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Galeras returns to Orange alert 14 June 2009

Posted by admin in activity reports, Colombia, Galeras.
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Mosaic of thermal images of the active cone of Galeras, 11 June 2009 (image copyright INGEOMINAS).

Following last week’s eruptive activity, Galeras volcano in southern Colombia has quietened down again, showing low seismic activity and SO2 emissions, and accordingly the alert level was lowered on 10 June to Orange (‘eruption probable within days or weeks’). This is still a high level of alert, and the Observatorio Vulcanológico y Sismológico de Pasto warns that the volcano’s behaviour remains unstable.

The image above is an INGEOMINAS mosaic of thermal images of the active cone of Galeras, taken on 11 June 2009. The maximum temperatures shown are about 125°C (in the bottom of the crater). The full-size image can be accessed here. This image is copyright INGEOMINAS and is reproduced here for non-commercial purposes in accordance with the terms of use.

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

The Volcanism Blog

Comments

1. Boris Behncke - 14 June 2009

The most prominent source of heat in the thermal image looks like a new lava dome within the crater of Galeras …
I would like to note here that there seems to be a significant explosive eruption going on since Friday 12 June 2009 at Sarychev volcano, in the Kuriles islands. Two impressive satellite images of the ash plume are at the Earth Observatory:
http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=38936
and
http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=38951
This is the first major eruption of Sarychev Peak since 1976 (which was essentially an effusive event) and possibly the largest since a massive explosive event in 1946.

2. volcanism - 14 June 2009

Thanks for the news about Sarychev, Boris – I’ll put up a quick post tonight and perhaps come back in more detail tomorrow.


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