The Kos-Nisyros Caldera forming eruption was a mere 10% larger than the ~1620-1610 BC eruption of Santorini. Regardless, it represented the single largest volcanic eruption within Greece within the last 1 million years. However, here is where it gets interesting. There is strong evidence for the existence of each of the three proposed calderas in this video. They could represent older eruptions from the same volcano, but more studies are needed. What are your thoughts?
My thoughts are that it seems to me that a lot of otherwise conventional stratovolcanoes repeatedly go caldera, rebuilding each time. I think it's quite plausible that this is one of those, and I'm very interested in what is going on at depth that separates volcanoes that do this from ones that don't.
Once again, proof that you are the best volcanology channel on RU-vid. The information is very succinct and to-the-point, which I (and clearly many others) appreciate! :)
I really like the content of your video's. Finally some one who makes educational video's without the "hollywood" effect. Keep up the good work. I was wandering of you can do a topic about the Eifelvulcano's in Germany or the dead old shieldvulcano that would be lying under the so called " waddenzee" in The Netherlands.
I have an older video on the Laacher see and another video planned on the east Eifel field. Link: m.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ILKeoTp8gOQ.html
In mythology part of Gigantomachia take place there exactly. Polybotes was chased through the sea by Poseidon and came to Cos and Ruler of the Seas, breaking off that piece of the island and threw it on him. That giant rock called Nisyros. Some names of Poseidon is Sιsixthon (Σεισίχθων) - him who sake the earth or Enosigaios (Ενοσίγαιος) tremor, klonismos (κλονισμός) of earth.
At first I was thinking "recent megaeruption" as in the last couple days. But you're talking geological time. Shows how much I know lol. Anyway, I find your channel most educational. I share your videos with my nephew, who is 12 and fascinated with geology.
Wow interesting as always! I did know that Nisyros contains an active volcano, I didn't know about the caldera! Thanks for teaching me something new everytime you upload a video :)!
Greece is quite interesting-- culture, historically and geologically. The whole northeastern Mediterranean appears to be one big subduction zone. I wasn't aware of such a large caldera in that area, though I am not surprised that such a large camera exists.
There's a ancient volcano in Australia called the Cerberean Caldera which underwent a super eruption 374 Mya, which in turn contributed to the Late Devonian Extinction event . Please do a video on this volcano I want to find out more about it .
Out of curiosity. Is there an average distance from a subduction zone in which you will typically find volcanic activity? Or is that dependent on how thick the plates are?
I'd like to see a video made by yourself that explained the subterranean aspect of volcanoes in more depth. How do we know there are massive lava chambers under there? How do we build an image of the anatomy of a volcano if we can never go down into it and see? New comer to the channel and I love your work. Thank you for the great videos.
General gravitational anomaly surveys, and how quakes pass through an area are a good indication that a magma chamber is present. Energy waves move at different speeds through a liquid (magma) than a solid (host rock)
I've been in the present caldera at Nisyros, it melted my shoe off and I had to hop out ...not before I collected some sulphur through. Given the white Island eruption I don't think I would do that again, as you can hear the steam rushing about like storm waters in a urban sewer system after a deluge.
Wow, be careful of melting your shoes or burning your feet near volcanoes, I once burned my foot on some tiny vent very far from a volcano and I've heard several other stories of people who have too, yours now included.
If you ever visit the island of Nisyros, you should go and see Stefanos* crater with your own eyes. You can even walk on the volcanic crater's surface and this is located right under the village of Nikeia. It is an amazing scenery to be honest with ya
Good stuff! I was wondering...could you detail the volcano that existed to produce Crater of Diamonds State Park in SW Arkansas? Diamonds, I have been told, only exist in/with Kimberlite, which is volcanic.... Thanks 👍
Diamonds can exist in many different areas. The plate shelves that lead to the deeper parts of the ocean do tend to have diamonds. Kimberlite pipes are also capable of bringing them up from depth. The whole of the central usa used to be under a large ocean. Over time the ocean depth decreased and the land depth in some areas increased. There is the New Madrid fault in the area "not sure if it exactly has to do with Crater of Diamonds but you can check online." The area has a long active geologic history.
@@dralord1307 thanks...but New Madrid faulting area has nothing to do with it, that I'm sure of. And since it is the ONLY known incidence of kimberlite intrusion WITH accompanying diamonds in the U.S., I figured there had to be a volcano somewhere that would explain it.
Please make a follow-up video regarding to Taal volcanos latest phreatomagmatic burst, I appreciate your content sir. 🙂 Taal had 8 short-lived burst and 15,600+ tons/day of SO2 emission.
I had the opportunity to work at China Lake, near Ridgecrest, CA. While there I was able travel extensively in the area. In one area not far from a geothermal plant was a field covered with soccer ball sized chunks of obsidian and on top of another mound were very large boulders of pumas. Also driving north on state road 395 can be seen a tall volcanic flow. Then just a few miles more north can be seen a a tall cinder mound. There are many volcanic rocks all around the area.
Great video! I have a question: Are volcanoes in subduction zones generally more "explosive" than the ones seen in divergent zones? (e.g. compare Iceland and Hawaii with Tonga and Mediterranean volcanoes) Dag
I wonder what are your thoughts on Merapi's current status? I haven't heard of two lava domes at that particular volcano before, and the south-west lava dome is particularly huge. Could we see another large eruption like the one in 2010, or will it be smaller than that?
Great video. I still remember when I suggested Nisyros as a video topic and now there is a second video about that region. I never knew there was such a large submarine caldera. Are there any sources where I can learn more about that?
I'm freaked out because there are so many volcanic eruptions going on one after another. La Palma, Tonga, Sakurajima and many more. It's best to evacuate from these hotspots to safer zones.
I was talking to someone online about this and they explained there is a theory that the increased volcanic activity could be due to the solar minimum, which has allowed more cosmic radiation to strike the earth. The thinking is that the cosmic radiation energizes the earth in some way. Interesting theory.
Greece is 99.999999% volcano safe as the most safest answer to give. Greece is very diverse and very spread out with truly immense natural diversity vastly outstripping the size of its lands. Its fully safe to visit it. Greece has all the natural occurences that you can find on the planet. But to die from it or to even experience it is very rare. I visited Greece 50 now, never experienced anything
I have been to this volcano on several occasions over nearly 30 years. Its size really is under stated, especially when looking at the size of the origional caldera. The internals and crater of the volcano have changed with active hot spots moving on a yearly basis. I am also sure that there are several areas where the ground has been rising, which backups up the theory that the chambers are filling below it. Very pretty island to explore with amazing views.
Literally sitting in a bar eating moussaka and drinking a cold beer right now in Mandraki on Nisyros on the edge of this caldera. You make amazing content dude!
Only just seen this one. I suspect that the caldera is larger than you say due to the hot spring in the western part of Kos (Thermae), Bubble beach in Kefalos Bay (CO2 bubbles up just offshore there with a likely volcanic origin) and when you drive through the hills at the eastern end of Kos, there are thick ash/pumice depositsvisible on the roadsides
Isaiah.29.6 thou shall be visited of the lord of hosts, with thunder, and with earthquake, with great noise, with great noise, and the flame of devouring fire.
51Listen, I tell you a mystery: We will not all sleep, but we will all be changed- 52in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed.
Amazing videos but I am pretty sure it's the mantle wedge above that partially melts and not the subducting slab's crust which generates magma (1:19). Common misconception I only learned it recently in a lecture.
Hey man great stuff like aways but slow down on the videos. I fear you're going to run out of volcanoes to cover. And that will be a sad, sad day for us.
With alll our tech we should b able to control all the volcanoes. Maybe dril some places in side away from houses and people towards ocean where it will make more land
Two years agow i went on a trip to the Nisyros volcano. It was amazing to walk inside the biggest subcrater. But it really smells bad! Once again great video!
Your videos are really good. Would you ever do a video on what was called “The orphan eruption” or words to that effect. I can’t remember where it’s been suggested it took place, but it was somewhere in Indonesia I believe.
There was the Orphan Tsunami of 1700 in Japan, caused by a Cascadia earthquake. Do you mean that? It's covered by Nick Zentner, and any of his videos are worth viewing.
3:08 "...a column of ash shot 44 kilometers into the atmosphere..." An oddly specific statement about an event 161,000 years in the past, don't you think? It might be a little more credible to say something like, "....probably shot at least 40 kilometers into the atmospohere..."
