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Volcano, Redoubt, Eruption, Tremor, Magma, Earthquake

Some Volcanoes 'Scream' at Ever-Higher Pitches Until They Blow Their Tops

Swarms of small earthquakes can precede a volcanic eruption, sometimes resulting in "harmonic tremor" resembling sound from some musical instruments. A new analysis shows tremor during a 2009 sequence at Alaska's Redoubt Volcano glided to substantially higher frequencies, then stopped abruptly just before six of the eruptions.

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Volcano, Volcanic Eruptions, mud flows, popocatepetl, Popo

Volcanologist Can Discuss ‘Popo’, the Ash-Spewing Volcano That Has Towns Near Mexico City on Alert

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Scripps Scientists Image Deep Magma beneath Pacific Seafloor Volcano

Since the plate tectonics revolution of the 1960s, scientists have known that new seafloor is created throughout the major ocean basins at linear chains of volcanoes known as mid-ocean ridges. But where exactly does the erupted magma come from?

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Scripps Scientists Discover ‘Lubricant’ for Earth’s Tectonic Plates

Scientists at Scripps Institution of Oceanography at UC San Diego have found a layer of liquefied molten rock in Earth’s mantle that may be acting as a lubricant for the sliding motions of the planet’s massive tectonic plates. The discovery may carry far-reaching implications, from solving basic geological functions of the planet to a better understanding of volcanism and earthquakes.

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Earth, core, Mantle, Crust, piles, thromochemical piles, deep mantle piles, large low shear velocity provinces, LLSVPs, ultra low velocity zones, ULVZs, Plate Tectonics, core-mantle boundary, Earthquakes, Seismology, Geophysics

The Deep Roots of Catastrophe

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A University of Utah seismologist analyzed seismic waves that bombarded Earth’s core, and believes he got a look at the earliest roots of Earth’s most cataclysmic kind of volcanic eruption. But don’t worry. He says it won’t happen for perhaps 200 million years.

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seismic activity, Tectonics, Volcanic Eruptions, Tsunami, Pacific Rim, Kamchatka, Russian Far East

Russian Far East Holds Seismic Hazards That Could Threaten Pacific Basin

Research shows that the Kamchatka Peninsula and Kuril Islands, long shrouded in secrecy by the Soviet government, are a seismic and volcanic hotbed with a potential to trigger tsunamis that pose a risk to the rest of the Pacific Basin.

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Volcanology, monogenetic volcanoes, Volcanoes, Geology, Arizona

The Brief but Violent Life of Monogenetic Volcanoes

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A new University at Buffalo-led study is providing insight into the explosive mechanisms of volcanoes that erupt just once, and then die.

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Volcanic Eruptions, Volcanology, Earth Science, Mining, Diamond mining

Simulating Volcano Eruptions, One Blast at a Time

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A rare large-scale attempt by UB researchers to simulate volcanic eruptions is drawing international attention because it will provide much-needed insight into one of Earth's most powerful and mysterious natural disasters.

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Volcano, volcanic ash, Georgia Institute Of Technology

Traveling Through a Volcano

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Scientists widely believe that volcanic particle size is determined by the initial fragmentation process, when bubbly magma deep in the volcano changes into gas-particle flows. But new Georgia Tech research indicates a more dynamic process where the amount and size of volcanic ash actually depend on what happens afterward, as the particles race toward the surface.

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Geology, Supereruption, Supervolcano, Magma

Super-Eruptions May Have Surprisingly Short Fuses

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Super-eruptions are potentially civilization-ending events and new research suggests that they may have surprisingly short fuses.







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