For earthquakes and volcanoes that are not related to the Pacific "Ring of Fire".

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Message 2132412 - Posted: 10 Feb 2024, 19:44:03 UTC

Does Hawaii count as part of the Ring of Fire?
It is within the Ring of Fire. ;-)

Cheers.
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Message 2132454 - Posted: 11 Feb 2024, 16:46:22 UTC - in response to Message 2132412.  

Does Hawaii count as part of the Ring of Fire?
It is within the Ring of Fire. ;-)

Cheers.


But, the topic is not related to the Pacific "Ring of Fire". It is within the ring but it's also not related to the ring. It's a hot spot, not a plate boundary. The ring is composed of plate boundaries.
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Message 2132665 - Posted: 16 Feb 2024, 22:27:38 UTC
Last modified: 16 Feb 2024, 22:34:41 UTC

Iceland, Reykjanes:

https://en.vedur.is/about-imo/news/a-seismic-swarm-started-north-of-grindavik-last-night
Updated 15. February at 16:00 UTC:
Model calculations [...] suggest that magma accumulation from the end of the eruption [...] until yesterday, 14th of February, is about 2 million m3. It was estimated that when the eruption began [...] about 10 million m3 of magma propagated from Svartsengi towards Sundhnúkur crater row. If magma accumulation continues at same rate, a total of 10 million m3 will be accumulated by the end of February or beginning of March, by which time likelihood of dyke propagation and volcanic eruption will increase significantly.
Looks like the same process of magma intrusion followed by dyke propagation and eruption is repeating itself over and over again within ~1.5 months distance. Like in the movie “Groundhog Day". Unfortunately, the history of the Reykjanes Fires of 800 years ago appears to repeat in this century, as mentioned here before. The residents of the evacuated town of Grindavík will probably have to make a very difficult choice at some point: an unpredictable future in their hometown or a completely new beginning somewhere else.
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Message 2132682 - Posted: 17 Feb 2024, 8:38:25 UTC - in response to Message 2132665.  

For many residents of Grindavik the very painful decision has been forced on them. There are so many unrecorded cracks, up/down-lifts across the town their homes have become uninhabitable, so they are moving to other towns. As you say this is going to be painful for them, as some will be moving from a place they've lived in for years (and within walking distance of work) to a not only another town, but no longer within walking distance of work. Friends who live in Iceland say many of the designated building plots to the east of Reykjavik are stating to have foundations laid with new houses due to arrive in a few weeks time - the biggest hurdle is the lack of heating and power connections to these new houses.
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Message 2133970 - Posted: 16 Mar 2024, 21:54:15 UTC

Iceland is at it again, more or less the same place as the last one. Blue Lagoon evacuated, but no roads or pipes cut (yet).
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Message 2134568 - Posted: 5 Apr 2024, 16:29:09 UTC

Was trying to post the following earlier but site was probably feeling the after shock
Magnitude 4.7 earthquake rocks New York City, tri-state area
A rare earthquake shook the New York area Friday morning, rattling parts of the Big Apple, Connecticut and New Jersey.

The preliminary 4.7-magnitude earthquake struck near Lebanon, New Jersey, around 10:23 a.m., according to the US Geological Survey.

Tremors could be felt as far north as New Paltz, New York and as far south as Delaware.
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Message 2134611 - Posted: 6 Apr 2024, 19:28:33 UTC

Mount Etna, Sicily, Italy, having fun.
https://www.bbc.co.uk/news/av/world-europe-68752290
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Message 2136125 - Posted: 22 May 2024, 12:17:21 UTC
Last modified: 22 May 2024, 12:18:22 UTC

The Phlegraean Fields, Naples, Italy, having tremor:

Naples sits on volcanic monsters - and one of them threatens to consume the city
wrote:
They are tremors caused by magma and gases shifting deep underground, and in recent years they have been felt frequently across Naples. On 20 May 2024, the area was shaken by 160 earthquakes, including one with a magnitude of 4.4, the strongest to hit the region in 40 years.

The cause? Beneath the city – and indeed most of the bay – there's an enormous "caldera", a type of volcanic crater that collapsed after a violent eruption thousands of years ago. It's called the Campi Flegrei (Phlegraean Fields), and it is 12-15km wide (7.5-9.5 miles). Unlike Vesuvius, it has no visible cone, and so goes largely unnoticed day-to-day, but with so many people living on top of it, it's considered one of the most dangerous in Europe. One eruption attributed to it 39,000 years ago was so big that some of the material ended up in Siberia.

Kilburn and colleagues interpret this to mean that the volcano is doing something new. If the previous uplifts were benign magmatic intrusions, then this would suggest the recent changes could be gas, he says. And if so, that could mean the volcano is essentially inflating, creating new gaps for magma to push through – and potentially reach the surface. "The crust today is not in the state it was 40-50 years ago," he says. "Whether there's an imminent eruption or not, it's unusual that a volcano does this."
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Message 2136160 - Posted: 23 May 2024, 5:27:41 UTC - in response to Message 2136125.  

The Phlegraean Fields, Naples, Italy, having tremor:

Naples sits on volcanic monsters - and one of them threatens to consume the city
wrote:
They are tremors caused by magma and gases shifting deep underground, and in recent years they have been felt frequently across Naples. On 20 May 2024, the area was shaken by 160 earthquakes, including one with a magnitude of 4.4, the strongest to hit the region in 40 years.

The cause? Beneath the city – and indeed most of the bay – there's an enormous "caldera", a type of volcanic crater that collapsed after a violent eruption thousands of years ago. It's called the Campi Flegrei (Phlegraean Fields), and it is 12-15km wide (7.5-9.5 miles). Unlike Vesuvius, it has no visible cone, and so goes largely unnoticed day-to-day, but with so many people living on top of it, it's considered one of the most dangerous in Europe. One eruption attributed to it 39,000 years ago was so big that some of the material ended up in Siberia.

Kilburn and colleagues interpret this to mean that the volcano is doing something new. If the previous uplifts were benign magmatic intrusions, then this would suggest the recent changes could be gas, he says. And if so, that could mean the volcano is essentially inflating, creating new gaps for magma to push through – and potentially reach the surface. "The crust today is not in the state it was 40-50 years ago," he says. "Whether there's an imminent eruption or not, it's unusual that a volcano does this."

Vesuvius and Campi Flegrei both share the same magma chamber, an Italian super volcano, if it erupts again and the chamber collapses, there will be a lot of dead people there and land will collapse into the chamber.
Savoir-Faire is everywhere!
The T1 Trust, T1 Class 4-4-4-4 #5550, America's First HST

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Message 2136172 - Posted: 23 May 2024, 12:04:16 UTC - in response to Message 2136160.  

Vesuvius and Campi Flegrei both share the same magma chamber, an Italian super volcano, if it erupts again and the chamber collapses, there will be a lot of dead people there and land will collapse into the chamber.
More likely a limited eruption within the large caldera, like the Monte Nuovo eruption of 1538. A complete collapse of the caldera there is very rare in geological times (tens of thousands of years); the impact would probably be a global winter, the local deaths only a forgotten aspect of the global impact. Humanity has no memory of eruptions of such scale as those that have already occurred there more than 10,000 years ago. (significantly more powerful than Tambora in 1815, which was the largest one "witnessed" and known by mankind)
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Message 2136192 - Posted: 23 May 2024, 22:19:29 UTC - in response to Message 2136172.  

Vesuvius and Campi Flegrei both share the same magma chamber, an Italian super volcano, if it erupts again and the chamber collapses, there will be a lot of dead people there and land will collapse into the chamber.
More likely a limited eruption within the large caldera, like the Monte Nuovo eruption of 1538. A complete collapse of the caldera there is very rare in geological times (tens of thousands of years); the impact would probably be a global winter, the local deaths only a forgotten aspect of the global impact. Humanity has no memory of eruptions of such scale as those that have already occurred there more than 10,000 years ago. (significantly more powerful than Tambora in 1815, which was the largest one "witnessed" and known by mankind)

Sigh, Tambora, naturally we have to share the Earth with such monsters.
Savoir-Faire is everywhere!
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Message 2136441 - Posted: 29 May 2024, 12:05:37 UTC

Possible new eruption soon, like today, in Iceland

Iceland Met office says that the Blue Lagoon, and the Grindavik area has been evacuated as at 11:00 UTC (Iceland time). Swarm of tremors in last few hours, nearly a 100 in the last hour https://vafri.is/quake/

Multicam view of the area https://www.youtube.com/watch?v=ukxaqTkfVY8 or https://www.youtube.com/@mbl_is/streams for links to each stream.
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Message 2136442 - Posted: 29 May 2024, 12:38:12 UTC - in response to Message 2136441.  
Last modified: 29 May 2024, 12:40:01 UTC

Possible new eruption soon, like today, in Iceland
It's about time, considering the recent magma accumulation.
(diagram: estimated magma accumulation vs. days since last eruption for all previous eruptions since Oct 2023):
(source)

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Message 2136443 - Posted: 29 May 2024, 12:52:30 UTC

Started within the last 5 minutes.
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Message 2136449 - Posted: 29 May 2024, 14:56:03 UTC

latest news: AP
GRINDAVIK, Iceland (AP) — A volcano in southwestern Iceland erupted Wednesday for the fifth time since December, spewing red streams of lava in the latest display of nature’s power and triggering the evacuation of the popular Blue Lagoon geothermal spa.
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Message 2136501 - Posted: 30 May 2024, 21:11:14 UTC
Last modified: 30 May 2024, 21:12:43 UTC

Seems the protective walls (brown lines) so far were sufficient to divert lava around Grindavík. Recent lava flows in violett; older ones grey-colored (larger version linked). (source)

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Message 2137971 - Posted: 5 Jul 2024, 19:38:46 UTC

Italy has a double act performing.

Mt Etna and Stromboli volcanoes erupt over Italy.

Italy's Mt Etna and Stromboli volcanoes erupted on Friday, spewing hot ash and lava into the skies of Sicily.

Etna, located near Catania on the Italian island's eastern coast, is one of the world's most active volcanoes and has seen intense activity in recent days.

The smaller Stromboli volcano, located on Sicily's northern coast, spilled lava into the sea.

The volcanic ash fall forced a temporary shutdown of Catania Airport on Friday, while Italy's civil protection agency issued a red alert for Stromboli.

Warning the situation could deteriorate, Civil Protection Minister Nello Musumeci said Stromboli was "under surveillance" and authorities were making sure evacuation plans were ready in case of emergency.....
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Message 2139754 - Posted: 23 Aug 2024, 2:04:11 UTC
Last modified: 23 Aug 2024, 2:13:43 UTC

Rift near to Blue Lagoon, Iceland opened at about 21:30 UTC yesterday evening.

Multi-cam view at https://www.youtube.com/watch?v=O9dJzk8IQx4
goto https://www.youtube.com/@mbl_is/streams for specific cameras.

[edit] Good overall view at https://www.youtube.com/watch?v=43ttXiCUOF8
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Message 2139772 - Posted: 23 Aug 2024, 7:30:13 UTC

Magnitude 4.7 earthquake rattles large parts of NSW
A magnitude 4.7 earthquake has rattled New South Wales, cracking windows, causing thousands of power outages and forcing some schools to evacuate.

The quake – initially identified as a magnitude 5.0 before being downgraded twice – hit just before midday near Muswellbrook in the Upper Hunter Valley, 250 kilometres north-west of Sydney.

More than 2,500 people reported feeling the quake to Geoscience Australia from as far away as Coffs Harbour, Sydney and Canberra.

Grant
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Message 2139774 - Posted: 23 Aug 2024, 7:42:35 UTC

2024-08-22 21:26 UTC:


Seems the interval between eruptions increases over time as well as the accumulated amount of magma between:


Source
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Message boards : Cafe SETI : For earthquakes and volcanoes that are not related to the Pacific "Ring of Fire".


 
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