Volcanoes
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Attention

Mud volcano erupts in southern Taiwan

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Papua New Guinea volcano erupts sending smoke 50,000 feet into the air

Ash column rises from Mount Ulawun, as seen from an aeroplane window, Papua New Guinea November 21, 2023, in this picture obtained from social media.
Ash column rises from Mount Ulawun, as seen from an aeroplane window, Papua New Guinea November 21, 2023, in this picture obtained from social media.
A volcano in Papua New Guinea erupted on Monday, and the Japan Meteorological Agency said it was assessing a possible risk of a tsunami for Japanese coasts.

Mount Ulawun on the island of New Britain in Papua New Guinea erupted at around 3:30 p.m. (0630 GMT) Monday, spewing volcanic smoke as high as 15,000 meters (50,000 feet), the agency said, quoting the Volcanic Ash Advisory Center in Darwin, Australia.

The agency said it was assessing a possible impact, including the risk of a tsunami approaching Japan later Monday. First tsunami waves could reach Izu and Ogasawara islands about three hours after the shaking caused by the eruption, JMA said.


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Mount Dukono in Indonesia erupted and sprayed ash 2 kilometers high

The eruption of new material as high as approximately 1,000 meters came out of the crater of Mount Dukono on Halmahera Island, North Maluku, Sunday (19/11/2023).
© ANTARAThe eruption of new material as high as approximately 1,000 meters came out of the crater of Mount Dukono on Halmahera Island, North Maluku, Sunday (19/11/2023).
The Center for Volcanology and Geological Hazard Mitigation (PVMBG) recorded an eruption in the form of volcanic ash bursts as high as 2 Kilometers out of the crater of Mount Dukono in North Maluku. Mount Dukono Observation Post officer Bambang Sugiono in a report quoted by ANTARA, Sunday 19 November, said the eruption occurred at 07.24 WIT.

"The ash column was observed to be white, gray to black with thick intensity to northeast and east. When this report was made, the eruption was still ongoing," he said. Bambang appealed to tourists not to be active, climbing, and to approach the Malumpang Warirang Crater within a two-kilometer radius.

He also appealed to the community around Mount Dubono to always provide a mask or covering of the nose and mouth to avoid the threat of volcanic ash on the respiratory system. The Dukono Mountain which has a height of 1,335 meters is currently at Level II or Alert status. The closest settlement is at a distance of 11 kilometers from the peak of the volcano.


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This week in volcano news: Iceland volcano update, Dukono & Etna erupt

Mount Etna, Europe's most active volcano,
© Giuseppe Di Stefano & Marco RestivoMount Etna, Europe's most active volcano, lights up the night sky with eruptions as seen from Mount Salto Del Cane, Italy November 12.
Due to the ongoing volcanic unrest in Iceland, three other notable volcano related news stories were largely overlooked. As, Mount Etna in Italy produced a stunning paroxysm, while in Indonesia, the Dukono volcano produced its largest eruption in nearly a decade.

Meanwhile, in Hawaii, earthquakes temporarily propagated further down Kilauea's southwest rift zone. And, in Iceland, magma reached shallow depths at the Reykjanes volcano, leading to the complete evacuation of the town of Grindavik. This video will discuss these stories and list the 46 volcanoes which are actively erupting around the planet.

Thumbnail Photo Credit: Mr. Bambang Sugiono, Used with Permission. This photo of the Dukono volcano was cropped, mirrored veritcally (left became right & right became left), sharpened image, increased image contrast, increase image brightness.

A special thanks to Boris Behncke for allowing me to use two of his video's showing Mount Etna's recent eruptive activity.


Attention

Washington volcano Mount St. Helens is 'recharging', 50 small earthquakes recorded in 1 week

st helens
More than 400 earthquakes have been detected beneath the surface of the volcano in recent months. There have been more than 2,000 earthquakes recorded at the site since 2010
Mount St. Helens is starting to rumble again in Washington with a spike in seismic activity recorded at the volcano more than four decades after its deadly eruption.

More than 400 earthquakes have been detected beneath the surface of the volcano in recent months. There have been more than 2,000 earthquakes recorded at the site since 2010.

Specialized equipment has detected that magma has been flowing through chambers deep underground, causing the volcano to recharge.

There are fears the earthquakes could lead to another massive explosion reminiscent of 1980s eruption that left 57 people dead and permanently altered the area's ecosystem.

Comment: This is particularly notable because it comes amidst a spike in volcanic and seismic activity elsewhere: Also check out SOTT radio's:



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New study reveals evidence of recurring ancient supereruption

The Marsili Basin
© Geology (2023). DOI: 10.1130/G51198.1(A) The Marsili Basin lies in ~3000 m water depth in the Tyrrhenian Sea. Ocean Drilling Program Leg 107 Sites 650 and 651 marked as red circles. Red box shows map in (B). Campi Flegrei (CF) fields (source of 39.8 ka Campanian Ignimbrite and 14.9 ka Neapolitan Yellow Tuff) shown with nearby submarine canyons (Dohrm [DC] and Magnaghi [MC]) as yellow lines. Ve—Vesuvius; SC—Stromboli Canyon. (B) CHIRP subbottom profiles shown as white dashed lines. Continuous white lines involved the acquisition of additional airgun seismic data. Bathymetry is a merged dataset of a 40-m grid CHIANTI multibeam bathymetry together with EMODNET bathymetry. Contour interval is 1000 meters.
Researchers have discovered a series of large undersea sediment deposits in a region near Italy that were likely formed by an ancient volcanic supereruption.

These deposits, known as megabeds, were found in the western Marsili Basin, an area at the bottom of the Tyrrhenian Sea that surrounds the Marsili Seamount, a large undersea volcano.

By combining geophysical data acquired from a Spanish research project and data from sediment cores collected from a nearby Ocean Drilling program site, scientists were able to show that three deposits are made up of alternating beds of volcaniclastic sand and mud, while the fourth is a volcaniclastic debris flow, a more dense mixture of volcanic sediment and water.

The study's findings, published in the Journal Geology, suggest that these structures were deposited during a volatile time when the Campi Flegrei caldera and the Neapolitan Yellow Tuff supereruption were active.

The new study suggests that these megabeds originated not from nearby volcanoes, but from a volcanic province to the north. That province, researchers think, was an area once near the Campanian Ignimbrite (CI) supereruption of Campi Flegrei, the largest one of its volcanic eruptions since the caldera's formation nearly 50,000 years ago.

This still volcanically active region could pose immense danger in the future, said Derek Sawyer, lead author of the study and an associate professor of earth sciences at The Ohio State University. The discovery of these previously unknown megabeds is pivotal for understanding and measuring the impact of such recurring geohazards over time.

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Eruption fears as Iceland's Grindavik residents given five minutes to go home amid earthquakes

crack road earthquake iceland volcano
© XEarth tremors have cracked a road in the center of Grindavik, Iceland, November 11, 2023
Seismic activity in area around Grindavik has 'increased significantly' in Iceland as eruption is predicted

Authorities in Iceland have declared a state of emergency as the threat of an "imminent" volcanic eruption which "could obliterate the entire town of Grindavik" loomed.

The Icelandic Met Office experts have said a volcanic eruption could last 'for weeks' as 30,000 earthquakes have been recorded since seismic activity began three weeks ago.

Matthew James Roberts, managing director of the service and research division at the Iceland Met Office, told Radio 4's Today Programme: "This would be a lava-producing volcanic eruption along a series of fissures and that would be the main hazard.

"Blowing lava an eruption that persists for weeks possible and that means roads and other forms of infrastructure could be eventually in harm's way."

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Intense eruptive activity starts at Italy's Mount Etna

Intense eruptive activity starts at Italy's Mount Etna
Intense eruptive activity starts at Italy's Mount Etna
Intense eruptive activity started at the Mt. Etna, located in Italy's Sicily, local media reported on Monday.

As the volcanic clouds created by the explosions in the mountain have reached an inestimable height, the National Institute of Geophysics and Volcanology (INGV) issued a red code for aviation, noted the public broadcaster Rainews.

INGV announced that a network of surveillance cameras had revealed an increase in Strombolian activity at the southeast crater, accompanied by a lava overflow from the southeast saddle.

From the forecast model of volcanic ash dispersal, the simulation of the eventual dispersion of the volcanic plume indicates an east-southeast direction, it added.

Mount Etna, 3,357 meters (11,014 feet) in height, is one of the world's most active volcanoes and is in an almost constant state of activity.


Info

Best of the Web: Underwater volcanic eruption gives birth to new island in the Pacific

A volcanic eruption off Iwo Jima in the Pacific Ocean on Oct. 30 led to the formation of a 330-foot-wide island just north of the explosion site.
New Land
© The Asahi Shimbun via Getty ImagesEarth and sand are sent into the air above a new islet that appeared after a volcanic eruption off the coast of Iwo Jima.
An underwater volcanic eruption on Oct. 30 has birthed a new island in the Pacific after the explosion flung huge chunks of rock into a pile off the coast of Japan's Iwo Jima island.

An aircraft belonging to the Japanese newspaper Mainichi Shimbun spotted the first signs of an eruption in the southern part of the Izu-Ogasawara arc, roughly 750 miles (1,200 kilometers) south of Tokyo, around midday local time. Explosions occurred every few minutes as red hot magma hit water below the surface, throwing large blocks of rock more than 160 feet (50 meters) into the air, according to a translated statement.

The eruption breached the ocean surface in at least two locations, researchers at the University of Tokyo said in the statement, with explosions occurring only off the southernmost tip of Iwo Jima. Rocks also piled up north of the explosion site, however, forming a round and rugged island about 330 feet (100 m) across. Waters surrounding this new island were discolored and littered with pumice, a type of extremely porous rock that forms during explosive volcanic eruptions.

"Floating pumice and discolored water occur from the entire periphery of the island, suggesting that magma is erupting from this location," researchers wrote in the statement. Rocks on the island formed a concentric pattern, they noted, but there was no sign of a crater on the surface.

Several underwater eruptions have been recorded in this region in recent years. Known as phreatic eruptions, these events are characterized by explosions of steam and volcanic material at the surface. They are triggered when water comes into contact with sizzling magma, lava, rocks or other scalding deposits.

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Eruption at Popocatepetl volcano in Mexico

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