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New Study Estimates Frequency of Flight-Disrupting Volcanic Eruptions

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Holidaymakers concerned about fresh volcanic eruptions causing flight-disrupting ash clouds across Northern Europe might be reassured by a study setting out the first reliable estimates of their frequency

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Seismology, Plate Tectonics, Madagascar

What's Up with Madagascar?

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The island of Madagascar off the coast of Africa was largely unexplored seismically until recently. The first broadband seismic images of the island help solve a longstanding mystery: why are there volcanoes far from any tectonic boundary?

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Climate Change May Prevent Volcanoes From Cooling the Planet

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New UBC research shows that climate change may impede the cooling effect of volcanic eruptions.

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Geochemistry, Geodynamics, Petrology, Volcanic Eruptions

Researchers Explore Gigantic Volcanic Eruptions That Caused Worldwide Mass Extinctions

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A paper in Nature Communications confirms a major feature in the formation of large igneous provinces — massive worldwide volcanic eruptions that created incredibly high volumes of lava and triggered environmental catastrophes and mass extinctions from 170 to 90 million years ago.

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Earthquake, Earthquakes, Volcano, Volcanoes, Tectonic Plates, Geology, Geophysics

New Technique for Finding Weakness in Earth’s Crust

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Scientists have developed a method to estimate weakness in the Earth’s outer layers which will help explain and predict volcanic activity and earthquakes.

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Ceres

Ceres: The Tiny World Where Volcanoes Erupt Ice

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Ahuna Mons is a volcano that rises 13,000 feet high and spreads 11 miles wide at its base. This would be impressive for a volcano on Earth. But Ahuna Mons stands on Ceres, a dwarf planet less than 600 miles wide that orbits the Sun between Mars and Jupiter. Even stranger, Ahuna Mons isn't built from lava the way terrestrial volcanoes are -- it's built from ice.

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As Hazard Warnings Increase, Experts Urge Better Decisions on Who and When to Warn

Effective warnings are a growing need as expanding global populations confront a wide range of hazards, such as a hurricane, wildfire, toxic chemical spill or any other environmental hazard threatens safety.

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Earth Science, Geography, Geophyscics, Oceanogaphy, Plate Techtonics

New Study Upends a Theory of How Earth's Mantle Flows

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A new study carried out on the floor of Pacific Ocean provides the most detailed view yet of how the earth's mantle flows beneath the ocean's tectonic plates. The findings, published in the journal Nature, appear to upend a common belief that the strongest deformation in the mantle is controlled by large-scale movement of the plates. Instead, the highest resolution imaging yet reveals smaller-scale processes at work that have more powerful effects.

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Volcanology, Geology, Volcanoes, lava, Magma

Geologists Make Their Own Lava to Prep for Explosive Experiments (Video Available)

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The lava-making operation — one of the largest in the world — will provide a rare, close-up view of the interplay between molten rock and water, an interaction that can enhance the explosive potential of volcanoes.

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Scientists Gain Supervolcano Insights From Wyoming Granite

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Geophysical monitoring of the ground above active supervolcanoes shows that it rises and falls as magma moves beneath the surface of the Earth. Silica-rich magmas like those in the Yellowstone region and along the western margin of North and South America can erupt violently and explosively, throwing vast quantities of ash into the air, followed by slower flows of glassy, viscous magma.







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