Hotspot volcanoes

Experts Discover Pink Pumice as Evidence of the Immense Power of Underwater Volcanoes

Researchers have found that underwater eruptions are far more powerful than originally thought and can blast volcanic rocks through the air at “supersonic speeds” in just seconds. Last month, the Hunga Tonga Hunga Haapai volcano made global headlines, but underwater eruptions were still vastly underestimated. Pink pumice as evidence of a larger eruption? According to […]

Volcanic mountains

An explosive volcanic eruption triggered an hour-long thunderstorm • Earth.com

The January 2020 eruption of the Taal volcano in the Philippines became electrified and caused a thunderstorm lasting several hours, with thousands of cloud-to-ground lightning strikes. A new study conducted by the United States Geological Surveythe National Oceanic and Atmospheric Administration and Vaisala Inc. highlight how advances in global lightning detection may provide new ways […]

Volcanic mountains

Sonic boom, earthquake, tsunami waves: Why Tonga’s volcanic eruption was no easy feat | world news

The eruption of the Hunga Tonga Hunga Ha’apai volcano in the southern Pacific island of Tonga was no small feat. It triggered tsunami waves in the Pacific and choked Tonga in dust. Watch: “Stay away from the coast…”, a volcanic eruption triggers panic Saturday’s eruption was so powerful it was recorded around the world and […]

Hotspot volcanoes

Tonga Tsunami: What Are Underwater Or Submarine Volcanoes And How They Erupt

New Delhi: On Saturday January 15, an explosive eruption of the Hunga Tonga-Hunga Ha’apai volcano occurred, triggering a tsunami in the Pacific Ocean. The Undersea Volcano, also called Undersea Volcano, is located in the South Pacific kingdom of Tonga, an archipelago of more than 170 islands in the South Pacific Ocean 2,000 km northeast of […]

Hotspot volcanoes

The unknown world of underwater volcanoes

ROV Jason studies an underwater hydrothermal vent (NOAA) Posted on Dec 17, 2021 3:53 PM by Brian Gicheru Kinyua Volcanic activity is emblematic of the destructive power of nature. When they occur on land, volcanic eruptions leave a trail of property destruction and loss of life. In 2015, about eight percent of the world’s population […]

Volcanic mountains

Volcanic fertilization of the oceans led to a severe mass extinction

Scientists from the University of Southampton have found that two intense periods of volcanism triggered a period of global cooling and falling oxygen levels in the oceans, which caused one of the most severe mass extinctions in history. the history of the Earth. The researchers, together with colleagues from the University of Oldenburg, the University […]

Volcanic mountains

How volcanic eruptions help feed the world

Solange Duhamel turned her back to the wind as it almost sideways lashed the Icelandic rocky landscape last April. She shielded her face from the hailstones, waiting for the storm to end. Yet Duhamel couldn’t help but gaze in wonder at the scene unfolding in front of her. A stream of glowing lava poured out […]

Volcanic mountains

Could we really have a volcanic eruption in Australia?

Stretching across South East Australia is a “large” and young volcanic region that has the potential for future eruptions, according to a prominent volcanologist. Volcanoes Scientist and Assistant Associate Professor at Monash University, Heather Handley, reported a study, which claims a small amount of magma, or melt, is trapped under the Newer Volcanic Province. This […]

Hotspot volcanoes

Scientific Breakthrough as Chinese Fossil Study Suggests Dinosaur Evolution Was Helped by Volcanoes | Science | News

Dinosaurs: a fossil shows a “different appearance”, according to an expert The ancient beast once roamed the planet freely with little to no opposition other than the other. They lived 230 to 66 million years ago through three periods called the Triassic, Jurassic and Cretaceous. Species as varied as the herbivorous Diplodocus, the terrifying Tyrannosaurus […]

Volcanic mountains

Combine muography with existing technology to improve volcanic eruption forecasting

Credit: Unsplash / CC0 Public domain An international team of researchers proposes that vulcanologists consider using muography with existing technology to improve predictions of volcanic eruptions. In their article published in Proceedings of the Royal Society A, the group describes ways they think muography could be combined with existing technology to provide vulcanologists with more […]

Volcanic mountains

“Volcanic winter” probably contributed to ecological disaster 250 million years ago: study

Minerals rich in copper indicating extensive volcanic activity at the end of the Permian mass extinction in different regions of southern China (A: locality of Taoshujing; B: locality of Lubei; C: Guanbachong; D: locality of Taoshujing; E: Longmendong locality). The minerals are all copper sulfides, mainly malachite – the green spots of the minerals. Credit: […]

Hotspot volcanoes

Identify an eruption “tipping point” in Hot Spot volcanoes

Hotspot volcanoes, those in which magma from mantle plumes reaches the surface, have long been considered clues to mantle mysteries. Spain’s hot volcanoes the Canary Islands, however, are a magmatic mystery in themselves. The magma from these volcanoes can have very different chemical compositions despite being part of the same volcanic system and in some […]

Volcanic mountains

Volcanic eruptions contributed to repeated collapse of ancient Chinese dynasties, new study finds

One or more volcanic eruptions preceded the majority (62 out of 68) of dynastic collapses in China over the past 2,000 years, according to new research by scientists from Zhejiang University and Trinity College Dublin. Tang dynasty mural commemorating General Zhang Yichao’s victory over the Tibetans in 848 CE, from Cave 156 in Mogao. “China’s […]

Volcanic mountains

How an image captures 21 hours of a volcanic eruption

The colors of a volcano can be felt as well as seen. On the Fagradalsfjall volcano in Iceland, about 30 km from the capital, Reykjavík, the hottest lava emits a whitish-yellow but cools to midnight orange, red and eventually black. This “extraordinary dynamic range” is one of many colorful phenomena that the photographer Stephen Wilkes […]

Volcanic mountains

Researchers find repeated link between volcanic eruptions and dynastic collapse in China’s imperial era – sciencedaily

Volcanic eruptions may have triggered abrupt climate change contributing to the repeated collapse of Chinese dynasties over the past 2,000 years, according to a new study released today. [Thursday, 11 November 2021]. The study also illustrates how volcanic eruptions can have a profound impact on vulnerable or unstable regions and highlights the need to prepare […]

Hotspot volcanoes

USGS monitors four U.S. volcanoes showing signs of activity and unrest

The USGS continues to closely monitor volcanoes around the United States, with four now at Orange / Watch elevated due to noted activity on all four of them. The Great Sitkin, Pavlof, Semisopochnoi and Kilauea are the four volcanoes showing signs of trouble. With the exception of Hawaii’s Mauna Loa, which remains yellow / advisory, […]

Volcanic mountains

Black holes give shape to bubbles, rings and filaments of “intergalactic smoke”

The researchers observed for the first time the evolution of hot gas coming from an active black hole: they were able to observe these structures, strongly reminiscent of the smoke flows produced by volcanic eruptions with unprecedented precision and at a scale of hundred million time. year. Credit: University of Bologna An international team of […]

Hotspot volcanoes

Beyond the lava: where are volcanoes erupting and how long can they last? – National

The incandescent lava spurting from the Cumbre Vieja volcano continues to wreak havoc on the Spanish island of La Palma, destroying buildings and forcing massive evacuations. The volcanic eruption of La Palma which began on September 19 is one of more than 50 in the world that are marked as “continuous” as of October 12, […]

Volcanic mountains

Volcanic ash meets the Saharan air layer in a unique display above La Palma

Volcanic ash meets the Saharan air layer in a unique display above La Palma Mother Nature can work in mysterious ways to create a work of art out of something that seems nothing out of the ordinary. In the case of the Cumbre Vieja volcano on the island of La Palma in the Canary Islands, […]

Volcanic mountains

Triassic volcanic eruptions helped dinosaurs take over Earth

the Carnian stage (which spanned 237 to 227 million years) of the Triassic period marks one of the most significant intervals of the past 250 million years. Within two million years, the global biota underwent major changes, with dinosaurs becoming the dominant group on the planet. These events coincide with a remarkable interval of intense […]

Volcanic mountains

Climate change caused by volcanic eruptions laid the groundwork for the rise of dinosaurs | Scientific and technological news

A new study has revealed how the rise of dinosaurs over 230 million years ago coincided with environmental changes brought on by massive volcanic eruptions. Known as the Carnian Rainfall of the Late Triassic (CEP), this interval of enormous climate change has seen temperatures and humidity rise across the globe. Prior to CPE, the climate […]

Hotspot volcanoes

Dinosaur Rise Driven By Volcanoes Causing Climate Change

Ecological changes following intense volcanic activity during the Carnian rainfall event 230 million years ago paved the way for dinosaurs to become the dominant species. Credits: Pixabay The rise of dinosaurs coincided with environmental changes brought on by major volcanic eruptions more than 230 million years ago, a new study finds. The Carnian rainfall event […]

Hotspot volcanoes

Where are most of the volcanoes located?

Volcanoes are found all over the world, forming primarily at the edges of tectonic plates but can also arise in “hot spots” like the one that created the Hawaiian Islands. In total, there are potentially a few 1,500 active volcanoes on Earth according to the US Geological Survey. From these, 51 are now in continuous […]

Volcanic mountains

Image of people relaxing near volcanic eruptions changed

Social media users share an image of people relaxing in a hot spring, while the northern light and volcanic eruptions can be seen in the background. “Only in Iceland can you get this once in a lifetime view,” the caption reads This image was shared on September 10, 2021 by a Facebook user. This image […]

Hotspot volcanoes

In Hawai’i Volcanoes National Park, witness the power of the Earth

Each piece begins with a bird’s-eye view of the history and impact of a unique American site, then zooms in to reveal the experience on the ground. In this article, Hawaii-based writer Catherine Toth Fox explores the fiery magic of Hawai’i Volcanoes National Park. © Michael Parkin, Folio Art 35,000 feet: the beginnings of Hawaii […]

Volcanic mountains

The biggest volcanic eruptions of all time

For hard evidence of nature’s ability to degenerate into catastrophic disaster, look no further than the volcano. These metaphorical portals to hell, which currently number around 1,500 worldwide, not only spew volcanic ash and lava, but can dramatically alter the climate and course of world events. Most are stratovolcanoes, cone-shaped elevations built over time from […]

Volcanic mountains

Volcanic eruptions may have caused the first “puffs” of oxygen in Earth’s atmosphere – ScienceDaily

A new analysis of 2.5 billion-year-old Australian rocks reveals that volcanic eruptions may have stimulated population surges of marine microorganisms, creating the first breaths of oxygen in the atmosphere. This would change the existing stories of Earth’s early atmosphere, which assumed that most changes in the early atmosphere were controlled by geological or chemical processes. […]

Volcanic mountains

Bad astronomy | Volcanic eruption in 1257 AD finally pinned on the Simalas volcano

A titanic volcanic eruption in AD 1257 spat out colossal amounts of ash, sulfur and glassy pumice, and affected the climate over the course of the whole planet. It was one of the biggest, if not the biggest, eruptions of the past 7,000 years, and there’s literally evidence of it from pole to pole. Corn… […]

Hotspot volcanoes

3 volcanoes located along Alaska’s Pacific “ring of fire” are erupting at the same time

Ash-spewing Pavlof volcano in the Aleutian Islands of Alaska. This photo was taken of a different volcanic eruption in March 2016. US Coast Guard / Lieutenant Commander Nahshon Almandmoss / Document via Reuters Three volcanoes erupt at the same time on a remote island chain in Alaska. Two of the volcanoes spew low levels of […]

Volcanic mountains

Volcanic eruptions, ash will cool further due to climate change: study

While the effects of global climate change are fully visible across the globe, scientists believe the climate crisis may also amplify the atmospheric cooling effects of single volcanic eruptions while reducing the impact of smaller eruptions, a researcher revealed on Thursday. new search. Scientists at Cambridge University and the UK Met Office have examined how […]

Hotspot volcanoes

How will climate change affect volcanoes?

British researchers have started to unravel the complex relationship between volcanic eruptions and climate change, showing that the temperature of the atmosphere affects the spread of ash and gases. One of the most massive volcanic eruptions of the 20and century was that of Mount Pinatubo in the Philippines. When it exploded in 1991, it spewed […]

Volcanic mountains

Geomythology looks to ancient stories for clues of scientific truth

Huntington: Everyone loves a good story, especially if it’s based on something true. Consider the Greek legend of Titanomachy, in which the Olympian gods, led by Zeus, defeat the previous generation of immortals, the Titans. As the Greek poet Hesiod said, this conflict is a gripping story – and it can preserve kernels of truth. […]

Volcanic mountains

Dinosaur bones became griffins, volcanic eruptions were godfights – geomythology turns to ancient stories for clues of scientific truth

(THE CONVERSATION) Everyone loves a good story, especially if it’s based on something true. Consider the Greek legend of Titanomachy, in which the Olympian gods, led by Zeus, defeat the previous generation of immortals, the Titans. As the Greek poet Hesiod said, this conflict is a compelling story – and it can preserve kernels of […]

Hotspot volcanoes

Volcanoes in UK’s Favorite Vacation Spots ‘Urgent’ Need for Risk Assessment | Sciences | New

But that might not be the case in the future, especially if global warming and melting ice caps are taken into account. It should be noted that the report’s findings make no predictions about volcanic eruptions or the potential dangers posed by volcanic islands. Instead, the report should provide researchers with more context for the […]

Volcanic mountains

Scientists name the underwater volcanic massif after landmarks featured in the Lord of the Rings trilogy

Sonar image of the “Eye of Sauron” volcano and nearby seamounts on the seabed southwest of … [+] Christmas Island. Phil Vandenbossche & Nelson Kuna / CSIRO Inspired by the description of Mordor, presented in JRR Tolkien’s Lord of the Rings saga as a kingdom of black volcanic plains surrounding the active volcano Mount Doom, […]

Hotspot volcanoes

Strange chemical on Venus may have come from volcanoes, not life

A mysterious smell of unstable chemical in the sky of Venus may not be a sign of life but the result of explosive volcanic eruptions, according to a new study. Last year, scientists reported detecting signs of the molecule phosphine in the clouds of the second rock from the sun. The chemical, made up of […]

Hotspot volcanoes

Why are Indonesian volcanoes so dangerous? • Earth.com

The Indonesian island chain was created by volcanism caused by one of the earth’s plates sliding under another. The Indonesian islands themselves are the peaks of volcanoes rising from the ocean. The magma produced by volcanoes varies widely in composition, depending on the Earth’s mantle where the magma is produced. In Indonesia, the same process […]

Hotspot volcanoes

Earth’s mantle provides new clues to explain Indonesia’s explosive volcanoes

Agung, a volcano in Bali, had an explosive eruption in 2018. Credit: OL Andersen Indonesian volcanoes are among the most dangerous in the world. Why? Through chemical analyzes of tiny minerals in lava from Bali and Java, researchers at Uppsala University and elsewhere have found new clues. They now understand better how the Earth’s mantle […]

Hotspot volcanoes

Why do volcanoes erupt?

According to the traditions of the Australian Gunditjamara people, the mainland’s Budj Bim volcano formed when a giant crouched on the earth for so long that its body became a volcanic mountain and its teeth turned into lava that the volcano spat out. But as the science of geology explains, the 60 to 80 the […]

Hotspot volcanoes

Volcanoes on Mars could be active

Recent explosive volcanic deposit around a fissure in the Cerberus Fossae system. NASA / JPL / MSSS / The Murray Lab Evidence of recent volcanic activity on Mars shows that eruptions may have occurred in the past 50,000 years, according to a new study by researchers at the Lunar and Planetary Laboratory at the University […]

Hotspot volcanoes

Collapsing volcanoes erupt longer and harder

The partially collapsed crater of Kilauea, the most active volcano in the Hawaiian chain, after the … [+] 2018-2019 eruption. Getty Images Scientists have discovered what triggers large-scale volcanic eruptions and the conditions that can lead to them. Hawaii’s Kilauea is one of the most active volcanoes in the world. For this reason and its […]

Hotspot volcanoes

Volcanoes on Mars could be active, increasing the possibility that the planet is recently habitable

Daniel Stolte, University Communications, and Alan Fischer, Planetary Science Institute May 6, 2021 Recent explosive volcanic deposit around a fissure in the Cerberus Fossae system. NASA / JPL / MSSS / The Murray Lab Evidence of recent volcanic activity on Mars shows that eruptions may have occurred in the past 50,000 years, according to a […]

Hotspot volcanoes

Underwater volcanoes release enough energy to power an entire continent

Volcanic eruptions deep in our oceans release powerful blasts of energy at a rate high enough to power an entire CONTINENT, study finds Researchers have created a mathematical model to understand underwater eruptions They were found to be spitting up vast clouds of ash which propelled mega plumes of hot air They are powered by […]

Hotspot volcanoes

From eruptions to sunsets, volcanoes have left their mark on paintings

A new volcanic site in Iceland made headlines this week, with photos and videos allowing everyone to see volcanic activity in Geldingadalur. People have always been fascinated by volcanic activity and have captured it in writings and paintings. These eyewitness accounts are one of the ways we know historical volcanic activity, but the volcanic sky […]

Hotspot volcanoes

Volunteers monitor the volcanoes of the Antilles | Opinion

Erouscilla Joseph is actively working when I contact her via Zoom at the end of February. As Director of the Seismic Research Center (SRC) at the University of the West Indies, she is responsible for a center that currently monitors at least 13 potentially active volcanoes in the region. And one of them is erupting. […]

Hotspot volcanoes

How and why do volcanoes erupt?

This week has seen two major volcanic eruptions, so now is the perfect time to try to understand why these spectacular events are happening. Dr Siobhán Power of Geological Survey of Ireland answers a few questions, but let’s catch up with the news first … Earlier in the week, Etna in Italy exploded. Read the […]

Hotspot volcanoes

Volcanoes Watching: The Five Volcanoes That Could Erupt As Merapi Explodes In A Fiery Eruption | Sciences | New

Indonesia’s most active volcano, Mount Merapi, erupted just two weeks ago, causing a spectacular red river of lava and scorching clouds of gas flowing 9,850 feet (3 km) along. its slopes. Although no casualties were reported, the sounds of the explosive eruption were audible 18 miles (30 km) away – serving as a timely reminder […]

Hotspot volcanoes

Cornish volcanoes that were active hundreds of millions of years ago

You might find it hard to imagine, but Cornwall’s past includes barren deserts, terrifying prehistoric beasts, and volcanoes. Our county was once an active region of volcanism, and lava-spitting volcanic eruptions shaped the local landscape for millions of years to come. Although Britain’s last volcanoes are believed to have erupted around 60 million years ago, […]

Hotspot volcanoes

Eastern Australia has hundreds of enigmatic volcanoes. New research shows how they were formed

The landscape of eastern Australia is dotted with hundreds of extinct volcanoes. They gave birth to an environment to which the Aborigines have been connected for tens of thousands of years, and to the rich soils upon which modern Australia has developed in recent years. a few hundred years. Read more: When the Bullin was […]

Hotspot volcanoes

Why has the east coast had hundreds of volcanoes since the dinosaur era? – ScienceDaily

Australia’s east coast is littered with the remains of hundreds of volcanoes – the most recent only a few thousand years old – and scientists have been unable to explain why so many eruptions occurred in the 1980s. last million years. Today, geoscientists at the University of Sydney have discovered why part of a stable […]

Hotspot volcanoes

Using sound to study underwater volcanoes

NOAA”width =” “height =””/> The Hawaiian-Emperor Seamount Range (the roughly L-shaped configuration near the center of the image) is approximately 3,900 miles long. For comparison, it is the west coast of North America on the right. Credit: NOAA Imagine placing a stone on a piece of hanging cardboard. If the cardboard is sturdy and plentiful, […]

Hotspot volcanoes

Gacad: volcanoes explained – SUNSTAR

THE VOLCANOES are the geological architects of the Earth. They created over 80 percent of our planet’s surface, laying the foundation that allowed life to thrive. Their explosive force makes mountains as well as craters. Rivers of lava spread across dark landscapes. But as time passes, the elements break down these volcanic rocks, releasing nutrients […]

Hotspot volcanoes

Study points to cause for several breathing oxygen mysteries – sciencedaily

Earth’s breathable atmosphere is essential for life, and a new study suggests the first oxygen burst was added by a series of volcanic eruptions caused by tectonics. The study by geoscientists at Rice University offers a new theory to help explain the appearance of significant concentrations of oxygen in the Earth’s atmosphere about 2.5 billion […]

Hotspot volcanoes

10 of the biggest “super volcanoes” – HeritageDaily

A supervolcano is classified as a volcano with an eruption magnitude of 8, the largest Volcanic Explosivity Index (VEI) value where the volume of deposits for that eruption is greater than 1,000 cubic kilometers (240 cubic miles) . Supervolcanoes occur when mantle magma rises in the crust and is unable to break through a fissure […]

Hotspot volcanoes

New model of Earth’s interior reveals clues to hotspot’s volcanoes

Scientists at UC Berkeley have detected previously unknown channels of slow seismic waves in the Earth’s upper mantle, a discovery that helps explain the “hotspot volcanoes” that give rise to island chains such as Hawaii and Tahiti. This 3D view of the first 1,000 kilometers of the Earth’s mantle under the central Pacific shows the […]

Hotspot volcanoes

model of Earth’s interior reveals clues to hotspot volcanoes | Earth

Scientists at the University of California at Berkeley have detected previously unknown channels of slow seismic waves in the Earth’s upper mantle, a discovery that helps explain the “hotspot volcanoes” that give rise to chains of islands like than Hawaii and Tahiti. Unlike volcanoes that emerge from collision zones between tectonic plates, hot spot volcanoes […]