Main Page | Report this Page
 
   
Science Forum Index  »  Geology Forum  »  Can Chaiten eruption affect Puerto Aysen's...
Page 1 of 1    
Author Message
Belba Grubb...
Posted: Sun May 04, 2008 9:55 pm
Guest
Just wondering. A little over a year ago there was that 6.2 earthquake
in Puerto Aysen that caused a landslide and resultant deadly tsunami
in the harbor, and there had been ongoing swarms of earthquakes for a
while before that and afterwards that were said to be due to an
upwelling of magma several miles under Aysen Fjord that would
eventually form a volcano there. There was a quake reported in the
local paper on 3/30/08 that was felt in both Puerto Aysen and Chaiten,
in Mercall II to III range.

Chaiten is not really close to Puerto Aysen, but it's not that far
away, either. They are both in the northern section of Region XI. It
is said that the volcano hasn't erupted for several thousand years;
now that it has erupted, I wonder what effect that might have on the
situation at Aysen, if any.

Barb
----------
““Ah, yes, these modern infidels appeal to their reason; but who can
look at those millions of worlds and not feel that there may well be
wonderful universes above us where reason is utterly unreasonable?”

“No,” said the other priest; “reason is always reasonable, even in the
last limbo, in the lost borderland of things. I know that people
charge the Church with lowering reason, but it is just the other way.
Alone on earth, the Church makes reason really supreme. Alone on
earth, the Church affirms that God himself is bound by reason.”

The other priest raised his austere face to the spangled sky and said:

“Yet who knows if in that infinite universe — ?”

“Only infinite physically,” said the little priest, turning sharply in
his seat, “not infinite in the sense of escaping from the laws of
truth...Reason and justice grip the remotest and the loneliest star.
Look at those stars. Don’t they look as if they were single diamonds
and sapphires? Well, you can imagine any mad botany or geology you
please. Think of forests of adamant with leaves of brilliants. Think
the moon is a blue moon, a single elephantine sapphire. But don’t
fancy that all that frantic astronomy would make the smallest
difference to the reason and justice of conduct. On plains of opal,
under cliffs cut out of pearl, you would still find a notice-board,
‘Thou shalt not steal.’”

-- G. K. Chesterton, "The Blue Cross"
...
Posted: Wed May 07, 2008 12:18 pm
Guest
Dear Belba:
Pueto Aisen in not that close to Chaiten. According to GoogleEarth map
is about ~280 KM. It is very dificult that the evnte of last year in
the Aisen Fjord are correlated. Also Volcan LLaima made a eruption
january 1st, 2007.
On my opinion all the region is experimenting some unusual tectonic
activity. The little town of Chaiten, about 10 Km from the Volcano has
been evacuated(5000), but animals have stayed there (20000 cows). Some
people are waiting a ash avalanche like in Pompey, but since ther are
no volcano instrument on the region is dificult to predic the future
of these eruption. Buy the way the Volcan Chaiten is very small ~800
to 900 meters and can be easy seen on Google earth.
Flavio

Belba Grubb ha escrito:
Quote:
Just wondering. A little over a year ago there was that 6.2 earthquake
in Puerto Aysen that caused a landslide and resultant deadly tsunami
in the harbor, and there had been ongoing swarms of earthquakes for a
while before that and afterwards that were said to be due to an
upwelling of magma several miles under Aysen Fjord that would
eventually form a volcano there. There was a quake reported in the
local paper on 3/30/08 that was felt in both Puerto Aysen and Chaiten,
in Mercall II to III range.

Chaiten is not really close to Puerto Aysen, but it's not that far
away, either. They are both in the northern section of Region XI. It
is said that the volcano hasn't erupted for several thousand years;
now that it has erupted, I wonder what effect that might have on the
situation at Aysen, if any.

Barb
----------
��Ah, yes, these modern infidels appeal to their reason; but who can
look at those millions of worlds and not feel that there may well be
wonderful universes above us where reason is utterly unreasonable?�

�No,� said the other priest; �reason is always reasonable, even in the
last limbo, in the lost borderland of things. I know that people
charge the Church with lowering reason, but it is just the other way.
Alone on earth, the Church makes reason really supreme. Alone on
earth, the Church affirms that God himself is bound by reason.�

The other priest raised his austere face to the spangled sky and said:

�Yet who knows if in that infinite universe � ?�

�Only infinite physically,� said the little priest, turning sharply in
his seat, �not infinite in the sense of escaping from the laws of
truth...Reason and justice grip the remotest and the loneliest star.
Look at those stars. Don�t they look as if they were single diamonds
and sapphires? Well, you can imagine any mad botany or geology you
please. Think of forests of adamant with leaves of brilliants. Think
the moon is a blue moon, a single elephantine sapphire. But don�t
fancy that all that frantic astronomy would make the smallest
difference to the reason and justice of conduct. On plains of opal,
under cliffs cut out of pearl, you would still find a notice-board,
�Thou shalt not steal.��

-- G. K. Chesterton, "The Blue Cross"
Belba Grubb...
Posted: Fri May 09, 2008 8:56 pm
Guest
Gracias, Flavio.

Just wanted to pass along two images related to Chaiten Volcano. The
first documents what happens when a thunderstorm meets an ash column:
http://www.thesun.co.uk/sol/homepage/news/article1133384.ece . I don't
know anything about the photographer, but he or she is clearly
demented, as they got very close to an erupting volcano and also on a
high point during an electrical storm. However, I'm grateful to them
for capturing this rare moment of violent beauty.

The second is a satellite image of its ash cloud:
http://www.sciencedaily.com/images/2008/05/080508092004-large.jpg

Barb
----------
Sodd's Second Law: Sooner or later, the worst possible set of
circumstances is bound to occur.
Seach's comment on Sodd's Second Law: Any volcano warning system must
be designed to withstand Sodd's Second Law.
-- http://www.volcanolive.com/murphy.html
Belba Grubb...
Posted: Fri May 09, 2008 8:57 pm
Guest
Oops -- I noticed Edward's thread linking to the storm/volcano
pictures only *after* I'd sent the link above. Sorry!
John Popelish...
Posted: Sat May 10, 2008 8:55 am
Guest
Belba Grubb wrote:
Quote:
Gracias, Flavio.

Just wanted to pass along two images related to Chaiten Volcano. The
first documents what happens when a thunderstorm meets an ash column:
http://www.thesun.co.uk/sol/homepage/news/article1133384.ece . I don't
know anything about the photographer, but he or she is clearly
demented, as they got very close to an erupting volcano and also on a
high point during an electrical storm. However, I'm grateful to them
for capturing this rare moment of violent beauty.
(snip)


As I understand it, lightning is very common during high
velocity eruptions and is believed to be generated by the
volcano, itself.

http://www.thunderbolts.info/tpod/2005/arch05/050131volcaniclightning.htm
http://www.universetoday.com/2008/05/07/lightning-storm-generated-by-chilean-volcano-images/
http://www.livescience.com/environment/070222_volcano_lightning.html

Larger picture:
http://io9.com/387860/when-volcanoes-spew-lightning

--
Regards,

John Popelish
John Curtis...
Posted: Mon May 12, 2008 2:10 pm
Guest
On May 12, 6:34 am, Belba Grubb <trungsister... at (no spam) yahoo.com> wrote:
Quote:

"The sea appeared to have shrunk into itself, as if pushed back by the
tremors of the earth...the banks had widened, and many sea creatures
were beached on the sand. In the other direction gaped a horrible
black cloud torn by sudden bursts of fire in snake-like flashes,
revealing elongated flames similar to lightning but larger. And then
came the ashes..."
-- Pliny the Younger, 79 AD, Pompeii

Oxidation of volcanic gases is exothermic, accompanied by

heat and light. Sporadic flashes in a vigorous eruption could
be caused by periodic exhaustion of oxygen. John Curtis
Edward Hennessey...
Posted: Tue May 13, 2008 8:01 pm
Guest
Belba Grubb wrote:
Quote:
Oops -- I noticed Edward's thread linking to the storm/volcano
pictures only *after* I'd sent the link above. Sorry!

BG:

No sorry needed. In spite of filters and killfile, all the nut-ball stuff
on the group makes
things easy to miss. Quite the spectacular show.

Regards,

Edward Hennessey
Belba Grubb...
Posted: Fri May 16, 2008 1:20 pm
Guest
On May 13, 9:01 pm, "Edward Hennessey"
<halozzyzxhaloMINUS... at (no spam) yahoo.com> wrote:

Quote:
No sorry needed. In spite of filters and killfile, all the nut-ball stuff
on the group makes
things easy to miss. Quite the spectacular show.

:-)

Yes, it is. And Chaiten doesn't seem to be anywhere near the end of
this; if anything, it seems to be intensifying, per a May 15th report.

<<This further activitation [sic] of the volcano is a situation that
is really worrying us’, Sergio Galilea, Intendente of the Los Lagos
Region, told Reuters today. The Reuters article describes the volcano
as having ‘increased its activity, with frequent small earthquakes’,
and quotes Miguel Munoz of ONEMI: ‘pyroclastic flows are continuing,
and there is a more pronounced emission of ash’. A report from Canal
13 observes that ‘There’s nothing encouraging in the picture from
Chaitén’, with ‘heavy rains and floods nearly destroying the place, on
top of increased activity from the erupting volcano’.>>

-- From the May 15th entry at The Volcanism Blog's Chaiten page:
http://volcanism.wordpress.com/category/volcanoes/chaiten/

Barb
----------
"A great calamity is as old as the trilobites an hour after it has
happened."
-- Oliver Wendell Holmes
 
Page 1 of 1       All times are GMT - 5 Hours
The time now is Sun Jul 06, 2008 8:20 pm