1. eruptions
  2. Llaima vent "blocked with debris"

Llaima vent "blocked with debris"

By eklemetti on April 8, 2009.


Llaima in Chile erupting in 2009.

A quick note to pass along about the ongoing eruption at Llaima in Chile. The eruption did seem to be waning earlier in the week, but the news now is that debris from the eruption is partially blocking the vent. The cone of pyroclastic material (tephra) that has been ejected during the eruption is now overlapping the main crater, potentially blocking part of the vent ... and most people know what happens if you plug up a volcano that is actively erupting - blammo!

The SERNAGEOMIN is not certain that this cone of material (in spanish) will cause a more intense explosion due to pressure building from the blocked vent, but it is a potential event. This eruption has already spread ash over a wide region of Chile and caused the evacuation of people near the volcano. Right now, the SERNAGEOMIN is keeping the volcano on Red Alert (obviously), but we'll have to keep a close eye on how this development changes the eruption over the next few days.

Tags
Andes
Ash fall
Chile
evacuations
explosive eruption
Llaima
speculation
volcanic hazards
volcano monitoring

More like this

How did the victims of the Plinean Eruption of Vesuvius die?
Even at the most extreme edges of the flow of stuff out of the volcano Pompeii, at the far edge of the mud and ash that came from the volcano's explosion, the heat was sufficient to instantly kill everyone, even those inside their homes. And that is how the people at Pompeii, who's remains were…
The Rundown on Mount Rainier
Mount Rainier (14,410 ft) has lately attracted a small amount of attention because of what is considered by some an increase in seismic activity there, so I thought it might be nice to get a baseline description of this volcano for those of you interested in such things. For scientifically…
Deep Sea Evidence of Major Volcanic Eruptions
Pumice is rock that is ejected from a volcano, and has so much gas trapped in it that it can float. So when a pumice-ejecting volcano (not all volcanoes produce pumice) goes off near a body of water, you can get a raft of rock floating around for quite some time. By and by, water replaces the gas…
Iceland - Katla's Dimples and Kakali Rocks
Well, Eyjafjallajökull is bubbling along nicely, there is still some ash coming out, but not high enough to carry as far, and less of it. And the wind is turning, so tomorrow Icelandic airports will close as the ash comes back west across the country. There is also a curiousity on the ice cap above…

Wow. Spectacular picture. I guess it'll be blowing up soon. Will that make a serious global ash cloud? Global warming stopped for a year or two?

The real question in my mind for an eruption of this composition and style would be the volume of volcanic aerosols like sulfur and fluorine erupted.

The volcanic aerosol sulfur will reflect sunlight back out into space. Enough of this and the temperature could drop world wide. Dr. Klemetti, what is it about volcanic aerosol fluorine that concerns you?