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Roger Parsons
26 September 2018 06:47:49


 


Agreed. The only certainty is that Katla will erupt at some point, but as you say that could still be another 100 years away.


However, given its pattern of recent centuries, Katla is overdue for an eruption. When it does blow, it is likely to have a big impact on western Europe, which is why there is so much interest in it.


Originally Posted by: Maunder Minimum 


Morning MM. I have just been reading an article by Anna Agnarsdóttir covering Sir Joseph Banks' interest in Icelandic vulcanism. You might enjoy a look.


http://blogs.bl.uk/european/2018/04/why-did-joseph-banks-go-to-iceland-in-1772.html


Roger


RogerP
West Lindsey district of Lincolnshire
Everything taken together, here in Lincolnshire are more good things than man could have had the conscience to ask.
William Cobbett, in his Rural Rides - c.1830
Chunky Pea
26 September 2018 14:30:55


 


With ongoing changes to atmospheric circulation patterns we cannot say for sure Europe will be in the firing line though?


The past 3 winters have seen a pattern of lows entering the Arctic Basin via Svalbard so any eruption will likely see the plume directed away from Europe?


PW seems to be our self declared expert on such alterations to the Jet?


Originally Posted by: Gray-Wolf 


It could have an affect on the Arctic circulation pattern though, which could have longer term implications for Europe. 


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
Saint Snow
26 September 2018 14:58:07

On an related note, my eldest daughter was telling me about the Mary Shelley film she wants to watch.


I then went into the tale about the background to Shelley's Frankenstein story - the summer spent at the Geneva villa during the 'year without a summer' and the wet, cold weather driving them inside the house for long periods, where they passed the time writing horror stories. The 'year without a summer' was of course the result of the eruption of Tambora. And another cultural influence it had was the paintings of Turner, with the stunning sunsets caused by the tephra in the atmosphere.


My daughter wasn't as enthusiastic about the background as I am.


 



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
ozone_aurora
23 December 2018 00:14:14

Krakatau triggered a tsunami, hitting the coast around Indonesia's Sunda Strait

https://www.bbc.co.uk/news/world-asia-46663158.


 

doctormog
23 December 2018 07:40:48

It looks very nasty and given the past history and also (Anak) Karakatau’s “heritage” I think people are understandably worried.

It seems that the tsunami was caused by underwater activity or an underwater eruption, or at least that is the current theory. The volcano has been active for quite a long time so I’m not sure if this is a portent of something more significant.


Edit: I see that Darwin’s Volcano Ash Advisory Center (VAAC) has also noticed what appears to be an ash cloud to 55000ft in association with the eruption (although at time of writing this has yet to be confirmed).


Hungry Tiger
23 December 2018 13:33:38


Krakatau triggered a tsunami, hitting the coast around Indonesia's Sunda Strait

https://www.bbc.co.uk/news/world-asia-46663158.


 


Originally Posted by: ozone_aurora 


It's starting to look like a major incident.


 


Gavin S. FRmetS.
TWO Moderator.
Contact the TWO team - [email protected]
South Cambridgeshire. 93 metres or 302.25 feet ASL.


Gandalf The White
23 December 2018 14:53:16


 


It's starting to look like a major incident.


 


Originally Posted by: Hungry Tiger 



Indeed.  Obviously made worse by the tsunami htting at night and with no warnings (because it wasn't triggered by an earthquake).


Currently over 200 dead and 800 injured.


https://www.bbc.co.uk/news/live/world-asia-46664024


 


One positive is that this occurred not far from Jakarta so help has reached the area very quickly.


 


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


Gandalf The White
23 December 2018 14:58:18


It looks very nasty and given the past history and also (Anak) Karakatau’s “heritage” I think people are understandably worried.

It seems that the tsunami was caused by underwater activity or an underwater eruption, or at least that is the current theory. The volcano has been active for quite a long time so I’m not sure if this is a portent of something more significant.


Edit: I see that Darwin’s Volcano Ash Advisory Center (VAAC) has also noticed what appears to be an ash cloud to 55000ft in association with the eruption (although at time of writing this has yet to be confirmed).


Originally Posted by: doctormog 


https://www.channelnewsasia.com/news/asia/indonesia-tsunami-what-is-anak-krakatoa-volcano-11057966


The 'child of Krakatoa' has grown to 1,000 feet asl since it emerged in 1928.  That's close on one foot per month.  I must admit I didn't realise it was that active.


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


doctormog
23 December 2018 15:00:16
I didn’t realise it was growing at that rate. That really is very impressive.
Steve
23 December 2018 15:27:01
I've visited Anak Krakatau (during a quieter period) and have a piece of it on my bookshelf.
When you stand on the shore and look around at Rakata, Sertung and Panjang islands - the remaining fragments of the huge 1883 eruption - the sense of awe is almost overwhelming. You really feel you are standing on a pressure cooker and this small island, Anak Krakatau (the Child of Krakatau), is the valve ready to blow.
Indonesia is a wonderful, beautiful country...shaped the destructive power of the natural world.

Roger Parsons
23 December 2018 15:41:57
I found these websites useful when teaching about volcanoes and earthquakes.

USGS Earthquake Hazard page
https://earthquake.usgs.gov/ 

Volcano and Earthquake Resources page
http://www.colby.edu/geology/V&e.html 

Roger
RogerP
West Lindsey district of Lincolnshire
Everything taken together, here in Lincolnshire are more good things than man could have had the conscience to ask.
William Cobbett, in his Rural Rides - c.1830
DEW
  • DEW
  • Advanced Member
25 December 2018 22:08:16

I can understand Indonesian leaders promising a new tsunami warning system, on the principle of must be seen to do something - but it seems a bit doubtful that the 10 minutes or less warning in this case would have made a great deal of difference. For larger earthquake-based tsunamis, they will have to crack the problem of pilfering of spare parts from buoys or go for a (?) more expensive sea-floor system


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

Chichester 12m asl
DEW
  • DEW
  • Advanced Member
27 December 2018 06:43:12

Eruption of Krakatau continues with the news that it's now the subject of  3-mile exclusion zone for aircraft.


Meanwhile Etna renews its activity. The associated earthquake is stated to be unusual  for an Etna eruption - I'd have said that too - and the end of the article has a slightly ominous tailpiece about increased seismicity at Vesuvius which has averaged an eruption every 60 years over 2 millennia. (Last eruption was 1944)


https://www.npr.org/2018/12/26/680283644/sicily-is-shaken-by-earthquake-as-mount-etna-erupts-once-again 


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

Chichester 12m asl
Gray-Wolf
09 February 2019 10:03:37

http://www.geologyin.com/2019/02/extratropical-volcanoes-influence.html?fbclid=IwAR0Sg7u1gmPUXNL0Q_1tlLE7K59TKA-knF8fPiQGT1j1_z_awCxLG_gha54&m=1#pjd9ohzgZtfvbRRx.99

Originally Posted by: picturesareme 


Very interesting!


As far as the injection of sulphates into the strat of the mid lat.s it's worth considering where most of the global industry producing Sulphates is located?


Koyaanisqatsi
ko.yaa.nis.katsi (from the Hopi language), n. 1. crazy life. 2. life in turmoil. 3. life disintegrating. 4. life out of balance. 5. a state of life that calls for another way of living.
VIRESCIT VULNERE VIRTUS
picturesareme
09 February 2019 18:46:18


 


Very interesting!


As far as the injection of sulphates into the strat of the mid lat.s it's worth considering where most of the global industry producing Sulphates is located?


Originally Posted by: Gray-Wolf 


Perhaps there is something in the collapse of the Soviet union,also the reduction of coal burning, and reduction of cold easterlies? 

NMA
  • NMA
  • Advanced Member
19 February 2019 07:40:13

FWIW Etna is worth a visit as I type this.


https://www.skylinewebcams.com/en/webcam/italia/sicilia/catania/vulcano-etna-nord.html


Nick


Vale of the Great Dairies
South Dorset
Elevation 60m 197ft
DEW
  • DEW
  • Advanced Member
19 February 2019 07:44:16

I wasn't expecting the snow scene as well, but it sets off the eruption perfectly


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

Chichester 12m asl
doctormog
19 February 2019 07:46:28


FWIW Etna is worth a visit as I type this.


https://www.skylinewebcams.com/en/webcam/italia/sicilia/catania/vulcano-etna-nord.html


Nick


Originally Posted by: NMA 


What a fantastic view! 


DEW
  • DEW
  • Advanced Member
19 March 2019 20:06:03

Popocatapetl in action


https://www.independent.co.uk/news/world/americas/popocatepetl-eruption-today-volcano-mexico-ash-cloud-mud-slides-a8829301.html


 


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

Chichester 12m asl
Lionel Hutz
29 March 2019 15:22:13
https://www.rte.ie/news/newslens/2019/0329/1039329-mexico-volcano/ 

More on Popocatapetl. Fine picture.
Lionel Hutz
Nr.Waterford , S E Ireland
68m ASL



NMA
  • NMA
  • Advanced Member
29 March 2019 17:14:39

Thank you DEW and Lionel


I love a good eruption as long as I am not next to the vents. Still waiting for Stromboli to begin a nighttime show again.


Nick


Vale of the Great Dairies
South Dorset
Elevation 60m 197ft
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