43 comments on “Tectonics of the Kamchatka Peninsula

  1. oh this is where you’ve gone! looks pretty, the posts look good, blog rule number 2 prevents me from ever working again – not sure, but that might be a good thing, or it might want rewording slightly 🙂

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    • Oh, we cannot have that, you need to pay some taxes in your country! So I changed the wording slightly. 🙂 Thank you for the hint, and welcome here, Edward!

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  2. Sernageomin has just raised the technical alert level for Villarrica from yellow to orange again. There has been increased seismic activity the last few days and some week strombolian explosions last night and this morning. Restriction zone was increased from 3 to 5 km. It is believed that this activity will not get as strong as the last eruption. http://www.cooperativa.cl/noticias/pais/desastres-naturales/erupciones-volcanicas/sernageomin-aumento-a-naranja-alerta-tecnica-por-volcan-villarrica/2015-03-18/121039.html

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  3. Great article on Kamchatka, I knew little about it and had no idea it had so many volcanoes. I am now much better informed! I look forward to improved readability.

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  4. Oh no! Had a classy, unique, and unmistakably distinct color theme that could not be mistaken for any other. . .sorry, now looks too similar to VC.
    Yes, I know, I know- should have expressed my opinion earlier.

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  5. And goodness-my apologies for failing to congratulate VolcanoHotspot and those that make it so!!

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    • Hi maggiemom, thank you and welcome! I am sorry that you are disappointed now. We all thought the old theme was beautiful, but the inconvenience of reading a pale brown tiny font on a dark background was just too bad for many.

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  6. Hello all! It’s done, readability improved! What do you think? I know, it doesn’t look so unique anymore, but WP just does not let you costumize their color themes much. They want you to buy them first, then you can change everything to your heart’s content. So we had to compromize, let go of our beautiful theme – and choose another beautiful one. Admit it, you like the lightning flashes (of Sakurajima?) at the top! 😉 And we are still open for all sorts of suggestions for improvement!

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  7. Thanks, Dragons! No good having a classy-looking site if reading it gives you eyestrain. After all, it’s the content which is important. Although I’m a bit bemused by the change of header to Volkano Hotspot, it could make you less visible to newcomers finding sites through googling, they will likely put ‘volcano’ in the search, not volKano.

    While I’m here, a few questions on Kamchatka:

    Any theories about why the western chain (Sredinny Range) ‘switched off’ in its entirety in the mid-Holocene, within what is geologically a relatively short time frame?
    Would subduction of the Emperor Seamounts (which are after all the remnants of large basalt shields) have any effects on Kamchatkan volcanism near the region where they, as it were, made landfall?

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    • Grrr!…where is that mischievous German gremlin that changes Cs to Ks, wait until I’ll get you!!

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    • Real good questions. Sounds like fodder for another post. Many thanks for the ideas. Will see what I can come up with. Of course, we always are looking for contributions from our readers. If you or anyone else wants to look into this and write something up, that would be way cool. Cheers –

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      • I don’t think I’m qualified to post an article on Kamchatka subduction; it has been said “a fool can ask questions that a wise man cannot answer” and I think that applies here. However, should a Dragon try to do a follow-up post, I found the following relevant references:

        https://books.google.co.uk/books?id=qDm5QEq0yCUC&pg=PT109&lpg=PT109&dq=sredinny+range&source=bl&ots=gGPbw9qy0U&sig=O01-1j8FQK6tu3I9SpvoMyfgLWQ&hl=en&sa=X&ei=fkkLVeH6KILNPZ3xgOAG&ved=0CDwQ6AEwBQ#v=onepage&q=sredinny%20range&f=false

        and this one

        http://www.kscnet.ru/ivs/bibl/sotrudn/volan/2006/volynets_jkasp.pdf

        I’ll have another look at these in the morning when my brain is in gear…

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        • MD –

          Many thanks for the links. Will provide some avenues for further research.

          FWIW, none of us to the best of my knowledge are qualified. This is an amateur operation, essentially manned by hobbyists and people who love the subject and want to understand it better. The old definition of amateur is someone participates in something for the love of doing it. And I think it holds here.

          I am reminded of the old Firesign Theater album entitled “I think we’re all bozos on this bus.” And so we are. Proudly so, btw.

          My day job is a mainframe guy. My formal education and experience is aerospace. I have an interest in geology partly because I want to know how things work, how they came to be, and partly because I used to fly over a bunch of things and wonder why they look the way the look. Now I am in the very early stages of figuring it out. No expert here. Not even close. Probably need to regularly post the appropriate “I’m no expert” weasel words in each post to make that clear in the future.

          But we are all learning at some level and each time we write something we get smarter about that topic, whether from the research, the process of putting semi-coherent thoughts together, or from comments “what about this” “what about that” “what about that other thing” and most importantly, “you screwed this up “. This is how we learn. This is how we grow to understand what is going on. This is how we all get better. Shoot, none of us can get worse, as the difference between more understanding and less understanding is huge, perhaps infinity.

          So, from my perspective, regardless how foolish you or anyone else may think it is, come on in. The water’s fine. There are fellow travelers here, perhaps (hopefully?) even friends. And you’ll never know until you take a shot. We will help with posts as necessary, though less is always better than more, as less help reflects more of what you think and why. We’d all like to know what you think and why. This goes for every single person who reads this blog, as this is a group-powered enterprise and can go no farther than where we and our readers determine we want to go.

          Posts can be any length – short ones that report an eruption for instance; longer ones that ask a question; even longer ones that survey a volcano or field or region. If we make mistakes, we own up to them, figure out why and press on to the next event. No harm. No foul.

          Hope this helps a bit. Not intended to be insulting. Rather intended to be a friendly hand into the food fight. It is remarkably invigorating to figure out new stuff. Come join us. Cheers –

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          • Perfectly said, Agimarc. I was a nervous wreck when I submitted my first article on Volcanocafe. I was a newcomer to the workings of volcanoes. The 2009 eruption of Redoubt in Alaska was the game changer for me, so I wrote about what I knew and felt about it. The lovely comments I received assured me that no matter how much a person does or does not know, there are others on the same level who can relate to your article. Personal comments/views within the article help the readers get to know you a little better. We are, after all, virtual friends sharing the love and awe of volcanoes.

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    • Hey Michael, as it’s been said, not a professional.

      With that said, my guess as for why the Sredinney ridge has switched off in large part is due to a steepening of the subducting slab angle from a more flat-slab subduction style, to a drastically steeper angle.

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    • Hi Brenda, welcome and thanks a lot! I know you are igneous rock of the volcanoholics 😉 , hope you enjoy our blog as well!

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  8. A wonderful good morning to all! Just to remind you, today is the first day of spring, the spring equinox, and additionally we will (hopefully) get to see a total solar eclipse. The show is scheduled to begin in about 4 hours from now. It’s a Total Solar Eclipse in the Faroe Islands and Svalbard (Norway), and a Partial Solar Eclipse in Europe, northern and eastern Asia and northern and western Africa. The eclipse starts at 07:41 UTC and ends at 11:50 UTC.. Find out more here: http://www.timeanddate.com/eclipse/solar/2015-march-20

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      • I can see it!!! I have taped four layers of brown packaging tape over an old pair of glasses, and just the sun is coming through it with it bite taken out of the circle!

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        • Saw an interesting effect many years ago during a partial solar eclipse crossing central Louisiana. Think it ended up between 80 – 90% totality where I was. It was summer, so there were leaves on the trees. When I looked down at the ground under the tree, there were little crescents all over the place. It was a really cool look. When sunlight passes through a tree, the little openings act a lot like myriad pinhole cameras. You almost always see a small round spot, which is the image of the sun. During an eclipse, that spot is crescent shaped. Obviously if there are too many leaves, no light can get thru, so this effect tends to work best on younger, smaller, more sparsely leaved trees. It also does not work on pine trees. Was a way cool sight. Did you see such a thing today? Cheers –

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  9. My friend just left Svalbard yesterday, I think I would have had to find a way to stay 2 more days, it looked very cold, but beautiful.

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  10. Video from a survey of the Turrialba volcano after its latest eruption. (Published on YT by Repretel Costa Rica, 20 March 2015)
    This is a translation of the Spanish comments on the video:
    “The latest Turrialba volcano eruptions left more than an extensive suite of ash and much fear. An expert’s visit to the crater this week confirmed not only the large amount of debris, rocks and ash ejected by the Turrialba, but also an expansion of the crater gap of abt. 20 meters to the east has been observed. More physical changes of Turrialba include a widening of the duct. At the moment the Turrialba volcano is quiet. The activity between March 8 and 13 allowed ducts to be cleared, now it is just degassing. This quiet wait could last for days, weeks or even months.”

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  11. Do you know some books about volcanoes, geology, ect. written for little ones (4+) or pupils?
    Thanks a lot!

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  12. Hi

    I did this nearly 2 years ago.

    This is a view of the Tolbachik – Shiveluch area earthquakes between 2011 and 2013. Pretty lively place.
    I’d kept a “window” of 2000 quakes to avoid overcrowding.

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  13. For some years I have been looking almost daily at the timelapse of the MVO’s thermal camera on Soufriere Hills (Montserrat) and never seen anything out of the ordinary. Until today 🙂

    Liked by 1 person

    • Hi Granyia
      seems you’re right, it looks like the heli seen from below with the hot twin turbine exhaust

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