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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 3:21 am 
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"Kīlauea Volcano Summit
Tiltmeters at the summit of Kīlauea Volcano continue to record the deflationary trend of the past several days. Corresponding to this deflationary trend, the summit lava lake level in Overlook crater dropped about 2 m (6.5 ft) per hour during the day. The lake level has dropped an estimated 220 m (722 ft) since the collapse of Puʻu ʻŌʻō crater on April 30."

I think we can all guess where the lava went the last few days.

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 9:55 am 
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Location: In the gurgling maw of the Pacific.
Terraforming for future generations.

I cant help but think about the perspective of early humans when your nice quaint jungle village is ripped open and spews lava. You would tend to think its a punishment from some higher power.


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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 11:03 am 
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Early humans and natives seemed smarter about natural disasters. They didnt make hard infrastructure, they just picked up and moved out of the area. (Too many people means living in more marginal areas)

Thermal map of the vents. What a straight line!

Image

On Saturday, Christina (Tina) Neal, Scientist-in-Charge of the USGS Hawaiian Volcano Observatory, gave a rough timeline of events:

"We know that the Kilauea Volcano plumbing system includes some continuity between the summit magma reservoir which is right below Halemaumau and the rift zone going down as far as lower Puna. So this event began with the collapse of Puu Oo that sent, in a sense, a surge of molten material in the rift zone further down to the lower East Rift Zone.

"Some days after that, the Halemaumau lake started to respond and also recede as material was leaving the summit reservoir and also going down into the rift zone and we see that, based on just visually the lava lake going down, but our instruments are also recording the passage of that molten material in the rift zone, so, yes, the answer is they are connected.

"The additional material coming down the pipeline literally could involve itself at some point and actually lead to more high volume lava flows. We've seen that before historically in 1955, 1960, and other times. So we've been saying from the beginning that even though these are small fissure outbreaks which have enormous impact on Leilani Estates obviously, but we're not seeing big lava flows coming out, yet. But that could be a phase that we move to."


"The additional material coming down the pipeline literally could involve itself at some point and actually lead to more high volume lava flows." I guess thats started to happen with that lava flow on Sunday that traveled half a mile from the fissure.

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 11:23 am 
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Dave's Run
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Neil outlined three possible severe possibilities:

Well again there's a high degree of uncertainty in my answer, but there are possible next phases that are severe and I can give you a couple of them.
[...]
And I think probably the one that we're just getting our heads around now is that if the lava lake drains so deeply that it gets down to the level of the water table, which is 500 to 600 meters below ground surface.

We could have a scenario as such occurred in 1924 where the lava lake drained deeply, there was a large intrusion of magma into the lower East Rift Zone. There was no eruption that we're aware of, but we know a lot of melt went down the pipeline and so this deepening of the magna amount of the summit allowed ground water to flush into the system and when you mix water with 2,000 degree magna, you get explosions.

So in 1924 there was a period of time of explosive activity from the Halemaumau region which put out a lot of ash, a lot of big blocks. They didn't travel outside the current closed zone, but they were certainly a more severe hazard than what we've seen more recently.

That kind of activity went on for many days maybe weeks, but that's another kind of scenario that's more severe than what's happening now.

We've been talking about that and what we're gonna be doing is we've got some geophysicists whose eyes are trained on the data and we're looking for changes in the rate of the lava lake drop. We would expect to see a couple of things, more earthquakes right in the region because the system is going to start adjusting to this build up of steam explosions and we also would expect a little ash explosion start coming up from deep in the column so we think we would have some signals of warning.

Believe me, I'm very interested in this because my laboratory is mile away from there so we'll be watching that for that outcome and at the right time, elevating awareness of that as a possibility.

But we're not there yet and I should also point out that we would expect many days to pass even after the lava lake got to that level before activity would intensify.

That is absolutely something we’re concerned about.


http://www.khon2.com/news/local-news/ge ... 1160945317

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 5:22 pm 
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Cornice Bowl
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Here is a link I thought worthy of sharing
Mother nature flexing her muscles.
This was like 4 hrs ago.

https://www.usatoday.com/story/news/nat ... 586268002/


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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 5:40 pm 
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A new fissure opened up this afternoon.

This guy is posting live updates and amazing videos.

https://www.instagram.com/dbphotogallery/


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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 6:02 pm 
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Just updated interactive County map showing the new fissures.

Image

So just for comparison, on April 27 the lava lake at the summit was actually so full it was overflowing.

Image

And now its drained so much the thermal cam can barely see it down the throat.

Image

I'm starting to wonder if it will indeed drop low enough to have the water table intrude and set up the steam explosions! All that lava must be traveling down to Leilani Estates area since the Pu u Oo lava flow dried up too.

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Mon May 07, 2018 6:05 pm 
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Freerider wrote:
Here is a link I thought worthy of sharing
Mother nature flexing her muscles.
This was like 4 hrs ago.

https://www.usatoday.com/story/news/nat ... 586268002/


Whoever wrote this article immediately lost points with "How unusual is this? The fact that Kilauea is blowing its top ". Its not blowing its top, lava is flowing way out to the east.

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Tue May 08, 2018 5:48 pm 
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2 new eruption sites broke out today (13 & 14), and they were back on the NE end of the chain of fissures. One house was lost. Also there are cracks showing up in the west on Highway 130.

Image

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Wed May 09, 2018 1:09 pm 
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snowhottie wrote:
And I think probably the one that we're just getting our heads around now is that if the lava lake drains so deeply that it gets down to the level of the water table, which is 500 to 600 meters below ground surface.

We could have a scenario as such occurred in 1924 where the lava lake drained deeply, there was a large intrusion of magma into the lower East Rift Zone. There was no eruption that we're aware of, but we know a lot of melt went down the pipeline and so this deepening of the magna amount of the summit allowed ground water to flush into the system and when you mix water with 2,000 degree magna, you get explosions.


Issued: Wednesday, May 9, 2018, 8:02 AM HST
Source: Hawaiian Volcano Observatory
Notice Number:
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4091 ft (1247 m)
Area: Hawaii

Volcanic Activity Summary: The steady lowering of the lava lake in "Overlook crater" within Halemaʻumaʻu at the summit of Kīlauea Volcano has raised the potential for explosive eruptions in the coming weeks. If the lava column drops to the level of groundwater beneath Kīlauea Caldera, influx of water into the conduit could cause steam-driven explosions. Debris expelled during such explosions could impact the area surrounding Halemaʻumaʻu and the Kīlauea summit. At this time, we cannot say with certainty that explosive activity will occur, how large the explosions could be, or how long such explosive activity could continue.

[...]

BACKGROUND

Kīlauea's lava lake began to drop on May 2, 2018. From its peak on May 2 to the most recent measurement at 9 pm on May 6, the lava lake surface dropped a total of more than 200 m (656 ft). The subsidence was at a relatively constant rate of about 2 meters (yards) per hour.

Measurements of subsidence have not been possible since May 6 because of thick fume and the increasing depth to the lava surface. However, thermal images indicate continued lowering of the lake surface since that time, consistent with deflationary tilt recorded at Kīlauea's summit. Therefore, we infer that the lake surface continues to drop at roughly the same rate. So, while HVO cannot report exact depths of the receding lava lake, we can monitor the overall trend.


Its a lot longer, link here: https://volcanoes.usgs.gov/volcanoes/ki ... tatus.html

What happened in 1924: https://volcanoes.usgs.gov/volcanoes/ki ... aumau.html

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Wed May 09, 2018 8:18 pm 
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Afternoon update:

A 3D model of the Overlook crater was created from thermal images collected during an early afternoon helicopter overflight on May 8. Based on the 3D model, the lake level was about 295 m (970 feet) below the floor of Halema'uma'u Crater.


If the lava level keeps dropping at that rate, it will meet and fall below the water table by this weekend.

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Thu May 10, 2018 8:15 am 
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Most of Park Will Close Friday in Anticipation of Possible Explosive Steam Event at Kīlauea Summit

Contact: Jessica Ferracane, 808-985-6018
Media Advisory May 9, 2018

Hawaii National Park, Hawai‘i – Hawai‘i Volcanoes National Park will close Friday due to the possibility of an explosive steam event and ash fall at the summit of Kīlauea Volcano.

Who: Hawai‘i Volcanoes National Park

What: Closure of most of the park. Only the Kahuku Unit will be open during its normal hours, Friday through Sunday, 9 a.m. to 3 p.m.

When: Friday, May 11, 2018 until further notice

Why: Safety. Due to the possibility of a steam-induced explosion at the summit of Kīlauea due to the receding lava lake, an ensuing ash fall event, plus southerly wind patterns forecasted for Friday, the majority of the park will be closed Friday until further notice. We will reopen when it is safe to do so.

Editor’s Note: We will provide more information at the News Media Teleconference call on Thursday, May 10, 11 a.m. Hawai‘i Standard Time.

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Thu May 10, 2018 12:30 pm 
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Thanks y'all for the info and links. Very informative

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Thu May 10, 2018 4:12 pm 
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This is a cool video of one of the ash eruptions from yesterday.
https://www.instagram.com/p/BinVIY8gcPZ/

hawaiipacificparks
HPPA’s Kim also caught this display at the summit of #Kīlauea Volcano yesterday, after some rockfall in the conduit of the retreating #lava lake caused all kinds of drama. This was the view from #Jaggar Museum at our partner @hawaiivolcanoesnps. The park will be closing for safety from Friday, May11, until further notice. #videooftheday #nationalparks #HawaiiIsland #safetyfirst

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 Post subject: Re: Hawaii volcano - drone footage
PostPosted: Thu May 10, 2018 8:27 pm 
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Cow.

Officials are warning that massive boulders could come raining down from the sky near the crater, and they're asking people to be prepared.

"It could be large rocks, it could be boulders the size of cows," said Jessica Ferracane, of the Hawaii Volcanoes National Park.

http://www.hawaiinewsnow.com/story/3815 ... to-the-air

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