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PK2
  • PK2
  • Advanced Member
19 April 2012 09:54:50


Who says riskiest? and measured by what criterion? e.g.


Yosemite - every 3/4 m years, but capable of wipng out life worldwide


Katla - every few hundred years, capable of causing starvation in Europe


Etna - every decade, could destroy a town or two in Sicily


and if, as I suspect, Popocatapetl is being nominated for 'most risky', it's probably on a combination of frequency, violence and closeness to inhabited areas, there are certainly other strong contenders in Indonesia such as Mount Merapi.


Anyway, here's a list of 10 to keep your eye on, with data and some nice photos:


http://www.travelvivi.com/top-10-most-dangerous-volcanos-worldwide/


Originally Posted by: DEW 

or there's the list of "decade volcanos".

Retron
19 April 2012 16:23:23
Ah, Katla - lots of blumf in the media after that other Icelandic volcano went up, all basically saying that it would go off within a year. It didn't, of course.

Sod's law says it'll go off in the next 2 weeks, as I'm meant to be flying to Chicago on holiday on the 2nd!
Leysdown, north Kent
doctormog
19 April 2012 16:36:18

Ah, Katla - lots of blumf in the media after that other Icelandic volcano went up, all basically saying that it would go off within a year. It didn't, of course.

Sod's law says it'll go off in the next 2 weeks, as I'm meant to be flying to Chicago on holiday on the 2nd!

Originally Posted by: Retron 



To be fair, it did actually erupt in 2011 but it was apparently so small that almost no-one noticed. As you suggest not the cataclysmic event that some areas of the media were suggesting. I have a hunch Katla will probably erupt "properly" within the next 5 to 10 years as it is slowly bundling up to that IMO.

Enjoy your holiday!

The excellent "Eruptions blog" puts the volcanic hazard discussion into context...location, location, location.

http://www.wired.com/wiredscience/2012/04/when-it-comes-to-volcanic-hazards-it-is-all-about-location/#more-106947 
Aberdeen
Current conditions (personal WS) 
DEW
  • DEW
  • Advanced Member
19 April 2012 16:43:32



 


Who says riskiest? and measured by what criterion? e.g.


Yosemite - every 3/4 m years, but capable of wipng out life worldwide


Originally Posted by: polarwind 

Yosemite?


Originally Posted by: DEW 


Sorry, Yellowstone caldera

War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl
doctormog
20 April 2012 20:02:28

I see that Popocatepetl has been rumbling and pumping out ash again today (from 60 openings apparently!)

http://www.bbc.co.uk/news/world-latin-america-17793797


 


Edit: It looks even more active today and more residents in the area are being evacuated. To me the data suggest a large eruption may be likely/imminent.

Aberdeen
Current conditions (personal WS) 
doctormog
23 April 2012 20:43:35
While Popo continues to rumble Etna is putting on a little bit of a show tonight too (again)

http://www.guide-etna.com/webcam/CAMERA1.jpg 
Aberdeen
Current conditions (personal WS) 
doctormog
13 May 2012 12:06:19
Popo is still erupting and for those interested Katla may boffering up for an eruption of some sorts in the very near future. Certainly worth keeping an eye on.
Aberdeen
Current conditions (personal WS) 
Dougie
01 June 2012 07:26:29

Popo becomes more active.


http://www.bbc.co.uk/news/world-latin-america-18290809

Ha'way the lads
Patrick01
07 June 2012 18:18:59

Katla looking rather unsettled this evening from a brief glance at the earthquake page:


 


http://en.vedur.is/earthquakes-and-volcanism/earthquakes/myrdalsjokull/#view=map 

doctormog
09 June 2012 15:46:43

Katla looking rather unsettled this evening from a brief glance at the earthquake page:


 


http://en.vedur.is/earthquakes-and-volcanism/earthquakes/myrdalsjokull/#view=map 

Originally Posted by: Patrick01 



Yes, and again today. The quakes may not be big but they seem to be increasingly frequent and very shallow. I wonder if Katla is on the verge of an eruption and if so will it be so small that we do not even notice (like last year's) or something else...? Or the option is of course the activity will die down again and the wait for the next eruption will continue.

One thing's for sure and that is it is more likely to erupt than Yellowstone 😉
Aberdeen
Current conditions (personal WS) 
schmee
23 June 2012 16:19:17


Good idea


 


In terms of current activity, another volcano I doubt anyone has heard of before deserves mention:


Scientists investigate riddle of rapidly expanding volcano Uturunco


Originally Posted by: Essan 

Observations from around GUILDFORD in SURREY and now Nottingham
doctormog
25 June 2012 15:56:34
El Hierro (the Canary Island) appears to be rumbling once again with recent swarms of earthquakes in the last day or two. I would not be surprised to see some form of renewed activity there in the near future.
Aberdeen
Current conditions (personal WS) 
doctormog
27 June 2012 18:44:38
I see that the alert status has now been raised from green to yellow in parts of the island in response to the recent activity
Aberdeen
Current conditions (personal WS) 
doctormog
01 July 2012 14:47:23
As well as a 4.2 magnitude quake (one of over one thousand quakes in the last week) there has over the last 7 days been over 7.5cm of vertical uplift/deformation across the island. Impressive.
Aberdeen
Current conditions (personal WS) 
doctormog
01 July 2012 18:23:19
And on another front, there was a quake a couple of hours ago in Eritrea very close to where last year's quake was at Nabro. I wonder if it may have come to life again?

http://earthquake.usgs.gov/earthquakes/eventpage/us2012cmay#summary 
Aberdeen
Current conditions (personal WS) 
Saint Snow
10 July 2012 15:39:32

Did anyone see Volcano Watch last night?


Never thought it was possible to make a programme focusing on volcanoes so dull.


Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
schmee
10 July 2012 19:12:53
I thought to myself i must see that and forgot long after the advert . didn't miss much by the looks if it. David attenborgh narrated a brilliant series years ago. never rival since.
Observations from around GUILDFORD in SURREY and now Nottingham
Saint Snow
10 July 2012 20:24:32

Wasn't as bad tonight


Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
schmee
10 July 2012 22:44:55


Wasn't as bad tonight


Originally Posted by: Saint Snow 

Observations from around GUILDFORD in SURREY and now Nottingham
ozone_aurora
25 July 2012 21:52:19

 


Sakurajima of Kyushu, Japan, is one of the world's most active volcano, producing spectacular vulcanian eruptions and lightning display, and does so on a daily/weekly basis. It's eruptions are currently becoming stronger.

http://www.volcanodiscovery.com/sakurajima/news/10472/Sakurajima-volcano-Kyushu-Japan-stronger-and-more-than-usual-frequent-explosions.html.

It's most recent eruption can be seen here:-

http://www.youtube.com/watch?v=XUpicKVrjiI.


It's typical eruptions can be seen here:-

http://www.youtube.com/watch?v=IcdFoUPxzLY


http://www.youtube.com/watch?v=E4j-PGiSYQI&feature=youtu.be

ozone_aurora
28 July 2012 13:57:21


 


Sakurajima of Kyushu, Japan, is one of the world's most active volcano, producing spectacular vulcanian eruptions and lightning display, and does so on a daily/weekly basis. It's eruptions are currently becoming stronger.

http://www.volcanodiscovery.com/sakurajima/news/10472/Sakurajima-volcano-Kyushu-Japan-stronger-and-more-than-usual-frequent-explosions.html.

It's most recent eruption can be seen here:-

http://www.youtube.com/watch?v=XUpicKVrjiI.


It's typical eruptions can be seen here:-

http://www.youtube.com/watch?v=IcdFoUPxzLY


http://www.youtube.com/watch?v=E4j-PGiSYQI&feature=youtu.be


Originally Posted by: ozone_aurora 


 


The most recent video of the eruption at the time of writing is here (although slow motion):


http://www.youtube.com/watch?v=zH-Nm949-dE&feature=youtu.be

doctormog
06 August 2012 16:08:45
After some seismic activity over recent weeks I see that Mt Tongariro in New Zealand's North Island is erupting (to what level I'm not sure).

http://www.stuff.co.nz/national/7426862/Ash-falls-around-Tongariro

http://www.civildefence.govt.nz/

I see that White Island volcano (also NZ) had a small eruption last night. Coincidence?
Aberdeen
Current conditions (personal WS) 
doctormog
08 August 2012 16:05:37
NASA have a great image showing the ash cloud over NZ's North Island from the Tongariro eruption.

http://earthobservatory.nasa.gov/IOTD/view.php?id=78791&src=eoa-iotd 

Things at Tongariro and White Island are relatively quiet at the moment but that could change. Whether they were little blips or "throat clearing" before something bigger is yet to be determined. An interesting time after a fairly quiet few years for New Zealand's volcanoes.
Aberdeen
Current conditions (personal WS) 
doctormog
10 August 2012 07:05:03
And another interesting article/event discussing the pumice "island" from an apparent underwater eruption in the region

http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10826068 
Aberdeen
Current conditions (personal WS) 
DEW
  • DEW
  • Advanced Member
10 August 2012 19:05:49

Some interestong technical stuff here


http://earthquake-report.com/2012/08/06/new-zealand-volcanoes-mount-tongariro-volcano-new-zealand-erupts-after-115-year/

War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl

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