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Chaiten is a CALDERA volcano
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Anonymous Coward
User ID: 454539
6/19/2008 10:28 AM | |
Anonymous Coward
User ID: 373696
6/19/2008 11:48 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Talk about "Darkness at noon". Glad I'm watching on the internet. |
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Anonymous Coward
User ID: 454642
6/19/2008 11:52 AM | | Re: Chaiten is a CALDERA volcano | Quote |
yeah, it's a good webcam that, isn't it?
seems to have quietened slightly. Still going though. |
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Anonymous Coward
User ID: 454791
6/19/2008 4:50 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.aipchile.cl]
plume is going directly over the camera now.
impressive stuff.
After you press the link, wait for the thumbnails to load, then press 'empezar' |
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Anonymous Coward
User ID: 454791
6/19/2008 4:52 PM | | Re: Chaiten is a CALDERA volcano | Quote |
i wonder how many cubic KMs this has pumped out so far? |
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Anonymous Coward
User ID: 455049
6/20/2008 5:15 AM | | 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
PMSL. You are willing the collapse of the dome. It's not going to happen for months if at all.
Stop getting excited at a bit of lens flare on a piddly webcam :D |
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Anonymous Coward
User ID: 455186
6/20/2008 11:59 AM | | 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.
PMSL. You are willing the collapse of the dome. It's not going to happen for months if at all.
Stop getting excited at a bit of lens flare on a piddly webcam :D Quoting: Anonymous Coward 455049
shut up you ponce.
anyway, here is Alan Sullivan's latest take on it at Seablogger.
[link to www.seablogger.com]
'' Chaitén’s dome is growing at an unprecedented rate. If one scans a brief, technical presentation, one finds nothing in this class. A larger survey of dome-building shows a partially comparable event, at Mount Lamington in Papua New Guinea, during a 1951 eruption. A violent explosive episode began on January 21. Dome-building commenced four days later. It proceeded at a rate of about 18 cubic meters per second until March 5, when a paroxysmal eruption blew most of the new dome away. After that climactic event, dome-building resumed and continued for several more months.
At Chaitén the first stage of dome-building was estimated at 37 cubic meters per second. It has now accelerated past fifty. No wonder the photos are so striking. This is an event outside historic parameters. It is consistent with the large magma chamber implied by the initial earthquakes. But the eruption is rhyolitic. This is a comparatively rare lava with a high silicate content and relatively low sulfur content. Only a few rhyolitic dome formations have been observed. There is virtually no basis for prediction. There is no way to know the significance of recently increased seismic activity and very rapid dome growth. Certainly it seems ominous.'' |
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Anonymous Coward
User ID: 455186
6/20/2008 5:34 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[ link to www.aipchile.cl]
plume is going directly over the camera now.
impressive stuff.
After you press the link, wait for the thumbnails to load, then press 'empezar'
there seems to have been a big eruption on that cam in the past hour. the plume can be seen going off to the north east away from the camera. |
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Anonymous Coward
User ID: 455186
6/20/2008 5:36 PM | |
Anonymous Coward
User ID: 455664
6/21/2008 8:25 AM | |
Anonymous Coward
User ID: 461339
7/1/2008 2:10 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.aipchile.cl]
some superb views of the eruption today. wait for the thumbnails to load, then press 'empezar' |
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Anonymous Coward
User ID: 470668
7/19/2008 5:40 PM | |
Schmieder
User ID: 324203
7/19/2008 6:27 PM | | Re: Chaiten is a CALDERA volcano | Quote |
Quoting: Anonymous Coward 470668
I bet that is a lot of crap to pump into the Earths atmosphere. How many tons so far and what comparisons can we use to model climate effects? |
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OxygenX
User ID: 466305
7/20/2008 6:05 AM
 | | Re: Chaiten is a CALDERA volcano | Quote |
Definately a High 5 on the VEI scale I dont think the Eruption cloud at any point has put enough SO2 into the atmosphere at any point to affect the climate in any serious way.
Cheers.
-----------------------------
"Your world's on fire and it's about to expire" |
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Anonymous Coward
User ID: 470889
7/20/2008 6:10 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Definately a High 5 on the VEI scale I dont think the Eruption cloud at any point has put enough SO2 into the atmosphere at any point to affect the climate in any serious way. Quoting: OxygenX
it doesn't have to be serious to play havoc with us. We are already on a knife-edge, (SO THEY SAY) with food supplies worldwide, maybe just a slight effect will have huge ramifications. |
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Anonymous Coward
User ID: 470889
7/20/2008 6:17 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Definately a High 5 on the VEI scale I dont think the Eruption cloud at any point has put enough SO2 into the atmosphere at any point to affect the climate in any serious way.
it doesn't have to be serious to play havoc with us. We are already on a knife-edge, (SO THEY SAY) with food supplies worldwide, maybe just a slight effect will have huge ramifications. Quoting: Anonymous Coward 470889
also, I reckon this thing has gone over the VEI 6 point now as well.
[link to books.google.co.uk]
It was at 2.5 kilometres of erupted material a week or two into the eruption.
It's been going, NON STOP now, for about 12 weeks. |
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Anonymous Coward
User ID: 470889
7/20/2008 6:22 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Also, I'd like to remind you again about this Daily Mirror (UK newspaper) headline just after the eruption started.
[link to www.mirror.co.uk]
''Chaiten volcano means outlook is cloudy and Chile''
THEY know! |
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Anonymous Coward
User ID: 470889
7/20/2008 6:41 AM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.seablogger.com]
''Chaitén Update 34
Friday, 18 Jul 08, volcanoes
Seismicity have been very high for about a week now, with 350 small quakes per day, and an increasing number of larger ones. Sernageomin in its last release surmised that magma was on the move. So far the eruptive pattern has not changed, but it is hard to imagine that this level of seismicity will fail to signal larger explosions. How large? There is no knowing. As I have observed many times, we are outside the brief human timeline with this eruption. It is a rare event.'' |
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kuykjhkj
User ID: 470908
7/20/2008 6:49 AM | |
Anonymous Coward
User ID: 471292
7/21/2008 9:37 AM | | Re: Chaiten is a CALDERA volcano | Quote |
Ok, here we go again it would seem.
[link to www.seablogger.com]
''Chaitén Update 36
Monday, 21 Jul 08, volcanoes
The eruption has increased, as one would expect from the recent build-up in seismicity. Many observers have expected explosions. Instead we are seeing a return to sub-Plinian mode, with column reported up to 25,000 feet in the latest VAAC advisory. I have not yet checked the weather. Yesterday was clear and calm, with a polar high over Patagonia. Volcanic haze settled over the whole coast. I assume that fair skies may still be present at dawn today. The webcam should be interesting.''
As indeed it IS! spectacular views.
[link to www.aipchile.cl]
wait for the thumbnails to load then press 'empenzar' |
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Anonymous Coward
User ID: 471409
7/21/2008 12:32 PM | | Re: Chaiten is a CALDERA volcano | Quote |
That north side camera is facing into the sun and is either in shadow of ash clouds or has camera flare from the sun.
Here are the other camera views:
[link to www.aipchile.cl]
I'm on dial up. Hope somebody tells me which are the better views... |
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chaiten's gonna get ya!
User ID: 472906
7/24/2008 5:11 PM | | Re: Chaiten is a CALDERA volcano | Quote |
 |
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Anonymous Coward
User ID: 472906
7/24/2008 5:20 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.seablogger.com]
''There is something happening, and it probably means one of two outcomes: collapse without explosion, if the available magma has mostly erupted already; or collapse with explosion, if there is still enough gassy magma chambered under the volcano. The former would have only local effect; the latter could cause the world-altering event I have feared from the outset.'' |
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Anonymous Coward
User ID: 472906
7/24/2008 5:25 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to volcanism.wordpress.com]
''The main news therein is an increase in the number and magnitude of earthquakes around the volcano: ‘The seismic activity recorded by STAB and PUMA telemetry stations indicated about 320 VT-type earthquakes in the last 24 hours, 55 of which were notable for their greater magnitude of more than 2.6M’. These quakes were situated south and south-east of the volcano, but the records of seismic monitoring stations at Calbuco volcano and Lago Ranco (170km and 270km north of Chaitén volcano, respectively) reveal similar higher magnitude earthquakes taking place north of Chaitén as well. The most recent Chaiten bulletin to be made available by SERNAGEOMIN, dated 21 July 2008, also noted the high level of seismic activity . In that earlier bulletin SERNAGEOMIN predicted a prolongation of eruptive activity, and the same point is made in this latest report: ‘As noted in previous reports, both the large number of VT-type earthquakes and the magnitude of a significant number of them can be attributed to a possible new injection of magma, which may prolong the eruption (perhaps for months) and further intensify the eruption column and, perhaps, the growth of the new dome’.'' |
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Anonymous Coward
User ID: 110292
7/24/2008 5:28 PM | | Re: Chaiten is a CALDERA volcano | Quote |
This doesn't sound good at all !!!! |
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Anonymous Coward
User ID: 287857
7/24/2008 5:30 PM | | Re: Chaiten is a CALDERA volcano | Quote |
I wonder if there's a link between that volcano and all the quakes we've been having? Quoting: Anonymous Coward 336435
Yes, it is called RESONANCE.
as in HAARP and GWEN,VLF,ELF, and so on...generates heat and vibrates whatever is targetted |
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Anonymous Coward
User ID: 473346
7/25/2008 1:41 PM | | Re: Chaiten is a CALDERA volcano | Quote |
uh-oh
''Chaitén Update 39
Friday, 25 Jul 08, volcanoes
The last Sernageomin bulletin, dated July 22, spoke of an increase in overall seismic energy release at the volcano, with numerous quakes up to magnitude 2.6 located north, south, and southeast of the eruptive dome. The seismic activity could indicate ring fracturing and incipient collapse into a new, larger caldera. An overflight and close-up photography might help to indicate whether such a process was underway. One would expect to see surface cracking. But weather has been too inclement. Yesterday the webcam showed just a few glimpses of plume amid rushing clouds and showers. Despite the quaking, there was no apparent change in the eruptive column, which appeared to play no higher than 10,000 feet.
Salient question: would there be enough internal pressure to trigger a major explosion and paroxysmal eruption during a collapse, or not?
Update: The Volcanism Blog reports on new seismic information. It is very ominous. Deeper quakes have begun ENE of the volcano. Magma is moving. The webcam has shown occasional glimpses of plume beyond broken clouds today. The plume height is minimal, no more than a few thousand feet. This is probably not a good sign either. Seismicity is building, but gas is not escaping.''
S SE ENE N |
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Anonymous Coward
User ID: 473346
7/25/2008 1:41 PM | | Re: Chaiten is a CALDERA volcano | Quote |
uh-oh
''Chaitén Update 39
Friday, 25 Jul 08, volcanoes
The last Sernageomin bulletin, dated July 22, spoke of an increase in overall seismic energy release at the volcano, with numerous quakes up to magnitude 2.6 located north, south, and southeast of the eruptive dome. The seismic activity could indicate ring fracturing and incipient collapse into a new, larger caldera. An overflight and close-up photography might help to indicate whether such a process was underway. One would expect to see surface cracking. But weather has been too inclement. Yesterday the webcam showed just a few glimpses of plume amid rushing clouds and showers. Despite the quaking, there was no apparent change in the eruptive column, which appeared to play no higher than 10,000 feet.
Salient question: would there be enough internal pressure to trigger a major explosion and paroxysmal eruption during a collapse, or not?
Update: The Volcanism Blog reports on new seismic information. It is very ominous. Deeper quakes have begun ENE of the volcano. Magma is moving. The webcam has shown occasional glimpses of plume beyond broken clouds today. The plume height is minimal, no more than a few thousand feet. This is probably not a good sign either. Seismicity is building, but gas is not escaping.''
S SE ENE N
[link to www.seablogger.com] |
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Anonymous Coward
User ID: 473346
7/25/2008 1:50 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to www.seablogger.com]
''Groundwater is often involved with volcanic activity. Many volcanoes have extensive hydrothermal systems — especially those in wet climates. The Chaitén area is very wet, especially in winter. Groundwater seeping toward an active magma conduit will of course turn to steam. It may emerge from the main vent or elsewhere. Certainly this process could cause seismic disturbance — but not on the scale occurring now. I suspect a system of ring fractures is forming around the volcano, which has been mechanically destabilized by the partial emptying of the magma chamber and the weight of the newly extruded dome. Caldera collapse is probably imminent. Soon we may really find out what Chaitén is capable of. If there is additional magma moving into the system, the likelihood of an explosive collapse is surely increasing.'' |
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Anonymous Coward
User ID: 473346
7/25/2008 8:02 PM | | Re: Chaiten is a CALDERA volcano | Quote |
[link to eruptions.wordpress.com]
“ONEMI, the Emergency Office of Chile, is expressing concerns that Chaiten might be readying an even bigger blast than what we’ve seen already in the past few months. In particular, ONEMI direction Carmen Fernández is concerned that the volcano might have a major explosion with accompanying ash fall and pyroclastic flows. They are pointing to the increased seismicity at depth under Chaiten as potential evidence that the conduit to the surface is partially blocked, and thus building pressure for a large explosion - think Augustus Gloop in Charlie and the Chocolate Factory if you want a mental picture.'' |
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