United States Volcano Update; Magma is on the Move, Uplift Detected at Mt. Spurr
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- čas přidán 26. 06. 2024
- In Alaska, a likely intrusion of magma was detected beneath the closest volcano to the city of Anchorage. This detection occurred at the famous Mount Spurr, which has been producing an elevated level of earthquakes during the last month. Alongside these earthquakes, ground deformation was detected, meaning that this volcano which hasn't erupted since 1992 it now producing its highest level of unrest in nearly two decades. So, does this mean that it is now only a matter of time before the highly explosive Mount Spurr erupts, potentially once again dumping ash on Anchorage? How severe is its current unrest? This video will answer these two questions and discuss the ongoing situation.
Thumbnail Photo Credit: Neal, C. A., Alaska Volcano Observatory/U.S. Geological Survey, avo.alaska.edu/image/view/310. This image was overlaid with text, and then overlaid with GeologyHub made graphics (the image border & the GeologyHub logo).
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Sources/Citations:
[1] U.S. Geological Survey
[2] Alaska Volcano Observatory
[3] University of Alaska Fairbanks, Geophysical Institute
[4] Zhang, Ying & Li, Aibing & Hu, Hao. (2019). Crustal Structure in Alaska From Receiver Function Analysis. Geophysical Research Letters. 46. 10.1029/2018GL081011.
[5] J. Ewert, A. Diefenbach, D. Ramsey, "2018 Update to the U.S. Geological Survey National Volcanic Threat Assessment", U.S. Geological Survey, Accessed October 22, 2022. pubs.usgs.gov/sir/2018/5140/s...
0:00 Magma Intrusion
0:35 Earthquake Activity
2:18 Mount Spurr's "Plumbing"
3:35 Comparison to Other Episodes
3:57 Opinion Based Rating
Thanks as always, Geology Hub.
Thanks for all of your hard work man!
Thank you for your consistant volcanic reporting.
🎖🎖🎖🎖🎖🎖🎖
I cannot emphasize enough how much I love your videos
He's right. You fill our volcano-obsession perfectly.
Volcanologist 1: “How’s Mt Spurr today?”
Volcanologist 2: “Great, nothing concerning noted on the instruments.” Sips coffee
Volcanologist 1: “Check the calibrations just to be safe and get back to me.” Also sips coffee
Volcanologist 2 checks calibrations and realizes there a problem…
Volcanologist 1: “So, how did the calibrations check out?”
Volcanologist 2: “So yeah, ummm about what I said this morning…”
They make concerning eye contact.
"Its okay, it may or may not indicate that its going to erupt. So theres no cause for concern, but we should be concerned a bit. Maybe."
Bravo!
Initially I was quite concerned as I plan to be in Anchorage in the next 45 days.
I'll be up there in just under 2 weeks. I'm not worried.
Eh don’t be worried. Its current volcanic unrest is quite weak. Hence why it still has a green alert level! (The lowest level)
@@GeologyHub Redoubt burped a couple times when I was living there. I had a respirator just in case I need to walk to work. Cook inlet is large enough that most dangerous stuff wouldn't make it to Anchorage, so ash is the only thing to really plan for.
I miss when you would say "thanks for watching"
It's okay Alaska is just sensing the foretold visit of Goddess Sogno (it's me, I'm Sogno. Visiting AK in a month. LOL). Obvs wouldn't want this one to blow due to its proximity to Anchorage. Thanks for the information!
@GeologyHub
Nice info as usual, I am not surprised considering that Mt Spurr is still active volcano. It'd be matter of time before that volcano erupts, really.
May I suggest an another volcano for your next video? It would be nice to see something from Australia for once, so how about that McBride Volcanic Province in northern part of Australia? It has produced recent volcanic eruption at 7,000 years ago for a big lava flow.
If I remember right the last Mr. Spurr eruption had a pretty big impact on air travel because of it's location and the number of flights between North America and the far east.
Thanks you gathered a lot more information than i did but i figured it was normal.. in 92 it took something like 10 months to build up then 3 separate explosions. In about 3 months.
Thanks for the update
Let me preface this with "I don't know nothing about nothing. What I write is worth a grain of salt in the dead sea.
When we say the magma at depth does not appear to be volatile due to how the earthquakes are presenting, I have to ask about pressure. Specifically you pointed out that the magma chambers are abnormally deep - 35km deep. Would the pressures at depth affect how volatile magma acts in a seismic sense? Because if the average density of the Earth's crust is 2600kg/m3 (Water being 1,000kg/m3) then the "ambient" pressures at depth (20-35km) would range from 73,000PSI to 130,000PSI. Similar to our favorite pressurized fizzy drinks, would gasses not be fully dissolved in the fluid, even despite the high temperatures? This poses the question of if we can really assume the magma volatility in such a deep chamber, especially with the volcano in question having mostly produced large explosive eruptions over its history. (Source: Alaska Volcano Observatory)
By all means if I am wrong I am wrong, but either way I get to learn about something that I thought was neat. 👉😎👉
Crater peak has been the historical locations of Spurs eruptions for the last several thousand years but after its last eruption the activity has moved to the historically inactive main peak which sits in a ancient dome collapse and now holds a massive glacier. Large flank eruption could possibly dam Chakachatna lake. If so it would only take a 200’ to 300’ rise to change the flow of the Chakachatna river into the Skwentna river, which flows into the Yentna River and then the Susitna river. This increased flow easily has the potential to destroy 100s of homes.
Off topic
I live in northern Utah. I am curious if you have any insight of the swarm of mini earthquakes less than 2.5 magnitude near 15 km SW of Thatcher, Utah?
I drive near there for work. Sometimes, I thought I smelled sulfur
I wonder what *Spurr*ed all of this on~
Would this methane be being releasing from 'drying' clathrates? I'm had thought clathrates needed submarine depths but...
Ty!
I still hope you do the flynns lick impact crater in TN i got some pictures of the area
I'm in TN what is the flying lick impact crater?
@@ambermcdaniel2119 it's a impact crater from around 350 million years ago I can't be sure I haven't been to it in a little while it's a nice area
@@ambermcdaniel2119 it's in Jackson Co tn you can see where the rocks shot up at angles
You’re the reason why I’m still alive
Kind of weird volcano updates who am I to say John Michael Gaultier favorite things to listen to before I fall asleep
@@zachtaylor8558I’m happy when he posts
That would be quite ironic if it had erupted during the equipment failure.
Yey! Boom! 😅
Is it me ore does the USGS explanation of the earthquakes sound like a non-answer.
It's just you.
It’s not a non-answer. It’s highlighting that there is uncertainty. Just because there is magmatic activity occurring doesn’t mean there will be an eruption soon or at all.
The answer is largely dependent on the specific volcano in question.
Volcanoes aren't super simple to predict. If USGS has no result to give, they can only provide information they have
If someone predicts something with full certainty and doesn't tell you their doubts they are lying to you. Science is rarely dramatically conclusive
Normally Mnt Spurr burps an farts on a Dalit basis?
Yes. Further down the inlet, I've watched Redoubt,Illiama with wisps of smoke above them over the last few years. I have photos and footage.
This video talks about the instruments being dead for a while so they're just catching up to its baseline. So perhaps they're on to something. I don't think any agency is going to be proud of the fact that they let their instruments go dead and then suddenly there's an eruption!
Get your car covers on, face masks and umbrellas out just in case!
I don't picture Alaska or any geography made with gentle winds.
Just because we moved here doesn't mean it's going to stop!
Be well.
Yes, like an untouchable dalit with leprosy.
Try not to do predictions and prognostications. You will end up with volcanic ash on face Thanks for the continous updates. Greg. 😊.
My. St. Helen’s Is A Super Volcano
First
For those who want to say first early
Congratulations! Here's a cookie. 🍪
LOL
It will be around September when it might go off during the planetary alignment.
Zero chance of eruption
It's never zero, but it appears to not be very severe 😅
Can’t stand listening to this guy.
It's a person in the spectrum, If your small mind can't handle it mute and read the subs.