Redoubt Volcano still rumblingFairbanks Daily News-Miner, 12 February 2009

Information
Global Volcanism Program: Redoubt – summary information for Redoubt (1103-03-)
Alaska Volcano Observatory – Redoubt – AVO information and updates for Redoubt
Alaska Volcano Observatory – main page for the AVO

The Volcanism Blog