Magma Chamber Refilling Beneath Iceland: Geologist Analysis
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- เผยแพร่เมื่อ 24 ก.ย. 2024
- An update by geology professor Shawn Willsey on the Iceland eruption. A look at the latest data and news.
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Thanks for the shoutout, and good job on the InSAR interferogram description. Let me know if you want to talk more about InSAR some time. I have back-to-back business trips this month, so maybe in a few weeks.
Thanks for giving more details about the inSAR names. What I'm curious about is what the scale and direction of the color maps show. I.e. what direction is the rainbow going, e.g. is green higher than red, or vice versa, and how many millimeters is there in a "full rainbow". 🤔
@@phizc I don’t know if they processed and colored these interferograms in a consistent way to make the direction of the color progression the same for all of them. In this case, we have the Svartsengi GPS station in the middle, so we know the surface is moving upwards.
The S1 (Sentinel-1) interferograms have 3 cm per color cycle, like a contour map with 3 cm contours. The CSK and TSX interferograms have 1.5 co contours.
Thanks Shawn and AmandaJo
Thanks for the update Shawn and Amanda-Jo. Your collaboration with Izak was really good (looking forward to future collaborations) and his thermal drone flights were fascinating. Thanks too for your explanation regarding the satellite interferogram data - it all helps form a 3-d map of what’s happening.
I like the interferogram, perhaps it was designed by a Deadhead. Works for me. Using the last eruption as a model it seems like the next one would be sometime in November. It's been a good run though sadly the community has suffered. My best wishes to the folks in Iceland.
One has to think that one of these eruptions is going to cause more infrastructure damage since the landscape changes with each one.
Thank you for taking the time to update! 👍❤️
the icelandic met office is creating an updated landscape model after each eruption to address this issue.
Then models can simulate the threat of future probable lava flow paths.
Thanks for the update. Satellit billedet var flot og viste hvordan terrænet bliver løftet. 🇩🇰👏
Wasn’t there a knucklehead tourist who climbed on the active erupting area recently? Nuts. Wow, cool to see the remote sensing graphics!! Anyone predicting an end to the eruptions in the near future is engaging in wishful thinking, IMHO. The eruptions have been getting bigger and have been widening the area affected, ie, growing. Thank you for the update, Shawn!
Thank you, Shawn, I look forward to your updates as you always explain things in plain language.
Thanks Shawn and company, me now spending less time checking in , but your updates are must to do !!!😎 Appreciate every time some news coming from you. Keep doing, well done 👍🏻
Thanks for all the hard work on these videos!
So many ideas pop in my head in regards to this volcanic activity in Iceland tied together by questions I wish I could ask you over a nice little chat.
Great update! Thanks so much!
Great update. Thank you Shawn.
Thanks for the update. It is always good to hear how things are going with the eruptions. I feel the next one will be in a few months. Will be waiting for the next update. Have a very good week.
Thank you for the update!😊
Hello Shawn! Thanks for another concise and very informative update :) I try to keep up with the Met Office posts, the GPS and eq data myself but I always appreciate and need your perspective on things. Cool new inSAR imagery indeed! Thanks to Eric Fielding for his help here :)
And I'm really looking forward to your next interview with Thor Thordarson, 'cause I'd like to learn more about Hekla, Katla and Askja too :)
I do the same thing and I always look forward to and appreciate the updates. Ive been watching since last November and have learned so much because of Shawn (and a few other channels/chats). Such a fascinating subject
Thanks for update!
thanks for the update! 👍
This whole series of eruptions seems like such a learning experience in that examining all the available data and then making an educated ( theory, guess, assumption, prediction, forecast, proficiency or whatever) is neat. Isn’t that what science is? Then over the next few months we get to reevaluate the data and adjust our knowledge.
Some people will always be setting their stopwatches to criticize a guess for being off a few seconds on when the next eruption may happen. At this time I think it would be pretty foolish to be claiming your new Lot and start building your new “ house with a view “ in the new lava field. I bet some of the biggest critics of a scientific projection are also chronic gamblers!
Thanks Shawn. It was an incredible experience being there to witness this eruption.
Thanks Professor Willsey! ❤
Thanks Prof, really appreciate your videos. Would love to know more about the other eruptions over Iceland
Oh yeah your knowledge would be really great about the other volcanos in Iceland was hoping you’d do this thank you shawn
Thanks for all the excellent information! My wife and I from Hailey just landed in Iceland for a couple of weeks! We plan to take a helicopter flight over the area tomorrow. It sounds like we won't see much volcanic activity, but it will be fun nonetheless!
Interesting video - sounds like this is a slow and long process / event. Thanks for the interesting videos! 🍁🌰🐿️🍂🍎🍁
Thanks Shawn and Amanda Jo for putting these together for us to watch. A question for you Shawn if you will, since this started with these recent eruptions, how thick has the lava beds grown and is it likely to over top some of the lower mounts as the eruptions go on. Also won't the power station and Blue Lagoon be walled in eventually. I was guessing 30 feet thick with each eruption, but is it more than that ? Jim from Dartford UK.
Thanks professor
Good info. Thank you.
Di…Cumbria
Hi Shawn! Interesting to think of the magma continuing to move without visual signs.
It's because that it is currently filling deep sill storage for now, as the eruption ate up all volume of magma in shallow and good portion of deep storage. Soon as deep storage is filled up and starts to send up more to shallow, then we'll see visual signs of it through INSAR.
GPS is already reporting inflation as there's small volume of fresh magma coming up in shallow storage for now.
I have no clue how all this works really but how can all of this magma keep erupting and then still filling/creating new magma without creating some kind of void somewhere below the surface. I would think if the eruptions come to an end and there is no more refill/ inflation, there would be some kind of "empty space" somewhere below the surface, that could potentially collapse... but i guess that depends on a lot of different things? I guess there is always a deep storage of magma but as long as the gases dont build up, it will be stable ?🤷♀️
What is the yellow triangle out at the end of the peninsula to the west of Grindavik?
Love the content. Thanks for teaching the masses Professor!
Im chuffed about your field trips upcoming. There's always a time during them which i dismay at being stuck in Australia, (they say we will have an eruption in Victoria on the NVP, maybe you would come to Australia. Bring the wife and do the otways paleontology tours at tje dame time!?! 😅 heres hoping! Thanks for all your work on Icelandic Volcanism. Its such a dynamic and evolutionary and changing land, eographically speaking. Youve taken us to the heart of its ever changing landscape. Thanks again
Aloha from Makaha
Thanks for the update, commenting cuz it helps the algorithm
Im chuffed about your field trips upcoming. There's always a time during them which i dismay at being stuck in Australia, (they say we will have an eruption in Victoria on the NVP, maybe you would come to Australia. Bring the wife and do the otways paleontology tours at tje dame time!?! 😅 heres hoping! Thanks for all your work on Icelandic Volcanism. Its such a dynamic and evolutionary and changing land, eographically speaking. Youve taken us to the heart of its ever changing landscape in the land of "Ice and 🔥" Thanks again
🌋✨🧙🍄🍃🏔️🌋
Hi Shawn! Is the distance from the central uplift point West of the power plant to the actual surface breach common to most other eruptions? Interested to see if there's a common distance amongst all similar eruptions in distance from supposed main subsurface collection to surface eruption.
Hello Shawn.
Thanks so much. Really love your work. Please tell me what are ' air bars'?
@@gailgreen5012 they are “error bars”, not “air bars”. It’s used in the graph to show the potential margin of error and is a visual representation of the variability of the data.
Looks like the cone kinda caved in a bit. There are good sized fractures close around the perimeter.
Could you do a program on the Palos Verdes landslide?
Hi Shawn, how soon may occured new eruption, your prediction , thanks.
On the Live from Iceland webcams, there have been at least two lava outbreaks, visible at night. Not sure of the exact location but somewhere on the edge of the lava field. Haven't seen any drone footage of those. Would be interesting to see what's going on there.
Was this last eruption the largest of the series?
Is there a map of the GPS Stations positions in Nov 23 compared to Sept 24 ?
Thank you Professor. Can you help me understand the difference between the Palo Alto land slips and what keeps the fresh lava flows from slipping? Thanks again.
Palo Alto landslide is due to underlying clay soils, not vulcanism. When rainwater (2 years of over average rainfall in LA, surprise) reaches the clay layer it will cause the layers above to slip. They have been dewatering the landslide area, but I think they just found a second clay layer below the first, which makes dewatering less effective. The Palos Verdes landslide or slump has been going on for 100's if not 1,000's of years, but goes through dormant and active periods largely dependent on rainfall. There is no "average" year of rainfall in So. California, only drought (7-8 years at a time) or deluge.
@@toomignon Yes, that is a good explanation about the landslide on the Palos Verdes peninsula next to Los Angeles. The geologists now think there is a second deeper slip surface that was activated by the heavy rainfall of 2023 and 2024 after several years of drought. Some of the clay layers are related to volcanism millions of years ago when the rocks were being deposited.
Do you plan to return...would enjoy a guided tour!?
What elevations differentials do the colors represent on the InSAR maps ? Can those be translated to actual topographic differential maps.
Since it's interferometric, the differentials "loop" back onto themselves, so there's no singular fixed differential for a given colour. If you can fix a point, then of course it can be translated to topographical differentials based off of that point.
However, keep in mind there's larger-scale deformations happening (e.g. lunar and solar tides) that mean there's not a useful "true" differential-amount map. What we are looking for in the interferomic map is for local deformation, which shows up as distortions or changes compared to the larger-scale patterns.
I am hoping that the silica content doesn't change for the worse, though one would not expect it to.
Carolina Bays
unless your not smart...there was a tourist that walked over this area while it was erupting near the latter stages...
❤
Is magma and lava the same
Magma underground, lava above ground.
It’s magma when underground, and it’s called lava when it comes up out of the ground.
Under the ground it’s referred to as magma, once erupted it’s lava: essentially the same but it loses a lot of its suspended gas content when it erupts and the cooling in the air causes minerals to crystallise or oxidise within the molten rock
1 How are you doing oh
1:12
From a geologic perspective, isn't this all one event?
I always appreciate it when you give updates. You only state the facts and only interpret it in English and don't twist things like the liberal media in America. You are definitely a great professor, and your other videos are amazing as well.
Really? How does the liberal media in America twist the coverage of the volcanoes in Iceland??? 🤯
Nothing is worse for people to have faith in science than for scientists to make predictions that they really have no real basis to make them and then be completely wrong . . .
Nobody should have faith in science.
No one should have blind faith in faith either 😊
Indeed. If you have to believe in it you're doing religion, not science.
Science is about facts and data, not faith.
Like religion did since the dawn of time 🧐