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kladner 2019-05-16 23:00

Technotronic, Volcanics, and related Geology
 
2 Attachment(s)
I have a long-running fascination with volcanoes. Recently, I have been doing a lot of reading on the subject, and collecting interesting web sites at the same time.

Just now, I was reading about Kick 'em Jenny. It is a very active submarine volcano in the Caribbean near Grenada, which puts it fairly close to chalsall's home on Barbados. This prompted me to start this thread.

[URL]https://www.google.com/maps/place/Kick+'em+Jenny/@15.9510009,-72.2000094,6z/data=!4m5!3m4!1s0x8c386b32e892154b:0x7d20e273f3f1e6f3!8m2!3d12.3!4d-61.64[/URL]

[URL]https://geology.com/volcanoes/kick-em-jenny/[/URL]
In the first image, Kick 'em Jenny is #2. It is part of a group which includes Kick 'em Jack at #3. The second image shows that Kick 'em Jenny is in the area of an earlier flank collapse. The volcano which collapsed probably extended above the ocean, as the debris field extends for miles across the ocean floor. These collapses are one cause of large tsunamis.

Nick 2019-05-17 07:36

1 Attachment(s)
Next time you are in Europe, go up mount Etna on the island of Sicily.
Unlike Vesuvius, which plays dead, once you are high enough you can hear Etna rumble at you every few minutes!
[ATTACH]20356[/ATTACH]

kladner 2019-05-18 05:32

[QUOTE=Nick;516983]Next time you are in Europe, go up mount Etna on the island of Sicily.
Unlike Vesuvius, which plays dead, once you are high enough you can hear Etna rumble at you every few minutes!
[ATTACH]20356[/ATTACH][/QUOTE]
I can only hope to make such a trip someday. As long as I am hoping, I would throw in Hawaii and Iceland.

Nick 2019-05-18 08:09

[QUOTE=kladner;517065]I can only hope to make such a trip someday. As long as I am hoping, I would throw in Hawaii and Iceland.[/QUOTE]
Wow, that would be some trip!



As a result of volcanic activity, part of the ancient Roman spa town of [URL="https://en.wikipedia.org/wiki/Baiae"]Baiae[/URL] is now underwater.
People dive down and see stone statues in the old streets.

kladner 2019-05-18 16:13

Baiae is associated with the [URL="https://en.wikipedia.org/wiki/Phlegraean_Fields"]Phlegraean Fields[/URL] (Italian: Campi Flegrei), a volcanic complex across (and under) the [STRIKE]Bay of Naples[/STRIKE] oops, [U]Gulf of Pozzuoli[/U], known for amazing amounts of inflation and deflation, or [URL="https://en.wikipedia.org/wiki/Bradyseism"]bradyseism[/URL]. While the article defines this word fairly literally, that is "slow," the changes in [URL="https://www.google.com/maps/place/Phlegraean+Fields/@40.8285039,14.1054343,13.25z/data=!4m5!3m4!1s0x133b0ee881482ceb:0xc35d65553d4fbc04!8m2!3d40.8333333!4d14.1666667"]Campi Flegrei[/URL] have sometimes been large and rapid.
[URL]https://www.volcanodiscovery.com/campi-flegrei.html[/URL]

[QUOTE]The most recent episodes of uplift ones took place from 1969-72 and 1982-84, when the inhabitants of the area, Pozzuoli in particular, were witness to and victims of a phenomenon where the earth's surface rose; within a few months it had risen by a total of 3.5 m.[/QUOTE]
EDIT above: My bad.
Another link with some good pictures:
[url]https://www.atlasobscura.com/places/phlegraean-fields[/url]
The site above is filled with interesting, and often obscure, topics.

ewmayer 2019-05-20 21:18

May 18th marked the date of the 1980 eruption of Mt. St. Helens. I still recall brushing a fine layer of gray ash off the family car in Ohio, roughly 2000 miles east of the eruption, 3 days later. (One of the cable channels showed the entertaining shlockfest that is [i]Dante's Peak[/i] last Saturday evening, apparently as an anniversary homage. The scene with the spider-legged robot in the movie was filmed inside the crater left by the eruption of St. Helens.)

kladner 2019-05-21 06:36

[QUOTE]I still recall brushing a fine layer of gray ash off the family car in Ohio, roughly 2000 miles east of the eruption, 3 days later.[/QUOTE]
I would recall that, too, if I had noticed. I was in Chicago then, but had no car nor television set. I was aware of the eruption, but have only recognized its intensity much more recently.
[url]https://en.wikipedia.org/wiki/1980_eruption_of_Mount_St._Helens[/url]

Nick 2019-05-25 11:42

Mount Agung is active again: [URL]https://www.news.com.au/travel/travel-updates/mount-agung-volcano-in-bali-indonesia-erupts-flights-cancelled/news-story/52ec6195aaae25a60773804dfbdcfdf6[/URL]

kladner 2019-05-25 22:24

[QUOTE=Nick;517725]Mount Agung is active again: [URL]https://www.news.com.au/travel/travel-updates/mount-agung-volcano-in-bali-indonesia-erupts-flights-cancelled/news-story/52ec6195aaae25a60773804dfbdcfdf6[/URL][/QUOTE]
[URL]https://www.volcanodiscovery.com/agung.html[/URL]

That one threatens a very large nearby population. It killed more than a thousand in 1963.
[QUOTE]The 1963 eruption of Agung volcano
After more than 100 years of slumber, Mt. Agung came back to life on February 18, 1963. Loud noises and a cloud rising from the crater were noticed, then the ejection of bombs and blocks.
On February 24, 1963, highly viscous lava flows began to travel down the northern flank of the volcano, reaching a length of 7 km in about 18 to 20 days and an elevation of 510 m above sea level. The flows were about 0.5-0.8 km wide and 30-40 m thick. Rough estimates indicate a total volume of these flows of about 50 million cubic meters.

After that phase, the eruption became more and more explosive, and on March 17, 1963, the paroxysmal sub-Plinian eruption took place, generating a eruptino column of 8-10 km height that collapsed to form devastating pyroclastic flows. These flows reached distances of up to 15 km from the crater following vallezs to the south and east, at speeds of about 60 km/hour. Many villages were destroyed and more than 1000 people lost their lives. Heavy tephra fall occurred in areas west of the volcano, where up to 50-70 cm of ash were deposited.
In May, the south peak of the crater wall collapsed, lowering its height for about 200 meters. The lowest crater wall at present is the upper end of Langon river (2600 m).[/QUOTE]Currently:
[URL]https://www.express.co.uk/news/world/859280/Bali-volcano-update-Mount-Agung-[/URL][QUOTE]BALI’S Mount Agung volcano is expected to erupt imminently after thousands of earthquakes were recorded, prompting more than [U]140,000 evacuations[/U].[/QUOTE]

Dr Sardonicus 2019-05-26 13:07

[url=https://www.apnews.com/3b12f5abea604f19a5ad36d700d090b1]Magnitude 8 earthquake strikes Amazon jungle in Peru[/url]

xilman 2019-05-26 14:06

When a glacier drops its stuff,
Whether granite or tuff,
That's a moraine.

kladner 2019-05-26 14:20

[QUOTE=Dr Sardonicus;517809][URL="https://www.apnews.com/3b12f5abea604f19a5ad36d700d090b1"]Magnitude 8 earthquake strikes Amazon jungle in Peru[/URL][/QUOTE]
I hope the initial low casualty reports don't increase too dramatically.

kladner 2019-05-26 14:22

[QUOTE=xilman;517812]When a glacier drops its stuff,
Whether granite or tuff,
That's a moraine.[/QUOTE]
Scusa me, but you see this is not Napoli.....

ewmayer 2019-05-26 20:02

[QUOTE=xilman;517812]When a glacier drops its stuff,
Whether granite or tuff,
That's a moraine.[/QUOTE]

Gneiss!

kladner 2019-12-11 03:02

White Island -New Zealand
 
[url]https://www.volcanocafe.org/white-island/[/url]
White Island, in the Bay of Plenty, New Zealand, is the volcano which recently killed some tourists, likely with a steam explosion. The article mentions that the edifice itself is water saturated. Its magma is also very wet and gassy: perfect for explosive eruptions.

[QUOTE]The Bay of Plenty is an evocative name. The Bay is sandwiched between the two northerly peninsulas of The North Island. The name includes the adjacent land region, so this is a Bay you can live in. The geyser of Rotorua is world-renowned. So are the adjacent Taupo volcanoes, although not quite as widely publicised. Too many of the Earth’s [URL="https://www.volcanocafe.org/power-of-the-past-25-super-eruptions/"]largest volcanic eruptions[/URL] of the past million years have come from here, the most recent one around 100 AD. Since humanity arrived here there has been one notably eruption. The region is quiet now without any sign of impending activity. GPS measurements show deflation across the region which is a positive sign for those who like their volcanoes scenically quiet. [/QUOTE]

kladner 2020-01-19 04:21

1 Attachment(s)
I posted this photo in the Catastrophic Earthquake thread, but want to have it here as well.

Necro-edit: This is the inner crater of Taal Volcano, Philippines, circa 2013. The caldera lake is in the distance.

Nick 2020-01-19 10:34

1 Attachment(s)
If you do come to Europe at some point, consider visiting [URL="https://en.wikipedia.org/wiki/Santorini"]Santorini[/URL]
[ATTACH]21643[/ATTACH]
Ships sail into the flooded caldera through one of the gaps in the ring,
and you can go ashore and climb the steps up to the town of Thera with stunning views.
There are currently no signs of volcanic activity above the water, but the Minoan eruption
(about 3600 years ago) was possibly the largest ever recorded.
A [URL="https://en.wikipedia.org/wiki/MS_Sea_Diamond"]cruise ship[/URL] also sank here in 2007 and has never been recovered.
The water is very deep even close to the shore as the sides of the volcano are steep.

kladner 2020-01-19 16:20

[QUOTE=Nick;535504]If you do come to Europe at some point, consider visiting [URL="https://en.wikipedia.org/wiki/Santorini"]Santorini[/URL]
[ATTACH]21643[/ATTACH]
Ships sail into the flooded caldera through one of the gaps in the ring,
and you can go ashore and climb the steps up to the town of Thera with stunning views.
There are currently no signs of volcanic activity above the water, but the Minoan eruption
(about 3600 years ago) was possibly the largest ever recorded.
A [URL="https://en.wikipedia.org/wiki/MS_Sea_Diamond"]cruise ship[/URL] also sank here in 2007 and has never been recovered.
The water is very deep even close to the shore as the sides of the volcano are steep.[/QUOTE]
Santorini is one of those must-see places for the volcano-obsessed. I can only wish. I have never been across the Atlantic.

ewmayer 2020-01-23 20:57

[url=https://www.theguardian.com/world/2017/aug/12/scientists-discover-91-volcanos-antarctica]Scientists discover 91 volcanoes below Antarctic ice sheet[/url] | The Guardian: [i]This is in addition to 47 already known about and eruption would melt more ice in region affected by climate change.[/i]

In addition to the news of the new volcano cluster, highlights an interesting connection between global warming and increasing volcanism:
[quote]Scientists have uncovered the largest volcanic region on Earth – two kilometres below the surface of the vast ice sheet that covers west Antarctica.

The project, by Edinburgh University researchers, has revealed almost 100 volcanoes – with the highest as tall as the Eiger, which stands at almost 4,000 metres in Switzerland.

Geologists say this huge region is likely to dwarf that of east Africa’s volcanic ridge, currently rated the densest concentration of volcanoes in the world.

And the activity of this range could have worrying consequences, they have warned. “If one of these volcanoes were to erupt it could further destabilise west Antarctica’s ice sheets,” said glacier expert Robert Bingham, one of the paper’s authors. “Anything that causes the melting of ice – which an eruption certainly would – is likely to speed up the flow of ice into the sea.

“The big question is: how active are these volcanoes? That is something we need to determine as quickly as possible.”
...
However, he pointed to one alarming trend: “The most volcanism that is going in the world at present is in regions that have only recently lost their glacier covering – after the end of the last ice age. These places include Iceland and Alaska.

“Theory suggests that this is occurring because, without ice sheets on top of them, there is a release of pressure on the regions’ volcanoes and they become more active.”[/quote]

Uncwilly 2020-01-23 21:30

[QUOTE=ewmayer;535813]In addition to the news of the new volcano cluster, highlights an interesting connection between global warming and increasing volcanism:[/QUOTE]And when the overburden of ice is lessened, there is a chance that the weight "cap" on the other volcanoes will come off and pop pop pop.

kladner 2020-02-29 04:16

[QUOTE=Uncwilly;535817]And when the overburden of ice is lessened, there is a chance that the weight "cap" on the other volcanoes will come off and pop pop pop.[/QUOTE]
I can see how rebound could set off a lot of stuff, especially in volcanic-inclined zones.
EDIT: Trading ice for fire.

kladner 2020-05-19 14:33

The Mt Saint Helens catastrophic eruption was 40 years ago, today.

Uncwilly 2020-05-19 14:39

[QUOTE=kladner;545847]The Mt Saint Helens catastrophic eruption was 40 years ago, today.[/QUOTE]I visited the area a number of years ago. Most impressive. Visit Crater Lake and realise that it was a similar mountain before it blew several 1000s of feet of its top off.:shock:

kladner 2020-05-19 15:36

[QUOTE=Uncwilly;545848]I visited the area a number of years ago. Most impressive. Visit Crater Lake and realise that it was a similar mountain before it blew several 1000s of feet of its top off.:shock:[/QUOTE]
Crater Lake, aka Mt Mazama, is a fascinating case study. The caldera walls show quite a number of eruptive conduits.
[url]http://www.craterlakeinstitute.com/[/url]
An amazing amount of eruptive history is described based on the layers of ejecta. The Pacific Northwest is fortunate that the 1980 St Helens eruption did not emulate the Mazama blowout.

xilman 2020-05-19 16:02

[QUOTE=kladner;545847]The Mt Saint Helens catastrophic eruption was 40 years ago, today.[/QUOTE]Sky condition: Black & smelly.

Nick 2021-04-09 15:51

La Soufrière on St. Vincent is erupting.
The website of the local monitoring agency is apparently overloaded.
Their Twitter communications are here:
[URL]https://twitter.com/uwiseismic[/URL]

chalsall 2021-04-10 14:55

[QUOTE=xilman;545854]Sky condition: Black & smelly.[/QUOTE]

Yeah. We're 190 km to the east of Saint Vincent, and it is so dark it is as if it is dusk.

The cats are freaking out! So are some of the humans...

Nick 2021-04-10 17:40

Yes, you're getting the volcanic ash - but not the pyroclastic flows!

xilman 2021-04-10 18:49

[QUOTE=chalsall;575620]Yeah. We're 190 km to the east of Saint Vincent, and it is so dark it is as if it is dusk.

The cats are freaking out! So are some of the humans...[/QUOTE]Were you there back in 1979?

xilman 2021-04-10 18:52

[QUOTE=chalsall;575620]Yeah. We're 190 km to the east of Saint Vincent, and it is so dark it is as if it is dusk.

The cats are freaking out! So are some of the humans...[/QUOTE]Were you there back in 1979?

According to the Beeb "Local media have also reported increased activity from Mount Pelee on the island of Martinique, north of St Vincent."

Those with a knowledge of history might look upon that with interest.

chalsall 2021-04-10 19:04

[QUOTE=xilman;575638]Were you there back in 1979?[/QUOTE]

Nope. I immigrated in 2001.

But friends of mine were. It was, reportedly, amazingly bad!

LaurV 2021-04-11 05:22

[QUOTE=xilman;575638]Were you there back in 1979?[/QUOTE]

[QUOTE=xilman;575639]Were you there back in 1979?[/QUOTE]
Getting old? :paul:
:razz:

xilman 2021-04-11 07:57

[QUOTE=LaurV;575665]Getting old? :paul:
:razz:[/QUOTE]True.

The real reason is that I hit reply, not edit.

LaurV 2021-04-11 08:04

Nope, when you hit reply to your own post instead of edit, you lose the quote. But there is quote inside of both.
You may have hit reply to his post instead hitting edit to your post, but that is a different thing, and anyhow, we believe you are getting older... :razz:

xilman 2021-04-11 12:56

[QUOTE=LaurV;575678]You may have hit reply to his post instead hitting edit to your post[/QUOTE]Exactly what I did. Hit reply instead of edit.

Dr Sardonicus 2021-04-11 17:57

[url=https://apnews.com/article/caribbean-kingstown-volcanic-eruptions-79e3ee67522c30056ddeb5689c78ab82]More volcanic eruptions on Caribbean island of St. Vincent[/url][quote]KINGSTOWN, St. Vincent (AP) - Conditions worsened on Sunday at a volcano on the eastern Caribbean island of St. Vincent as loud rumbling, lightning and heavy ashfall were observed and residents reported power cuts.
<snip>
Elford Lewis, a 56-year-old farmer who evacuated his home on Sunday morning, said the ongoing eruption is worse than the last big one in 1979.

"This one is more serious," said Lewis, who witnessed the big eruption decades ago.
<snip>[/quote]

Dr Sardonicus 2021-04-12 13:16

[url=https://apnews.com/article/caribbean-coronavirus-pandemic-explosions-evacuations-2c26166fa05e0ec6840669972ea1aaf0]'Huge' explosion rocks St. Vincent as volcano keeps erupting[/url][quote]KINGSTOWN, St. Vincent (AP) - La Soufriere volcano fired an enormous amount of ash and hot gas early Monday in the biggest explosive eruption yet since volcanic activity began on the eastern Caribbean island of St. Vincent late last week, with officials worried about the lives of those who have refused to evacuate.

Experts called it a "huge explosion" that generated pyroclastic flows down the volcano's south and southwest flanks.

"It's destroying everything in its path," Erouscilla Joseph, director of the University of the West Indies' Seismic Research Center, told The Associated Press. "Anybody who would have not heeded the evacuation, they need to get out immediately."
<snip>
Richard Robertson, with the seismic research center, told local station NBC Radio that the volcano's old and new dome have been destroyed and that a new crater has been created. He said that the pyroclastic flows would have razed everything in their way.

"Anything that was there, man, animal, anything...they are gone," he said. "And it's a terrible thing to say it."

Joseph said the latest explosion is equivalent to the one that occurred in 1902 and killed some 1,600. The volcano last erupted in 1979. Ash from the ongoing explosions has fallen on Barbados and other nearby islands.[/quote]

chalsall 2021-04-12 20:11

[QUOTE=Dr Sardonicus;575766][url=https://apnews.com/article/caribbean-coronavirus-pandemic-explosions-evacuations-2c26166fa05e0ec6840669972ea1aaf0]'Huge' explosion rocks St. Vincent as volcano keeps erupting[/url][/QUOTE]

Yeah. Bloody annoying...

Our house has flat roofs and many inaccessible ledges. Spent a good part of yesterday sweeping, shop-vacuuming, and power-washing the very fine dust. Only to have to do it all over again today...

I'm almost expecting locusts next...

PhilF 2021-04-12 22:47

[QUOTE=chalsall;575790]Yeah. Bloody annoying...

Our house has flat roofs and many inaccessible ledges. Spent a good part of yesterday sweeping, shop-vacuuming, and power-washing the very fine dust. Only to have to do it all over again today...

I'm almost expecting locusts next...[/QUOTE]

I hope you're keeping that dust out of your lungs... :ick:

chalsall 2021-04-12 23:20

[QUOTE=PhilF;575803]I hope you're keeping that dust out of your lungs... :ick:[/QUOTE]

Yeah... Happen to have a good supply of N95 masks in inventory... :smile:

The biggest issue at the moment is no "mains" water. Have backup reserves, of course, but hauling water up two flights of stairs is not my idea of fun... :sad:

Dr Sardonicus 2021-04-13 15:26

[QUOTE=chalsall;575790]Yeah. Bloody annoying...

Our house has flat roofs and many inaccessible ledges. Spent a good part of yesterday sweeping, shop-vacuuming, and power-washing the very fine dust. Only to have to do it all over again today...[/quote]IIRC, you collect rainwater. I'm guessing that having dust on the roofs would be bad for that. Of course, the weight of a [i]lot[/i] of dust and ash would collapse the roof.

But geez, using up water to clean the roof, all I can say is, I hope the volcano quiets down and you get some rain soon. [Google Google] Hmm, it seems you're most of the way through the dry season...[quote]I'm almost expecting locusts next...[/QUOTE]Don't worry. The frogs will eat them.

xilman 2021-04-13 15:36

[QUOTE=Dr Sardonicus;575835]Don't worry. The frogs will eat them.[/QUOTE]
Locusts make good human food too.

I speak from experience.

Nick 2021-04-14 21:43

Does anyone know yet how long this eruption is likely to last?
Should we be thinking in days or months?

Uncwilly 2021-04-14 21:54

Likely months.
0.1< x < 100

Nick 2021-04-14 22:21

The 2nd photo on [URL="https://earthobservatory.nasa.gov/images/148176/eruption-at-la-soufriere"]this NASA page[/URL] shows how badly Barbados is getting it.

chalsall 2021-04-14 23:05

[QUOTE=Nick;575920]The 2nd photo on [URL="https://earthobservatory.nasa.gov/images/148176/eruption-at-la-soufriere"]this NASA page[/URL] shows how badly Barbados is getting it.[/QUOTE]

Yup... :sad:

I've now burnt out a shop-vac, destroyed a hair-drier (drop it on my toe while blowing dust; the impeller exploded), and just finished a day of hauling water up to the roof to feed a pressure-washer.

And I'm only about 30% complete! Then the second story needs to be processed, and then the ground floors...

chalsall 2021-04-15 00:08

Photos of ash...
 
2 Attachment(s)
So, someone asked to see what all this ash looks like...

Dr Sardonicus 2021-04-15 15:02

[QUOTE=chalsall;575922]So, someone asked to see what all this ash looks like...[/QUOTE]Ugh. That almost looks like enough to warrant starting with a shovel. A grain scoop works pretty well for shoveling snow off a flat roof. Of course, snow you can just throw over the edge. I'm not sure how to get the ash down to the ground. A chute, perhaps?

tServo 2021-04-15 15:08

[QUOTE=chalsall;575921]Yup... :sad:

I've now burnt out a shop-vac, destroyed a hair-drier (drop it on my toe while blowing dust; the impeller exploded), and just finished a day of hauling water up to the roof to feed a pressure-washer.

And I'm only about 30% complete! Then the second story needs to be processed, and then the ground floors...[/QUOTE]

Have you considered using a leaf blower? Are they even available ( with a potential huge demand )?

Nick 2021-04-16 18:12

[URL="https://earthobservatory.nasa.gov/images/148190/tracking-la-soufrieres-plume"]New article from NASA[/URL]

xilman 2021-04-16 20:16

Anyone else seen this?

[url]https://twitter.com/PlatformAdam/status/1382429933373431816/photo/1[/url]

The SO[sub]2[/sub] plume reaches the Arabian peninsular.

Nick 2021-04-16 21:35

[QUOTE=xilman;576019]The SO[sub]2[/sub] plume reaches the Arabian peninsular.[/QUOTE]
Might that have started before the big eruption?

chalsall 2021-04-18 15:49

[QUOTE=tServo;575958]Have you considered using a leaf blower? Are they even available ( with a potential huge demand )?[/QUOTE]

If I had one, I would have used it! The power-washer ended up being the best available tool on hand. Also, rather than just throwing it up in the air to fall somewhere else, it turned the ash into a wet-cement-like sludge that could be scooped up and placed on plant beds and worked into the soil so it didn't blow around.

I understand from friends that every shop-vac, leaf blower, and power washer was sold out by approximately 0801 hours the day after the first eruption. And such kit is rarely air-shipped; resupply is at least a month away.

This is having a massive impact on Barbados; it's going to take months to clean up. I can't even begin to imagine what the St. Vincentients are going through!

The gods have a weird sense of humor... :sad:

xilman 2021-04-19 11:13

[QUOTE=chalsall;576133]The gods have a weird sense of humor... :sad:[/QUOTE]

Quos Deus vult perdere, prius dementat.

Nick 2021-09-19 15:14

Eruption on La Palma:
[URL]https://www.abc.es/espana/canarias/abci-volcan-palma-intensifica-actividad-terremoto-magnitud-42-superficie-202109191327_noticia.html[/URL]

We hope xilman and everyone there are OK!

xilman 2021-09-19 16:42

[QUOTE=Nick;588174]Eruption on La Palma:
[URL]https://www.abc.es/espana/canarias/abci-volcan-palma-intensifica-actividad-terremoto-magnitud-42-superficie-202109191327_noticia.html[/URL]

We hope xilman and everyone there are OK![/QUOTE]We are fine and enjoying a ringside seat. It is about 5km due south of here. Lots of smoke visible from here but the low-level red bits are hidden by the ridge to the south. Noise sounds like a military jet engine off in the distance. About 300 people evacuated so far.

Local and Spanish national TV news stations are reporting nothing else.

Images and/or video later.

Brian-E 2021-09-19 17:11

Great to hear you're okay Paul. Hope it's a wonderful spectacle.

xilman 2021-09-19 18:38

1 Attachment(s)
[QUOTE=Brian-E;588187]Great to hear you're okay Paul. Hope it's a wonderful spectacle.[/QUOTE]How about this one?

xilman 2021-09-19 18:42

[QUOTE=xilman;588195]How about this one?[/QUOTE]That was taken within 5 minutes of the eruption starting.

The smoke pillar was much bigger and darker in colour after 20 minutes or so. Now just a grey cloud with no obvious movement but still a continuous roaring nose from outside.

About 3000 people evacuated so far.

Nick 2021-09-19 19:41

[QUOTE=xilman;588195]How about this one?[/QUOTE]
Impressive - and the noise must also be quite unnerving!
Let's hope your dome remains ash-free.

Nick 2021-09-19 19:45

The English language press now has the story too:
[URL]https://www.bbc.com/news/av/world-europe-58618487[/URL]
The weather forecast is for a light northerly wind.

xilman 2021-09-19 20:05

[QUOTE=Nick;588197]Impressive - and the noise must also be quite unnerving![/QUOTE]Not really.

I grew up in areas with traffic noise which was comparable.

xilman 2021-09-21 14:41

Bortle 9
 
1 Attachment(s)
This is what the southern sky looked like on Sunday evening. It was pretty much the same last night.

Dr Sardonicus 2021-09-21 16:39

[QUOTE=xilman;588333]This is what the southern sky looked like on Sunday evening. It was pretty much the same last night.[/QUOTE]So, "seeing" is bad due to a case of Spanish flue...

Uncwilly 2021-09-21 18:37

[QUOTE=Dr Sardonicus;588342]So, "seeing" is bad due to a case of Spanish flue...[/QUOTE]I see what you did there.
:jokedrum:

Till 2021-09-22 13:39

Here is an interesting site about the lava flows:
[URL]https://elpais.com/ciencia/2021-09-20/volcan-de-la-palma-por-donde-se-espera-que-avancen-las-lenguas-de-lava-hacia-el-mar.html[/URL]

On my stay last year I had a bungalow in Dos Pinos. That's only 2-3 km from the current lava flows and on the edge of the risk zone.

Till 2021-09-22 14:05

Pictures:
[url]https://elpais.com/elpais/2021/09/19/album/1632064004_129260.html[/url]

xilman 2021-09-23 12:08

[QUOTE=Till;588397]Here is an interesting site about the lava flows:
[URL]https://elpais.com/ciencia/2021-09-20/volcan-de-la-palma-por-donde-se-espera-que-avancen-las-lenguas-de-lava-hacia-el-mar.html[/URL]

On my stay last year I had a bungalow in Dos Pinos. That's only 2-3 km from the current lava flows and on the edge of the risk zone.[/QUOTE]I'm back in the UK now and trying to catch up on the news, so thanks for this link. Our place is just off the top of that map.

[url]https://www.google.com/maps/place/Tacande+Observatory/@28.6276112,-17.9063977,12905m/data=!3m1!1e3!4m5!3m4!1s0xc6bf270516a1d01:0xbf7e5b7c4f8806bd!8m2!3d28.6420422!4d-17.8676715[/url] shows both my observatory the site of the eruption. The position is now much more accurate since I sent in an edit to Google Maps. Previously it was about 10km too far south.

xilman 2021-09-23 12:14

[QUOTE=Till;588398]Pictures:
[url]https://elpais.com/elpais/2021/09/19/album/1632064004_129260.html[/url][/QUOTE]Thanks.

We have been following it at [url]https://www.eldiario.es/canariasahora/lapalmaahora/sociedad/[/url]

Not as many pictures but good local news coverage.

xilman 2021-09-23 12:22

[QUOTE=Till;588397]Here is an interesting site about the lava flows:
[URL]https://elpais.com/ciencia/2021-09-20/volcan-de-la-palma-por-donde-se-espera-que-avancen-las-lenguas-de-lava-hacia-el-mar.html[/URL]

On my stay last year I had a bungalow in Dos Pinos. That's only 2-3 km from the current lava flows and on the edge of the risk zone.[/QUOTE]The lava crossed the LP2, the main road on the west of LP a couple of days ago. That road was being repaired so relatively little damge was caused! The last images I saw showed the LP213 in central Todoque with lava at the very edge of the road. The lava has doubtless moved through the village by now.

Some years ago we stayed at an apartment just behind La Mariposa restaurant which is also on the LP213 further down towards Puerto Naos. Depending on whether the lava flows south or north of Montaña de Todoque they may or may not be destroyed respectively. It seems likely that south is more likely.

It's a fair guess you recognize these places.

Dr Sardonicus 2021-09-23 12:49

[QUOTE=xilman;588465]<snip>
It's a fair guess you recognize these places.[/QUOTE]By name, at least. Sounds like at least one of them may no longer be recognizable by sight :sad:

xilman 2021-09-23 14:11

[QUOTE=xilman;588465]The lava crossed the LP2, the main road on the west of LP a couple of days ago. That road was being repaired so relatively little damge was caused! The last images I saw showed the LP213 in central Todoque with lava at the very edge of the road. The lava has doubtless moved through the village by now.[/QUOTE]Strangely enough, the flow has almost stopped. Now down to 4m per hour. It moved only 15m overnight.

Till 2021-09-23 21:00

[QUOTE=xilman;588465]The lava crossed the LP2, the main road on the west of LP a couple of days ago. That road was being repaired so relatively little damge was caused! The last images I saw showed the LP213 in central Todoque with lava at the very edge of the road. The lava has doubtless moved through the village by now.

Some years ago we stayed at an apartment just behind La Mariposa restaurant which is also on the LP213 further down towards Puerto Naos. Depending on whether the lava flows south or north of Montaña de Todoque they may or may not be destroyed respectively. It seems likely that south is more likely.

It's a fair guess you recognize these places.[/QUOTE]


Yes I do, and I have the same information that the lava has progressed to the centre of Todoque and seems to have stopped there. The restaurant Altamira was one of the last victims in that area so far.

But one should not assume prematurely that the worst is over now. In the 1949 San Juan outbreak, new major magma outlets formed 2 to 3 weeks after the first eruption.

Good luck to you that your home won't get harmed!

Till 2021-09-23 21:04

Possibly the new volcano might get called "Tacande", like your observatory.
[URL]https://www.eldiario.es/canariasahora/lapalmaahora/sociedad/jorge-pais-nombre-apropiado-nuevo-volcan-tacande-la-palma_1_8329647.html[/URL]


Edit: Oh, thats the site you mentioned before. So probably you read that article, too.

chalsall 2021-09-23 21:35

[QUOTE=xilman;588476]Strangely enough, the flow has almost stopped. Now down to 4m per hour. It moved only 15m overnight.[/QUOTE]

Be thankful you didn't have to deal with the ash. Be sorry for those who did have to, along with the molten rock.

I'm very happy to hear your observatory is OK.

I'm expecting locusts next... :wink:

Till 2021-09-24 07:06

Another map that is more up-to-date:
[url]https://twitter.com/CopernicusEMS/status/1441285134955778048/[/url]


Looks as if most (or all?) maps are lagging at least one day behind.

xilman 2021-09-24 08:21

[QUOTE=chalsall;588509]Be thankful you didn't have to deal with the ash. Be sorry for those who did have to, along with the molten rock.

I'm very happy to hear your observatory is OK.

I'm expecting locusts next... :wink:[/QUOTE]I have heard that a light dusting of ash has fallen on my place. So light that the wind blows it off again.

The evidence comes from an all-sky camera operated by the chap who has his observatory a few metres away from mine.

xilman 2021-09-24 08:28

[QUOTE=Till;588541]Another map that is more up-to-date:
[url]https://twitter.com/CopernicusEMS/status/1441285134955778048/[/url]


Looks as if most (or all?) maps are lagging at least one day behind.[/QUOTE]
My place is at the top of the L in La Palma on that map.

xilman 2021-09-24 15:02

[URL="https://www.eldiario.es/canariasahora/lapalmaahora/sociedad/cancelados-vuelos-palma-aeropuerto-nube-cenizas-binter-iberia_1_8335438.html"]Looks like we may have got out just in time.[/URL]

xilman 2021-09-25 11:01

ash fall
 
[url]https://www.eldiario.es/canariasahora/lapalmaahora/sociedad/gasolineras-cuadrillas-limpieza-trabajos-esenciales-falda-volcan-palma_1_8335612.html[/url] has news pictures from sites on the LP3 just up the road from us. We fairly often visit La Cascada restaurant; re-fuel at the Shell gasolinera and have bought quite a lot of stuff from the furniture store when kitting out our new house. We know them well, in other words, including some of their staff.

They have not been evacuated yet ...

pinhodecarlos 2021-09-25 12:20

I suppose they already started thinking in donations to support the locals. Any of your contacts there organising for this? Happy to help.

Lariliss 2021-10-20 10:05

The world of science and technology is vast but still a tight area and 'information field'. Centuries ago a discovery of archaeology, astronomy, physics, technology, works of philosophers and physics was often a stand alone discovery.
Today, looking through the intertwined scientific fields, synchronous discoveries and inspections is not a surprise.
Information sharing, patterns and unbelievable volume of what we have now in exploration, science and technology make them synchronized and more effective with that.
We are closer together in thoughts and deeds than ever before, that's why volcanoes are in the spot for several planets at the same time.
And one more thing, this makes more understanding of the Earth as a part of the Solar system in detail, not separating 'here' and 'somewhere in space'.

Martian volcanoes are similar to the Earth's by their ratios of height and base radius. Interesting similarity for different volcanism: tectonic activities of the Earth, and static volcanoes on Mars.


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