General Volcanic Activity Thread!

[karyo]

Turkey Fears Volcano Eruption

Turkish seismologists fear that the earthquakes that hit the province of Van on 23rd October 2011 can cause eruption of Nemrut volcano located northwards of Lake Van.........http://www.panarmeni...olcano_eruption

I am embarassed to say that I didn't know Turkey had volcanoes!

According to the Global Volcanism page, it has 13!

It looks very interesting with a lake inside its 5 mile caldera. http://en.wikipedia....Nemrut_(volcano)

A bit more info here:http://www.volcano.s...fm?vnum=0103-02=

The last eruption was in 1650!

Karyo

Edited October 24, 2011 by karyo

[The PIT]

One of those interesting questions do earthquakes cause volcano's to erupt or does the filling magma chamber alter the stress along the fault causing the quake?? Does the quake allow magma into the chamber triggering an eruption in the future. Turkey has 13 volcano's The last one to erupt was Tendurek Dagi in 1855 Arart erupted in 1840 vei 3 Nemrut may have erupted in 1692 but that hasn't been confirmed.

This eruption of Etna seems to be lasting longer than the last paroxysm, I am wondering how much the tectonic instability in the south of Europe is affecting it. There are certainly some fine views from the various webcams around Etna tonight.

I was wondering that as the active vents are moving that way will they destabilise that part of the volcano which is sliding towards the sea anyway.

[toggerob]

i'd imagine much like the Christchurch swarms in New Zealand which occurred almost ontop of an ancient caldera, such factors as slippage faults from sedimentary layers being stacked up over hardened volcanic tephra & layering which creates smaller faults in and around the base of the volcano. Van just happens to be located along the North Anatolian Fault, which in turn could be triggering these smaller aftershocks around the Nemrut base.

I would imagine given the Turkish seismological knowledge (unfortunately from recent history they are all too familiar with earthquakes) they'd be able to discern P/S Waves from amplitude or harmonic tremor.

[The PIT]

Going back to El Hierro nothing much to report. Tremors are deep and are based at Frontera until they moved towards the surface scientists aren't too worried. http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/

[john pike]

El Hierro earthquakes and eruption – Updates

http://www.canariesnews.com/2011/09/28/el-hierro-earthquakes-update/

[The PIT]

El Hierro earthquakes and eruption – Updates

http://www.canariesn...hquakes-update/

John that page isn't being updated any more.

Anyway it seems the eruption is still going on looking at this sat picture http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/

Hopefully some videos soon from the submersible.

Edited October 25, 2011 by The PIT

[john pike]

John that page isn't being updated any more.

Anyway it seems the eruption is still going on looking at this sat picture http://earthquake-re...ased-to-yellow/

Hopefully some videos soon from the submersible.

hi pit

they seem to update in bits and bobs

last update on there was last night at 23.20

keep refreshing it throughout the day as they do have

some good info and pictures

[karyo]

hi pit

they seem to update in bits and bobs

last update on there was last night at 23.20

keep refreshing it throughout the day as they do have

some good info and pictures

I love watching the pictures of the landscape! I definately have to visit El Hierro in the future!

Karyo

[tinybill]

seems el- hierro stiring again

Actualidad Volcánica de Canarias (AVCAN)

The signal of the tremor in the last hours tends to intensify and inestabilizarse with explosions that do not correspond to earthquakes, which indicaria that in the area of emission should be more active, but it is that you can see that the seismicity also is intensifying in the path of magma from the Gulf area by NNW-SSE alignment both in frequency and magnitude, and even seems to be some LP, as of the 21: 37, indicating profound movements of magma, which indicates that it is moving the system at all levels, to see how it ends, if with a change in the trend of the system or another stage.. We will see (Enrique).

[yamkin]

Rapid Eye has some amazing true colour, high-resolution satellite images featuring a gigantic stain visible on the surface of Las Calmas Sea. This was the result of a submarine eruption out of the coast of El Hierro, Canary Islandshttp://www.satnews.c...mber=1426874745

[yamkin]

Mount Lokon Volcano Erupts In Central Indonesia, No Injuries

JAKARTA, Indonesia -- A volcano in central Indonesia has erupted, spewing hot smoke and ash thousands of feet into the air. There were no immediate reports of injuries or damage.............http://www.huffingto..._n_1032303.html

Edited October 26, 2011 by yamkin

[The PIT]

Finally we have a view of the eruptive centre plus latest update http://earthquake-report.com/2011/09/25/el-hierro-canary-islands-spain-volcanic-risk-alert-increased-to-yellow/

[yamkin]

Chile Evacuates Residents As Another Volcano Stirs

SANTIAGO, Oct 26 (Reuters) - Chile said on Wednesday it was evacuating residents from around a volcano in the country's far south after it spewed a jet of steam a kilometer into the air and seismic activity triggered an avalanche..............http://www.trust.org...r-volcano-stirs

Edited October 26, 2011 by yamkin

[karyo]

Chile Evacuates Residents As Another Volcano Stirs

SANTIAGO, Oct 26 (Reuters) - Chile said on Wednesday it was evacuating residents from around a volcano in the country's far south after it spewed a jet of steam a kilometer into the air and seismic activity triggered an avalanche..............http://www.trust.org...r-volcano-stirs

Can we hope on any webcams or is it too remote?

Karyo

[Paranoid]

I think it may be quite remote, apparently little was known about it until it erupted in 1971. Last erupted 20 years ago with a VEI 5 eruption.

[yamkin]

Chilean Authorities Raise Alert Level To Red

The Chilean authorities decided to raise the alert level to red and preventive evacuations in an area of ​​40 kilometers around Mount Hudson. The column emission from the eruption reached 1 km in height. The information was confirmed this afternoon from Vice President Rodrigo Hinzpeter Onemi, from where he said he “cannot rule out an eruption,” so it was decided to evacuate people living in that radius.” An over-flight of the area showed a column of smoke and gases out of the cone of the Hudson. In addition, there were some signs of an avalanche in the vicinity..............http://www.diarioand...-volcan-hudson/

http://ilovechile.cl/2011/10/27/hudson-volcano-forces-evacuations-southern-chile/37178

Edited October 27, 2011 by yamkin

[karyo]

Thanks Yamkin,

It looks interesting! I wonder if the eruption is going to be moderate or another VEI5. It is good that the area is quite remote so not many people will be affected.

Karyo

[karyo]

I found this article very interesting! http://www.examiner.com/green-activism-in-national/mysterious-volcano-has-scientists-baffled-as-it-continues-its-rapid-rise

Although, they don't think that this south American stratovolcano is about to erupt, it is interesting that it is inflating very fast and could be 'transforming' into a supervolcano!

Karyo

[Martin M]

It seems as though another intrusion event is taking place at Katla. http://en.vedur.is/earthquakes-and-volcanism/earthquakes/myrdalsjokull/

[summer blizzard]

I found this article very interesting! http://www.examiner....-its-rapid-rise

Although, they don't think that this south American stratovolcano is about to erupt, it is interesting that it is inflating very fast and could be 'transforming' into a supervolcano!

Karyo

It is already part of a super volcanic caldera, it is just that scientists had previously thought that the super volcano was extinct which it clearly is not.

There is actually no guarantee that it would even be a super eruption again as mantle plumes also cause massive effusive events (think Siberian Traps) although history would point towards a super eruption.

[The PIT]

I found this article very interesting! http://www.examiner....-its-rapid-rise

Although, they don't think that this south American stratovolcano is about to erupt, it is interesting that it is inflating very fast and could be 'transforming' into a supervolcano!

Karyo

Yup a lot of magma going beneath that volcano.

Cerro Hudson could be an interesting one.

[ITSY]

yes something is currently happening underneath Katla - 3 signif. earthquakes in a large swarm in the last few hours - much like earlier in September...interesting developments - particularly in relation to the upcoming winter, and LRFs.

[karyo]

yes something is currently happening underneath Katla - 3 signif. earthquakes in a large swarm in the last few hours - much like earlier in September...interesting developments - particularly in relation to the upcoming winter, and LRFs.

If you want to see an effect in our weather/climate then Katla is not the right volcano! Generally, volcanoes near the equator have a greater impact as the can block more sunlight. Katla is too far north so it would only block the weak sunlight that characterises the northern latitudes, especially during the late autumn and winter period.

Karyo

[Martin M]

I've found some nice pictures of the activity at Hudson. http://www.emol.com/especiales/2011/fotosHD/volcan-hudson/index.htm

[Crepuscular Ray]

If you want to see an effect in our weather/climate then Katla is not the right volcano! Generally, volcanoes near the equator have a greater impact as the can block more sunlight. Katla is too far north so it would only block the weak sunlight that characterises the northern latitudes, especially during the late autumn and winter period.

Karyo

But isn't some Icelandic volcano thought to have caused all sorts of devastation, bad weather, starvartion and near destruction of society in the British Isles in the very early post Roman period?

Edited October 27, 2011 by crepuscular ray