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#1170549 - 05/02/2013 17:06 Re: Volcanoes [Re: Arnost]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
That's an interesting picture Arnost and I wonder if it's worth a eek
Cheers, Duck.

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#1171261 - 10/02/2013 10:58 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
Voclano Discovery is a terrific site for info, pics etc....
If I've posted this link before....apols smile

There is a lot of focus on EQ's atm, most understandably. But 'we' need to observe the volcanic activity as well (and I'm sure many people do). I feel there may be some considerable 'issues' building in some areas. There may be more simultaneous eruptions to occur at some point.
Underwater volcanoes, in some regions are becoming more active or are surprising some with their appearance.
Like those who are monitoring these underwater mounds, I have thought for a long time now that these 'unseen' characters will start to or increase in their being noticed as an important part of how our planet is behaving atm......
Cheers, Duck smile

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#1171540 - 11/02/2013 19:44 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
Tinakula Volcano - Santa Cruz Islands

This post is relevant to the earthquake thread as well.

The above volcano is erupting. With all the quake activity in this region, I wonder how big the ultimate eruption/s will be? Or if it is just 'energies' passing through/up/by....?

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#1171559 - 11/02/2013 21:31 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
Well gee wiz...I came across this article just now which discusses exactly the type of energies I have mentioned in the earthquake thread.
The mental picture that the scientist builds, as you read the article, is spot on with what was going through my scientifically untrained mind.
Anyway "Is the Earth cooking up another super volcano"

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#1171764 - 13/02/2013 10:00 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
Nearly choked on my breakfast when I began to read this...but then discovered we may be ok for another "100 million years"...I feel better now crazy

"Extinction Level Super-Volcano growing in the Pacific"

With what has been occurring for the Santa Cruz Island regions, the content of this article sort of 'confirms' the feelings I have been having about the where particular energies may be hovering deep below.
Even though a mega eruption of this description could express itself in other regions too, I have been 'stuck' on the Pacific region (near Wallis and Fortuna/Solomons (and surrounds)) for a very long time (years) now. But hey, I am no visionary or prophet (so don't rely on my words for scientific info.), but I feel that the volcano near Santa Cruz Is. is still one to keep an eye on for the time being. Though the energies there may 'move' to a region (far WNW [of the globe] or NE and/or SE of the Pacific).

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#1171804 - 13/02/2013 14:49 Re: Volcanoes [Re: duckweather]
Arnost Offline
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Registered: 10/02/2007
Posts: 3908
I am a bit of a fan of antipodal impactor caused mantle plumes. i.e. the seismic shock propagates through the elastic mantle (and around the liquid core) such that there is a convergence at the antipodal point - which then creates a long lasting crustal weakness as evidenced by a "permanent" mantle plume / hot spot.



I am a fan of the Chicxulub impactor causing the Deccan Traps volcanic activity for example. And we also have known antipodal volcanic activity at similar times elsewhen. See Siberian Traps and Wilkes Land Impactor and the (suspected) Bedout crater.

I know that there is lot's of poo-poohing of this on the basis that for example the Chicxulub crater was not directly antipodal to the traps...



but there is the possibility that if the impactor hits at an oblique angle, then the antipodal shockwave convergence is shifted.




There is also another possibility, where it may be that there was an impactor that disrupted the antipodal mantle earlier, created a weakness but the resultant hot spot remained sub-crustal. There was then a second nearby impactor that then triggered the volcanic activity - and this one may not have needed to be "exactly" antipodal.

For example, the Morokweng crater in South Africa is antipodal to Hawaii. Whilst we can't be sure exactly when the Hawaiian Islands hot spot started, the northern islands are at least 80 million years old. The initial lava flows must have been much older. The 2 billion years old Vredefort crater is only a couple of hundred Km east of the Morokweng crater. It is possible that one reason for the enormous mass of the Hawaiian Islands is that they formed on top of a sub-crustal hot-spot caused by a very ancient previous antipode impact nearby.

And hence we now have super-volcanic hot spots like yellowstone, sub-Iceland and others, just waiting for a trigger to blow (or a hammer to strike to be more precise)... and set up another extinction event...

_________________________
“No. Not even in the face of Armageddon. Never compromise” ...

And this of course applies to scientific principles. Never compromise these. Never! [Follow the science and you will be shown correct in the end...]

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#1171931 - 14/02/2013 08:53 Re: Volcanoes [Re: Arnost]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
That's an interesting set of information Arnost.

When you consider that, regarding physics dynamics, when an object scores a vertical hit on an surface, the resultant energy is displaced in a fairly uniform fashion (that's assuming the surface it hit has no deviations in its form [such as a huge mountain formation] - with the strongest force from the impact being directed down from the impact point).
But, as you mention, if the object (e.g. asteroid) hit the surface at, for e.g. a 90degree angle, the energy from the force would be generally on an angle relevant to that angle of impact. A good experiment to see a possible example of these impact dynamics, is to use an egg (or a sphere, with a breakable surface and filled with liquid or powder) an piff ball bearings at it. This was one my experiments I used to show 'force' and displacement of energies.
I believe in cause-and-effect, and what you mention in your post Arnost is very interesting.

I'd better stop here grin I just get a bit carried away when talking about physics etc..

Cheers, Duck wink

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#1186865 - 29/03/2013 23:00 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
Here's a very interesting article I came across regarding an under-sea volcano blow-out in the southern Pacific.
Curiously, I noted (in blog - for March) -
Quote:
I feel that somewhere in the western side of the Pacific, that an underwater volcano mound may become more evident.

This obviously only says a 'mound more evident' and appears somewhat vague. I quietly (actually) felt that this was going to be more than a mound being more obvious - sometimes I down-play my feelings about some 'maybe' events, as I don't want to be an alarmist or scare-monger.
I kept getting drawn to this general region for the potential release of such previously 'unseen' volcanic energy.

Cheers, Duck.

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#1186868 - 29/03/2013 23:19 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
Hang on folks....just checking 'dates/times' on the last post. I think this volcano may be acting up atm., but I'm finding conflicting times/dates in other articles on this region.
Bear with me. I'll try and verify some more facts on this interesting story. (Maybe I need some reading glasses as well smile )

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#1196015 - 28/05/2013 10:37 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic

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#1196074 - 28/05/2013 17:59 Re: Volcanoes [Re: Lindsay Knowles]
Arnost Offline
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Registered: 10/02/2007
Posts: 3908
Jeez you're fast! I only came across Copahue just then!
_________________________
“No. Not even in the face of Armageddon. Never compromise” ...

And this of course applies to scientific principles. Never compromise these. Never! [Follow the science and you will be shown correct in the end...]

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#1196081 - 28/05/2013 18:25 Re: Volcanoes [Re: Arnost]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
grin This ol' duck has some zippiness left in her yet Arnost.
I even cooked a gourmet dinner in 20 minutes last night...excelled myself...another brewing as I type...kids are impressed...cats stunned....dogs faces glued to the kitchen window in awe and feeling good coz I solved the rat problem at my house (they were outside - not in). (Melbourne is in the middle of a rat plague).
Cheers, dynamo Duck cool .

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#1196524 - 31/05/2013 09:29 Re: Volcanoes [Re: Lindsay Knowles]
Arnost Offline
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Registered: 10/02/2007
Posts: 3908
There hasn't been an update on Sernageomin since 29/5... That update suggested that there were increasing tremmors. The compulsory evac zone is 25km - and evacuations continue.

_________________________
“No. Not even in the face of Armageddon. Never compromise” ...

And this of course applies to scientific principles. Never compromise these. Never! [Follow the science and you will be shown correct in the end...]

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#1196529 - 31/05/2013 09:42 Re: Volcanoes [Re: Arnost]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
What an amazing photo - though beautiful in so many ways, unnerving in another way. I wonder how the folks who live on the shoreline here feel.
Duck.

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#1196604 - 31/05/2013 15:11 Re: Volcanoes [Re: Lindsay Knowles]
Arnost Offline
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Registered: 10/02/2007
Posts: 3908
There is an update on the Sernageomin site. Whilst the swarm of earthquakes continues, thes have decreased to about 40 an hour (av 1 magnitude).
_________________________
“No. Not even in the face of Armageddon. Never compromise” ...

And this of course applies to scientific principles. Never compromise these. Never! [Follow the science and you will be shown correct in the end...]

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#1200050 - 21/06/2013 00:39 Re: Volcanoes [Re: Lindsay Knowles]
snafu Offline
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Registered: 27/06/2012
Posts: 1437
Loc: Belmont, Lake Macquarie, NSW
POPOCATEPETL, México

An explosion on 17 June produced an ash plume that rose more than 4 km, and ejected incandescent tephra up to 2 km from the crater. Some of the high-temperature fallout caused small fires in grasslands on the flanks. Ashfall was reported in Tetela del Volcán (20 km SW), Ocuituco (24 km SW), Yecapixtla (31 km SW), Atlatlahucan (30 km WSW), Cuautla (43 km SW), Tlayacapan (40 km WSW), Yautepec (50 km WSW), Jiutepec (60 km WSW), and Xochitepec (70 km WSW) in Morelos state. Ash also fell in Ecatzingo (15 km SW), Atlautla (17 km W), and Ozumba (18 km W) in México state. The Alert Level remained at Yellow, Phase Two.

Time lapse video of explosion (no sound)

_________________________
We have about five more years at the outside to do something.
Kenneth Watt, ecologist - Earth Day, 1970
43 years later...we're still here.

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#1200136 - 21/06/2013 16:37 Re: Volcanoes [Re: Lindsay Knowles]
Arnost Offline
Weatherzone Addict

Registered: 10/02/2007
Posts: 3908
That's great vision! You can actually see the shockwave of the initial explosion rippling through the clouds...
_________________________
“No. Not even in the face of Armageddon. Never compromise” ...

And this of course applies to scientific principles. Never compromise these. Never! [Follow the science and you will be shown correct in the end...]

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#1200210 - 21/06/2013 22:17 Re: Volcanoes [Re: Arnost]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
Incredible video...

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#1207644 - 19/08/2013 13:20 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
I've been remiss with this thread in not posting much here.
But anyway, here's a link to an article about a volcano in Japan that has just blown 'it's stack'. This leaves me wondering if it's sister, Fuji, may become more active too..? Between earthquakes and volcanic eruptions, what's next for the poor folks in Japan?
"Massive eruption at Sakura-jima volcano...apan" by Adonai This article has videos of the eruption.

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#1208077 - 23/08/2013 09:06 Re: Volcanoes [Re: duckweather]
duckweather Offline
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Registered: 20/12/2010
Posts: 2556
Loc: Wantirna, Vic
I don't always get time to keep up to date info on all of the sections of General Science here so, here's a link to Volcano Discovery's page regarding all of the Volcanoes which are erupting. active and so on.

Volcano Discovery - Volcanoes - what is erupting

There seems to be an increasing occurrence of volcanic activity and for quite a while now, I have been gabbling on on my blog about the potential discoveries/recognition of submarine volcanoes and vents coming to life here and there, and this appears to be happening.
There seems to be, as I felt there would, an increase in 'energy' surrounding volcanoes, in harmony with several of the larger quakes. This dynamic earth certainly an interesting entity.

Cheers, Duck.

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