"Chemo the Clown" > wrote in message
...
> Amazing pics!!
> http://www.boston.com/bigpicture/201...llajokull.html

Thanks. I'm amazed by the lightening! What causes lightening in a volcano
eruption?

Cheryl wrote:
>
> "Chemo the Clown" > wrote in message
> ...
> > Amazing pics!!
> > http://www.boston.com/bigpicture/201...llajokull.html
>
> Thanks. I'm amazed by the lightening! What causes lightening in a volcano
> eruption?

http://news.discovery.com/earth/volc...lightning.html

Cheryl wrote:
>
> "Chemo the Clown" > wrote in message
> ...
> > Amazing pics!!
> > http://www.boston.com/bigpicture/201...llajokull.html
>
> Thanks. I'm amazed by the lightening! What causes lightening in a volcano
> eruption?

Here's a fairly decent explanation of part of the reason:
http://www.smithsonianmag.com/scienc...augustine.html

On Sat, 24 Apr 2010 19:40:15 -0400, Cheryl wrote:

> "Chemo the Clown" > wrote in message
> ...
>> Amazing pics!!
>> http://www.boston.com/bigpicture/201...llajokull.html
>
> Thanks. I'm amazed by the lightening! What causes lightening in a volcano
> eruption?

I would suspect it's the hot air mixing with t he cold air, just
like all lightning

-sw

Sqwertz wrote:
>
> On Sat, 24 Apr 2010 19:40:15 -0400, Cheryl wrote:
>
> > "Chemo the Clown" > wrote in message
> > ...
> >> Amazing pics!!
> >> http://www.boston.com/bigpicture/201...llajokull.html
> >
> > Thanks. I'm amazed by the lightening! What causes lightening in a volcano
> > eruption?
>
> I would suspect it's the hot air mixing with t he cold air, just
> like all lightning

I suspect it's charge separation caused by the
movement of charged ash particles. Particles
and even water droplets can transfer charge
and create large voltage gradients.