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12 June 2018

South Napa Earthquake linked to summer groundwater dip

A summertime expansion in the Earth’s crust caused by changes in groundwater may have triggered the magnitude-6.0 earthquake in California’s wine country in 2014, according to a new study.

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24 May 2018

Subglacial valleys and mountain ranges discovered near South Pole

Extensive ice-penetrating radar data reveal three vast valleys under glaciers in West Antarctica. These valleys could be important in the future as they help to channel the flow of ice from the center of the continent towards the coast.

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17 April 2018

Scientists decipher the magma bodies under Yellowstone

Using supercomputer modeling, scientists have unveiled a new explanation for the geology underlying recent seismic imaging of magma bodies below Yellowstone National Park.

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4 April 2018

Infrasound recordings give scientists a peek inside volcano’s plume

High-resolution recordings of the powerful infrasound waves generated by an eruption at Ecuador’s Tungurahua volcano have given scientists a rare view inside the activity at the volcano’s mouth. The acoustic waves generated by the July 2013 eruption were one of the most powerful volcanic infrasound recordings ever captured. The low-frequency infrasound waves from the eruption are too low for human ears to hear but were as powerful as waves one meter (three feet) away from a jet engine.

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8 February 2018

New Hayward Fault earthquake simulations increase fidelity of ground motions

Scientists have used some of the world’s most powerful supercomputers to model ground shaking for a magnitude (M) 7.0 earthquake on the Hayward Fault and show more realistic motions than ever before.

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15 December 2017

Lava-filled blocks on Venus may indicate geological activity

A global view of some well-known deformation features on Venus’s surface may indicate it’s capable of crustal motion, and that motion might even be happening today, scientists report.

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Subterranean Serendipity: Scientists stumble upon a new way to sample magma

Scientists have never directly observed magma beneath the Earth’s surface. But thanks to the discovery of easily accessible magma chambers, it may now be possible, report scientists at the 2017 American Geophysical Union Fall Meeting in New Orleans.

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11 December 2017

Ancient weakening of Earth’s crust explains unusual intraplate earthquakes

New research reveals that mysterious intraplate seismic zones underwent significant deformation hundreds of millions of years ago.

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6 December 2017

Scientists capture Earth’s “hum” on ocean floor

Researchers have successfully quantified Earth’s vibrational “hum” using seismic instruments on the bottom of the ocean. A new study determined at the ocean bottom the frequencies at which the Earth naturally vibrates, and confirmed the viability of using ocean instruments to study the phenomenon.

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21 November 2017

Moon’s Crust Underwent Resurfacing after Forming from Magma Ocean

A research team took to the lab to recreate the magmatic melt that once formed the lunar surface and uncovered new insights on how the modern moonscape came to be. Their study found found that one of the great mysteries of the lunar body’s formation – how it could develop a crust composed largely of just one mineral – cannot be explained by the initial crust formation and must have been the result of some secondary event.

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