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Can Volcanic Gas Levels Predict an Eruption?
EOS ^ | June 12, 2017 | Alexandria Branscomb

Posted on 06/19/2017 1:25:15 PM PDT by JimSEA

Before a volcano erupts, there are usually signs of what’s to come; small earthquakes, heat emission, and ground swelling, to name a few, have all been observed to precede eruptions. Volcanologists also monitor the changing composition of gas emissions at volcanoes in the months leading up to an eruption. However, precursory variations in gas have not yet been verified to occur in volcanoes hosting active lava lakes.

To find out if volcanic gas emissions might also be used to predict eruptions at lava lake–hosting, carbon-poor volcanoes, Aiuppa et al. looked at Chile’s Villarrica volcano. Villarrica towers 2847 meters over the town of the same name; magma bubbles and spatters in an open-vent lava lake at its peak.

In this study, the researchers installed a multicomponent gas analyzer system (Multi-GAS) to bring the volcano into the Deep Carbon Observatory’s Deep Earth Carbon Degassing network. The instrument was placed on the outer rim of the lava lake in November 2014 to record the ratios of carbon dioxide and sulfur dioxide gas emitted from the magma. Magma, which contains dissolved gas, rises toward the surface of the magma chamber. As the pressure decreases on its ascent, the gas bubbles burst at the surface, and the degassed magma sinks back down into the chamber.

(Excerpt) Read more at eos.org ...


TOPICS: Science
KEYWORDS: archiflegreovolcano; aurignacian; campania; campanianignimbrite; campiflegrei; chatelperronian; geology; italy; mousterian; naples; paleolithic; phlegraeanfields; uluzzian; volcano; volcanoes
It seems that variations in the quantity and ratios of gas can predict the eruption of volcanoes. The data gathered in the weeks leading up to the eruption revealed that the magma degassing occurred in three phases. Phase 1 was labeled the background degassing phase, where the gas ratio between carbon dioxide and sulfur dioxide was relatively low. The second phase, starting on 26 January, included wildly fluctuating gas concentrations. Phase 3 exhibited elevated degassing from 6 February until the eruption. Over the three phases, the gas composition coming from the lake became richer in carbon dioxide.

With the interest in Yellowstone currently, this study may be important even though the volcano studied was not as complex as a super volcano would likely be due to drastic differences in the magma pools.

1 posted on 06/19/2017 1:25:15 PM PDT by JimSEA
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To: JimSEA

2 posted on 06/19/2017 1:26:53 PM PDT by Snickering Hound
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To: JimSEA

Seems like common sense...


3 posted on 06/19/2017 1:29:19 PM PDT by Crucial
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To: JimSEA

Can Volcanic Gas Levels Predict an Eruption? Well...it certainly can at my house. Especially on chili night.


4 posted on 06/19/2017 1:40:43 PM PDT by Bloody Sam Roberts (Battleships confide in me and tell me where you are...)
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To: Bloody Sam Roberts

Finished a 16 hour pork butt yesterday at noon.

Wasn’t sure last night if the Yellowstone Caldera was shaking or if it was me...


5 posted on 06/19/2017 1:43:54 PM PDT by BBB333 (The Power Of Trump Compels You!)
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To: JimSEA

NASA is looking into it

NASA wants to probe Uranus in search of gas
http://www.freerepublic.com/focus/f-chat/3561835/posts


6 posted on 06/19/2017 1:45:46 PM PDT by Lurkina.n.Learnin (Willie Sutton went into robbing banks and Hillary Clinton went into politics)
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To: JimSEA

Campi Flegrei. This is the one to watch.

Yellowstone? Nope. Unless there comes a earthquake over 7 in that basin. That might unzip the thing.


7 posted on 06/19/2017 1:46:47 PM PDT by crz
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To: JimSEA

8 posted on 06/19/2017 1:49:54 PM PDT by Vendome (I've Gotta Be Me - https://www.youtube.com/watch?v=wH-pk2vZG2M)
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To: Snickering Hound

I always disliked that picture- she looks like she is letting out a squeaker.


9 posted on 06/19/2017 2:15:08 PM PDT by Mr. K (***THERE IS NO CONSEQUENCE OF REPEALING OBAMACARE THAT IS WORSE THAN OBAMACARE ITSELF***)
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To: JimSEA

I don’t know about volcanic gas but it works with me.


10 posted on 06/19/2017 3:22:47 PM PDT by Old Yeller (Auto-correct has become my worst enema.)
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To: Snickering Hound

“Sexy” Megyn is as appealing as a bucket of aholes.


11 posted on 06/19/2017 3:26:52 PM PDT by Rebelrage ("To crush your enemies -- See them driven, and to hear the lamentation of their women")
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To: BBB333

Finished a 16 hour pork butt yesterday at noon.

Wasn’t sure last night if the Yellowstone Caldera was shaking or if it was me...


I love smoking meat.
Pork butt is wonderful, 16 hours though? Seems a lot, but I don’t think you can do wrong with smoking.
I want to do a briquet on the 4th. I am thinking 12 pounds about 14 hours.


12 posted on 06/19/2017 3:29:41 PM PDT by Wildbill22 ( They have us surrounded again, the poor bastards- Gen Creighton William Abramsp)
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To: Snickering Hound

I swear she looks like a tranny in drag, in that picture.


13 posted on 06/19/2017 4:18:13 PM PDT by BobL (In Honor of the NeverTrumpers, I declare myself as FR's first 'Imitation NeverTrumper')
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To: Snickering Hound

She’s a thoroughly unpleasant person gas eruptions or not.


14 posted on 06/19/2017 4:58:42 PM PDT by JimSEA
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To: crz
I visited Campi Flegrei last Spring. Lots of steam, the earth was hot to the touch, but not much seismic activity currently. Still, you are right, with Vesuvius considered still active, the area is active recently enough. I don't know if the earthquakes in central Italy are related though. Do you?
15 posted on 06/19/2017 5:16:37 PM PDT by hinckley buzzard
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To: hinckley buzzard

No I do not. Havent really paid much attention to that one until these past weeks.

As far as Yellowstone is concerned. These events of the last few years are pretty normal for that system. Will it blow? YUP. WHEN? Dont know. How big? Dont know. But even the latest ones did not do the damage like the doomsdayers are claiming.

I would guess a VEI 5 or something like that and not a super eruption. A tad bigger than St Helens. Maybe something like Tambora in 1815-16 which created havoc all over the world.

These dam freaks and their panic producing web sites..they do this to get hits on their web sites.


16 posted on 06/19/2017 5:34:22 PM PDT by crz
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To: Snickering Hound
Pull mein finger! Image and video hosting by TinyPic Operation Thunder Down Under
17 posted on 06/19/2017 5:40:07 PM PDT by tumblindice ("Fight for your country." Hector)
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To: Wildbill22

I have a kamado style ceramic grill and I smoke at 220.

Have this little helper: https://bbqguru.com/StoreNav?CategoryId=1&ProductId=34

It’s really fantastic.

Have a wonderful brisket!


18 posted on 06/20/2017 4:46:01 AM PDT by BBB333 (The Power Of Trump Compels You!)
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To: BBB333

Mmmmm....BubbaQ. Yum.


19 posted on 06/20/2017 5:44:35 AM PDT by Bloody Sam Roberts (Battleships confide in me and tell me where you are...)
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