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Redoubt eruption – seismic signals 23 March 2009

Posted by admin in activity reports, Alaska, eruptions, Redoubt, United States.
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Here are extracts from the four Redoubt seismograph traces made available on the Alaska Volcano Observatory website, showing the signals generated by the eruption that began a few hours ago. The three explosive pulses recorded by the AVO are particularly clear on the REF trace.

RSO station:
Redoubt RSO webicorder trace 22 March 2009 (Alaska Volcano Observatory)

RDN station:
Redoubt RDN webicorder trace 22 March 2009 (Alaska Volcano Observatory)

REF station:
Redoubt REF webicorder trace 22 March 2009 (Alaska Volcano Observatory)

NCT station:
Redoubt NCT webicorder trace 22 March 2009 (Alaska Volcano Observatory)

The latest seismic traces (it’s now 01:40 local time, 09:40 GMT) indicate that activity has quietened down again. UPDATE, 02:01 local time, 10:01 GMT: another sizeable burst of tremor is under way; AVO reports a fourth large explosion beginning 01:39 local time.

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

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

Comments

1. Dan - 23 March 2009

Of course, it had to erupt in the middle of the night and during cloudy weather.

2. Eruption at Redoubt « Volcanista: a magmalicious blog - 23 March 2009

[…] Color Code RED and had four explosions recorded since last night. The Volcanism Blog has reported quite a few of the details during the night. Ashfall from the 50,000 foot plume should start this morning in […]


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