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Chaiten is a CALDERA volcano
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Paleo J
User ID: 431434
5/11/2008 2:32 PM | | Re: Chaiten is a CALDERA volcano | Quote |
WTF?
Chilean volcano ash could 'collapse' any minute
A huge plume of ash towering above the Chilean Chaiten volcano could collapse and plummet to earth, an expert has warned.
Residents within a 30-mile (50 kilometre) radius of the volcano have now been forced to evacuate from the area.
The Chaiten volcano is located about 1200 kilometres south of Santiago.
Luis Lara, a Government geologist and volcano expert says that it is possible the plume of ash and rock debris could collapse, killing anyone within it's path.
"We are at a critical point of this phase given the characteristics have remained the same for several days," Mr Lara said.
"The volcano is now at its limit and one possibility is that the column could collapse quickly, generating flows of pyroclastic material down its ravines.
"But there are also other scenarios, such as the energy of the eruption being released more gradually."
Geologists have now recommended that the town be moved from it's current location near to the volcano.
[ link to www.scopical.com.au]
standard risk for this type of eruption, and scary!
heres some interesting facts on pinatubo...
It ejected roughly 10 billion metric tons of magma, and 20 million tons of SO2, bringing vast quantities of minerals and metals to the surface environment. It injected large amounts of aerosols into the stratosphere—more than any eruption since that of Krakatoa in 1883. Over the following months, the aerosols formed a global layer of sulfuric acid haze. Global temperatures dropped by about 0.5 °C (0.9 °F), and ozone depletion temporarily increased substantially.
Vast quantities of minerals and metals were brought to the surface. Overall, introduced to the surface environment, was an estimated 800,000 tons of zinc, 600,000 tons of copper, 550,000 tons of chromium, 300,000 tons of nickel, 100,000 tons of lead, 10,000 tons of arsenic, 1000 tons of cadmium, & 800 tons of mercury.
The former summit of the volcano was replaced by a caldera 2.5 km wide.... |
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Anonymous Coward
User ID: 410940
5/11/2008 2:41 PM | | Re: Chaiten is a CALDERA volcano | Quote |
I sure have learned a lot about volcanoes since following this Chaiten event. The most interesting is learning that volcanoes can generate lightning and interact with storm systems. |
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Paleo J
User ID: 431434
5/11/2008 2:47 PM | | Re: Chaiten is a CALDERA volcano | Quote |
Oh yes!
The lightning really helps to give people an idea of just how much energy is being dispursed during these events! Ive been studying vulcanology since i was 14, It is very fascinating and humbling. |
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Geogal
User ID: 373387
5/11/2008 5:43 PM | | Re: Chaiten is a CALDERA volcano | Quote |
You seemed to know a lot about vulcanology by your posts. I was wondering if you were a Geologist. I'm assuming yes, due to the name you've chosen. Is Paleo or Vulcanology your speciality?
Oh yes!
The lightning really helps to give people an idea of just how much energy is being dispursed during these events! Ive been studying vulcanology since i was 14, It is very fascinating and humbling. Quoting: Paleo J |
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Paleo J
User ID: 431434
5/12/2008 2:47 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Geogal,
I wish that I could say I had a degree, but as of yet im still pursueing! Im activily studying Geology, Astronomy, Vulcanology and Archeology! I guess you can say i've got my hands full, and I absorb alot of information.... The nickname Paleo J actually comes from my hobby of flint knapping ( for those who dont know its the ancient art of stone tool/weapon crafting), and most of the re-production points i make are from paleolithic era, like the Clovis.
I do make them all aboriginal, unlike alot of modern knappers! I have a never-ending passion for knowledge of the past and future, hence my wide range of studies! HSU is where i currently attend. |
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Geogal 
Hu ka pele, lava pour forth
User ID: 373387
5/12/2008 10:59 AM
 | | Re: Chaiten is a CALDERA volcano | Quote |
Well, paleoJ, you are well on your way to becoming one if you want, by the sounds of what you know about it. By the numerous things you study, you can go into a wide range of fields in geology if you want... I'd rather not get into it here and take too much away from the thread subject.
THAT is a very cool hobby! And I know what you mean about passion for knowledge. I'm insatiably curious. I'm also dual majored geology and civil engineering. But, I love to read up on all kinds of things. Reading is also a passion of mine.
Geogal,
I wish that I could say I had a degree, but as of yet im still pursueing! Im activily studying Geology, Astronomy, Vulcanology and Archeology! I guess you can say i've got my hands full, and I absorb alot of information.... The nickname Paleo J actually comes from my hobby of flint knapping ( for those who dont know its the ancient art of stone tool/weapon crafting), and most of the re-production points i make are from paleolithic era, like the Clovis.
I do make them all aboriginal, unlike alot of modern knappers! I have a never-ending passion for knowledge of the past and future, hence my wide range of studies! HSU is where i currently attend. Quoting: Paleo J
Woman of white garment, foreign woman, earth-eating woman, taking and giving life, she is Pele
"ONCE IN HIS LIFE, EVERY MAN IS ENTITLED TO FALL MADLY IN LOVE WITH A GORGEOUS REDHEAD" - LUCILLE BALL |
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Anonymous Coward
User ID: 431861
5/12/2008 11:18 AM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to volcanism.wordpress.com]
''A bulletin issued late yesterday by ONEMI summarizes the state of things at Chaitén volcano as follows:
Chaitén volcano maintains continual emanations of ash with a column between 5500 and 7000 metres in altitude and a plume trending east south-east towards the town of Futaleufú. At 16:30 today the column appeared dense with ashfalls on the Argentine side. The town of Futaleufú is not affected by this situation. The Meteorological Directorate of Chile reports that over the next few days predominantly western winds in the Central and South zones of the country will carry the ash towards Argentine territory.''
''At a press conference yesterday (11 May 2008), SERNAGEOMIN volcanologist Luis Lara said that the situation at Chaitén remains dangerous. It is unclear precisely how the eruption will develop, but ‘the persistence of a seven-kilometre-high column of pyroclastic material and a series of strong earthquakes’ means that the worst-case scenario ‘remains in force’. That worst-case scenario would involve the collapse of the eruption column, producing ‘an explosion of pyroclastic material which would fall at 200 kilometres per hour upon the valleys and water-courses of Chaitén, destroying everything in its path’'' |
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Anonymous Coward
User ID: 434472
5/17/2008 6:17 AM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.seablogger.com]
''Chaitén Climax
Friday, 16 May 08, volcanoes
After several weeks of Plinian eruption, Chile’s Chaitén volcano showed major seismic changes today. Emergency authorities released a lengthy bulletin. The Volcanism Blog has done a superb job with timely translations from the Spanish. I have viewed the Chilean sources, but my Spanish is too rudimentary for reading them, and translation programs would probably have difficulty with the geological terms. Here is a key passage:
Over the past two days marked changes have been witnessed in the seismic activity [of the volcano]. A swarm of earthquakes, mainly of the HB [hybrid] type, has occurred, which is interpreted as related to a fracturing of the main conduit with subsequent ascent of magmatic fluids by the conduit and also through the dome. The later predominance of LP type earthquakes confirms the seismic instability of the system, the origin of which is related to the evident movement of magmatic fluids. In consequence there remains a certain possibility of future major explosions causing the destruction, in whole or in part, of the dome and the generation of pyroclastic flows through the collapse of the column. Nor can the possibility of new lateral explosions be disregarded.
Let’s recall the onset of the eruption. One significant earthquake on April 30 preceded the first explosions; four more accompanied them on May 2. Epicenters were arrayed radially around the caldera. Their locations implied that a very large magma chamber might be released by the eruptive process. After the initial blasts, the eruption settled into a near steady-state, sustained so long that a vast amount of material must have been released by now — perhaps doubling the two cubic kilometers of ejecta estimated in the first phase. (Caveat: that’s just a guess.) But the plume has not been punching high enough to matter, in the global scale.
That may change very soon. If the magma conduit is breaking up, and the capping lava dome explodes away, a Tambora-sized event could happen in the next few days. It is plausible that the blowout could be even greater. The tragedies of China, Burma, or Sumatra are trivial in comparison with what may be about to occur. Global climate is already cooling; food supplies are already tight. The Four Horsemen have been stabled for many years. Tonight I can hear their mounts champing.
Update: 9:30 PM EDT: I can see it on the satellite image now. Plume height is building rapidly. The next image should be released around 11 PM EDT. US images are updated every 20 minutes, but South America gets short shrift. I’ll stay up and add another update.
Update 2: 11:30 PM EDT: New image out. It is ambiguous. There is a massive upper level moisture plume over the region. Enhanced returns are present around the volcano, but I can’t be sure what is cloud, what is ash. Tomorrow the weather should begin a slow clearing trend, and we’ll get a better look. Meanwhile, welcome to the end of Al Gore’s fantasy world.'' |
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BadMoonRising
User ID: 373223 (OP)
5/17/2008 6:21 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Thanks for that link.
This could be BIG folks! |
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Anonymous Coward
User ID: 434472
5/17/2008 6:30 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Thanks for that link.
This could be BIG folks! Quoting: BadMoonRising 373223
2 fucking right it could!!
time for a repin maybe, until it blows or calms down? |
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Anonymous Coward
User ID: 434472
5/17/2008 8:27 AM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.seablogger.com]
''Stream and Shear
Saturday, 17 May 08, volcanoes
I have studied the infrared time lapse of southern South America, such as it is. The weather in the eruption area has turned decidedly wintery. In the wake of the big rainstorm, polar flow from the southeast has engulfed Patagonia, and this airmass is now punching westward over the Andes to the Chilean coast. At the same time a very stong upper jet is running from west to east. Several small disturbances are forming knots of enhanced (high and cold) cloud cover in the axis of the jet stream. They have been racing toward and over South America. With the poor quality of available images, I find it difficult to discern weather from volcanic phenomena.
There is now intense sheer acting on the volcanic plume from Chaitén. At lower levels, under three kilometers, part of the plume is being torn away by strong easterly winds and carried westward. Ashfall has hit islands and towns that were previously unaffected. Some of the evacuees may require another move, further from the danger. Also the sea is covered with floating pumice, and vast mats of it are drifting toward the only port in the area. As a boater, I can imagine what happens to a water-cooled engine when the intake sucks a bunch of the world’s best abrasive. All activities within an ever larger radiius are being impaired.
Higher in the atmosphere, above the shear layer, the jet stream winds take the rest of the ejecta eastward as before, continuing to lay a swatch of ash across Argentina to the Atlantic. Shear conditions are particularly troublesome for authorities trying to plan response to a volcanic eruption. With plumes splitting and moving in different directions at different elevations, it becomes much more hazardous to operate aircraft, even hundreds of miles away. Also the zones of ash fallout become more erratically distributed and harder to anticipate. Sheared winds seem likely to continue for several more days now, with the polar influence much stronger than before.
At least the clouds will break from time to time in this new weather pattern. Satellite images will improve today, and if aircraft can negotiate the shifting ash layers, we may get some good photos of the crater and the plume. There is also a USGS team arriving on the scene today with additional equipment for seismic monitoring. Geologists know the peril of this eruption, and at present I think they would prefer not to have too much discussion in the media. But it’s hard to hide from bloggers!'' |
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meras
User ID: 434508
5/17/2008 8:36 AM | |
Anonymous Coward
User ID: 433697
5/17/2008 10:55 AM | | Re: Chaiten is a CALDERA volcano | Quote |
To summarize
Saturday 17th May 2008
Chaitén Volcano, Chile
Continuous eruptions are occurring at Chaitén volcano in Chile. The airfield at Chaitén town has been covered by ash and water, and is currently not able to be used. Ash and pumice is floating northwards along the Chile coast. The bay near Chaitén contains run-off from rivers with a milky-green colour. A large amount of sediment has blocked river channels, and lahars will continue to overflow river edges. Over the past two days there has been a marked change in seismic activity at the volcano. Earthquake swarms indicate fracturing of the main conduit, and possible ascent of magma towards the surface. Increasing pressure from magma is creating a potential explosion hazard, and collapse of the dome, generating pyroclastic flows.
from [link to www.volcanolive.com]
Just gets better & better. Let's hope for some good satellite pics. |
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Anonymous Coward
User ID: 434472
5/17/2008 11:26 AM | | Re: Chaiten is a CALDERA volcano | Quote |
better and better is not a phrase I'd use.
 |
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Anonymous Coward
User ID: 433697
5/17/2008 11:31 AM | | Re: Chaiten is a CALDERA volcano | Quote |
better and better is not a phrase I'd use.
Sorry, I'm a sucker for natural disasters, especially when they're on the other side of the planet.
No one can rule out a Tambora type explosion, but none of the pros are predicting one either. I'm old enough to know that the worst rarely happens.
And so I don't come across as a heartless bastard, the people of Patagonia do have my sympathies, along with those in China and the millions who are suffering without any attention grabbing natural disasters to bring them international relief. |
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cameldreamer
User ID: 434618
5/17/2008 12:22 PM | | Re: Chaiten is a CALDERA volcano | Quote |
Pinatubo ejected 10 cubic km´s, this volcano between 2-4 cubic km´s and is showing no signs of nearing its end.
This is not serious?
Pinatubo affected the global weather, if this erruption continues another 3 weeks we will have equivalent emissions.
The local weather has already been affected. |
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Anonymous Coward
User ID: 435114
5/18/2008 12:27 PM | | Re: Chaiten is a CALDERA volcano | Quote |
Looks like we're approaching the end game!!
[link to www.seablogger.com]
''Chaitén Climax
Sunday, 18 May 08, volcanoes
I have gleaned the latest advisory from the Buenos Aires VAAC for hints about the ongoing eruption at Chaitén. Recent advisories have some new elements, and some old ones missing.
Added: "VA CLD OBS AT 1247Z TOP FL 300 COLUMN VERTICAL." In other words, the Plinian eruption is more intense and more classic, shooting straight up almost six miles, in continual play.
Added: In the lines of forecast code, ash is predicted at flight levels from surface to 50,000 feet within 6 hours. The position codes in the forecast indicate spread of a stratospheric plume through tomorrow.
Omitted: "FL 200/350 NO ASH EXP." This had appeared in forecast code for some previous briefings during slight pauses in the eruption.
Omitted: "FL 350/550 NO ASH EXP." This had appeared in forecast code for all previous briefings. Draw your own conclusion why it is gone now.
It’s a good bet that scary seismic data have been relayed to the aviation authorities. This is it. Soon we will know exactly what awaits our world. Then we will have to tell people — it doesn’t look as though the media will do the job.''
HERE WE GO!!!!!!
 |
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Anonymous Coward
User ID: 408056
5/18/2008 12:47 PM | | Re: Chaiten is a CALDERA volcano | Quote |
On April 2, the volcano awoke...
The volcano's eruption in June 1991 produced the second largest terrestrial eruption of the 20th century.
[link to en.wikipedia.org]
& later that same year, in a hemisphere far away, made for some very extreme weather
The Halloween Blizzard was a period of heavy snowfall and ice accumulation that affected parts of the Upper Midwest of the United States, from October 31–November 3, 1991.
Snow
The heavy snow began falling across east central Minnesota and northwest Wisconsin during the late afternoon hours of October 31. By midnight, the Twin Cities had already recorded 8.2 in (20.8 cm) of snow. This not only set a record for the most amount of snow on that date, but also for the most snow ever recorded in the Twin Cities during the month of October. As the storm system pushed its way northward, more communities in eastern Minnesota and northwestern Wisconsin began to experience similar conditions.
Over the next two days the snow continued to fall, leading to additional snowfall of one to two feet (30 cm to 60 cm). By the time the snow ended on November 3 the storm had dropped 36.9 in (93.7 cm) on Duluth, the largest single snow storm total in Minnesota history at that time. The Twin Cities received 28.4 in (72.1 cm), setting a single storm record for the metropolitan area. In all, at least one foot (30 cm) of snow fell in a swath approximately 100 mi (160 km) wide from south central Minnesota, northeastward into northwestern Wisconsin and into the Minnesota Arrowhead. A more narrow band of 2+ ft (60+ cm) of snow fell from the Twin Cities to Duluth and northward.
[link to en.wikipedia.org]
in the short term, global warming is no longer much of an issue |
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Anonymous Coward
User ID: 435114
5/18/2008 1:11 PM | | Re: Chaiten is a CALDERA volcano | Quote |
This was at 1421 on the 16th..
''OBS ASH CLOUD: VA CLD OBS AT 1421Z PROB BLW FL250 IMC''
[link to www.ssd.noaa.gov]
the ash was below 25000 feet.
This is on the 17th at 1247..
''OBS ASH CLOUD: VA CLD OBS AT 1247Z TOP FL 300 COLUMNA VERTICAL''
[link to www.ssd.noaa.gov] |
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Anonymous Coward
User ID: 435114
5/18/2008 1:35 PM | |
Anonymous Coward
User ID: 283900
5/23/2008 7:32 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to volcanism.wordpress.com]
so 20 days later and this volcano is still smoking
with a new dome appearing to the north side of the original
Chaiten town is now flooded due to ash blocking up rivers
positive thoughts to all those affected
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Anonymous Coward
User ID: 452460
6/15/2008 6:25 PM | | Re: Chaiten is a CALDERA volcano | Quote |
something seems to have happened today. a big explosion or something. check out these three different webcams of Chaiten, between 1749 and 1757 (Chile time)
north camera [link to www.aipchile.cl]
south east camera [link to www.aipchile.cl]
north east camera [link to www.aipchile.cl]
click on the thumbnail pics at the tops of the links.
looks like it is going off again.
[link to www.aipchile.cl]
also, although it is now dark down there, the last few pics on the cameras are all BRIGHT. |
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Anonymous Coward
User ID: 452460
6/15/2008 6:48 PM | | Re: Chaiten is a CALDERA volcano | Quote |
are you seeing these pics people?
hurry, before they turn all black again. i think they are covering up these pics because there were bright pics earlier, then they went black. |
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Anonymous Coward
User ID: 452460
6/15/2008 6:51 PM | | Re: Chaiten is a CALDERA volcano | Quote |
are you seeing these pics people?
hurry, before they turn all black again. i think they are covering up these pics because there were bright pics earlier, then they went black. Quoting: Anonymous Coward 452460
they're turning black again! |
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Anonymous Coward
User ID: 452460
6/15/2008 6:52 PM | | Re: Chaiten is a CALDERA volcano | Quote |
dammit
on that first north camera link, no more than 2 minutes ago, the last 4 pics were lit up like daytime, and now they're all black. |
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Anonymous Coward
User ID: 452460
6/15/2008 6:57 PM | | Re: Chaiten is a CALDERA volcano | Quote |
quick, look at the last two pics on the south east cam |
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Anonymous Coward
User ID: 453537
6/17/2008 3:19 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.aipchile.cl]
camera view of the eruption.
click 'empezar' to play the movie.
one to bookmark i think. |
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Anonymous Coward
User ID: 453537
6/17/2008 6:27 PM | | Re: Chaiten is a CALDERA volcano | Quote |
Quoting: Anonymous Coward 453537
click on the link NOW, and look at the pics at 1749 and 1754. wtf is that flash? it isn't the sun. that had gone down way before. it was starting to go dark, and in fact 10 minutes after the flash had subsided it went dark. you can compare a shot of the sun illuminating the plume at 1614. it looks TOTALLY different to the shots at 1749 and 1754.
weird. |
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Anonymous Coward
User ID: 454539
6/19/2008 8:50 AM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.aipchile.cl]
NORTH camera view.
the sun has just risen in Chile, and Chaiten is going for it, by the looks of it.
After you press the link, wait for the thumbnails to load, then press 'empezar' |
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Anonymous Coward
User ID: 454539
6/19/2008 10:18 AM | | Re: Chaiten is a CALDERA volcano | Quote |
[ link to www.aipchile.cl]
NORTH camera view.
the sun has just risen in Chile, and Chaiten is going for it, by the looks of it.
After you press the link, wait for the thumbnails to load, then press 'empezar'
are we going to lose this camera soon I wonder?
look at the mast to the left of the pic, you can't see it anymore. |
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