Hotspot volcanoes

Water content controls depth of magma storage under many volcanoes, study finds

Water content controls depth of magma storage under many volcanoes, study finds A possible key to better eruption predictions overturns conventional theory Water content controls how deep magma is stored beneath active volcanoes, a new study finds. Here, lead author Daniel Rasmussen of Columbia University’s Lamont-Doherty Earth Observatory collects volcanic ash from the Fisher Caldera […]

Hotspot volcanoes

How are underwater volcanoes formed?

Wellington: It’s usually the volcanoes that we can see that grab our attention. But a violent underwater volcanic eruption on the Pacific island of Tonga in mid-January has people staring at volcanoes under the ocean. Two-thirds of all volcanic activity occurs on the high seas,” says Christoph Helo, a volcanologist at the University of Mainz […]

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 […]

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Explosion of ocean life 2 billion years ago helped create Earth’s mountains, study finds

The explosion of ocean life 2 billion years ago helped create Earth’s mountains: large amounts of plankton turned into lubricant after they died, allowing rocks to pile up on top of each other A dramatic increase in oxygen around the world 2.3 billion years ago led to an explosion of marine life like plankton There […]

Hotspot volcanoes

Seismic “telescope” reveals titanic tree-like plume fueling Earth’s volcanoes

About 75% of the world’s volcanoes live along the aptly named Ring of Fire. It’s logic. Squeezing a boundary between tectonic plates, the Ring of Fire is an open seam within the planet. But then there’s Hawaii, a chain of volcanic islands right in the middle of the Pacific Plate, far from any border. What […]

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, […]

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 […]

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Everything you always wanted to know about earthquakes | Blue Mountain Gazette

Why did you feel the Victorian earthquake at home /images/transform/v1/crop/frm/e8uBJxuTc2fGAziDArmhm5/1a8d2242-a94c-4561-87d8-11ad660c410d.png/r4_0_1916_1080_w1200_h678_fmax.jpg The 5.9 earthquake was felt from afar. news, national, 2021-09-22T18: 00: 00 + 10: 00 https://players.brightcove.net/3879528182001/default_default/index.html?videoId=6273663672001 https://players.brightcove.net/3879528182001/default_default/index.html?videoId=6273663672001 You probably didn’t even realize, when you got up this morning, how you don’t know nothing about earthquakes. An earthquake in Victoria, felt as far away as Tasmania […]

Hotspot volcanoes

What are the most dangerous active volcanoes in the world

Nature conceals within it a multitude of events and magnificent formations that never cease to amaze us. One of them are volcanoes, a geological structure through which magma emerges and is divided into lava and gas from inside the Earth. Volcanoes can have many shapes and release different materials. There are also many submarine volcanoes […]

Volcanic mountains

Canary Islands’ volcanic secrets revealed with lava samples

Image credit: Wikipedia Lava samples from the Canary Islands have revealed new truth about the geological makeup of the earth’s crust and may have implications for volcanic eruption early warning systems, according to a new study. Lava samples have revealed new truth about the geological makeup of the earth’s crust and may have implications for […]

Hotspot volcanoes

Secrets of Hot Spot Volcanoes Revealed • Earth.com

New research has yielded results that could potentially lead to the development of volcanic eruption warning systems. Previously, lava from “hotspot” volcanoes was thought to be virgin lava, coming from tens of kilometers deep in the mantle. This is not the case, explains Dr Teresa Ubide, a volcanologist at the University of Queensland. “It’s not […]

Hotspot volcanoes

The secret to the fiery heart of volcanoes gives clue to predict eruptions

Australian researchers have unlocked a secret hidden in the fiery hearts of many volcanoes, which could lead to better detection of when they might erupt. While volcanoes typically form in places on Earth where tectonic plates meet, hot spot volcanoes can form anywhere and are fueled by magma pushed through cracks in the plates by […]

Hotspot volcanoes

the internal “magmatic filter” that causes the eruption of oceanic island volcanoes

The volcanoes we see on the Earth’s surface are just the tip of the iceberg. Below the surface, they are fed by a complex network of conduits and reservoirs that bring molten rock, called magma, back to the surface. When the magma erupts, it can generate lava flows that cool down to become volcanic rocks. […]

Hotspot volcanoes

Venus is younger than Mars, still has active volcanoes like Earth: study

Venus is believed to be younger and emerged much later after the formation of our closest neighbor Mars, said a group of scientists who examined active volcanic sites first. Published in the journal Solar System Research, the conclusion was jointly drawn by a team of scientists from Russia, Spain, Finland, Italy and Spain. Scientists are […]

Volcanic mountains

Volcanic secrets revealed – sciencedaily

Lava samples have revealed new truth about the geological makeup of the earth’s crust and may have implications for volcanic eruption early warning systems, a study led by the University of Queensland has found. UQ vulcanologist Dr Teresa Ubide said it was previously understood that the cooled lava from so-called “hot spot” volcanoes was “virgin” […]

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Kristel Chanard: Trekking and mountain tracking

As a child, Kristel Chanard loved to read books on mountaineering adventures. She often imagined herself going on an expedition through the Himalayas. But at home, in the Parisian suburbs, she was a handyman, like her father, who liked to take things apart to show her daughter how it worked. Chanard spent his first 2 […]

Block mountains

Scientific guide to the mountains | Training, wildlife and higher peaks

How are mountains formed? Most mountains owe their existence to the movement of tectonic plates, large sections of the earth’s crust. Where two tectonic plates converge, they warp and bend, resulting in the most common type: folded mountains. The Himalayas, for example, are the result of the slow collision of the Asian and Indian plates. […]

Hotspot volcanoes

Which islands have the most impressive active volcanoes?

Both islands are known for their active volcanoes and for those who fascinate them, it is a difficult choice to decide which are the best. Iceland and the Hawaiian Islands could not be more contrasted. While the Hawaiian Islands are tropical, Iceland is subarctic. While the natives of the Hawaiian Islands are Polynesians, the Icelanders […]

Hotspot volcanoes

A guide to the most impressive active volcanoes in Europe

You might be surprised to learn that Europe is covered in volcanoes. No need to worry though, the vast majority are extinct or dormant. Dormant volcanoes are technically active but have not erupted for a long time. They are just expected to erupt again at some point in the future. Most volcanoes in Europe are […]

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

Volcanoes in the Solar System Come in Many Varieties, Shapes and Sizes | Canberra weather

news, latest news, There are different types of volcanoes on Earth, from the wide and short shield volcanoes of Hawaii to the craggy, tall, and explosive stratovolcanoes found at the edges of tectonic plates (think of the kind of volcano that destroyed Pompeii). But have you ever considered the types of volcanoes that might exist […]

Hotspot volcanoes

SUNDAY SPACE: Solar System volcanoes come in many varieties, shapes and sizes | Examiner

news, local news, There are different types of volcanoes on Earth. From the wide and short shield volcanoes of Hawaii to the craggy, tall, and explosive stratovolcanoes found at the edges of tectonic plates (think of the kind of volcano that destroyed Pompeii). But have you ever considered the types of volcanoes that might exist […]

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How are mountains formed?

Mountains are landforms that rise above the surrounding terrain, usually thousands of feet high. Some mountains stand on their own; others are part of long chains called mountain ranges. Mountains are formed in one of three ways: Volcanic explosions Tectonic faults that occur when tectonic plates slide over each other Tectonic collisions The height of […]

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 […]

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The main types of mountains – the ups and downs of the Earth

Mountains have always played a central role in human culture, but it is only recently that we have understood how they form and develop. To this day, these magnificent reliefs still hold many secrets. There are several ways to analyze and classify mountains depending on your science discipline. Here we will describe in detail some […]

Hotspot volcanoes

Australia has many ancient volcanoes. But how were they formed?

If you take a trip this summer, you may pass several ancient sentinels of Australia’s volcanic past. Many of them, like the Glass House Mountains, are hard to miss. These ancient volcanic plugs are all that remains of eruptions that occurred around 25 million years ago. They are among hundreds of ancient volcanic remnants that […]

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 […]

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How are mountains formed? – World Atlas

Mountains are formed by movement within the earth’s crust. The crust itself is made up of several large plates, called tectonic plates, which float freely. These huge pieces of the earth’s crust move through molten rock called magma, allowing them to move and collide over time. Even though humans live on the crust, they don’t […]

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, […]

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The Mystery of the Forces Hidden Behind Earth’s Tallest Mountains May Finally Be Solved

It’s a process that can take billions of years, but mountains do grow – and exactly what factors control this growth have been the subject of ongoing debate among scientists. Now, it looks like we may finally have a definitive answer. According to a new study, tectonic forces beneath mountains — rather than weathering and […]

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

How are volcanoes formed? | Facts about volcanoes

The Earth has four main layers. The innermost layer of the Earth is a solid core made of iron. Its outer core is a molten mixture of iron and nickel. These layers are surrounded by the Earth’s mantle, the pasty layer of molten rock that powers Earth’s volcanoes. And finally, the lithosphere consists of the […]

Block mountains

Block mountains archives – universe today

Seeing the size and majesty of the mountains, the ancient humans couldn’t help but feel that they were standing in the presence of something… divine. And in the belief systems of many ancient cultures, it was generally held that mountains were something spiritual – serving either as a home for the gods, or as a […]

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 […]