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28 November 2018

New automated volcano warning system forecasts imminent eruptions

Scientists have developed an automated early warning system for volcanic eruptions, according to a new study. The new system helped government officials warn the public of impending eruptions in Italy and could potentially do the same around the globe, according to the study’s authors. The new research details the new system that monitors volcanic noises and automatically alerts officials if an eruption is imminent. The study’s authors tested this system over a period of eight years on Mount Etna, a volcano on the island of Sicily. Using the new system, the Italian government activated an emergency plan about one hour prior to an eruption for the first time in late 2015.

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2 October 2018

Tracking exploding ice cracks on Himalayan glaciers

In 2017, Evgeny Podolskiy spent more than a week trekking through the Nepalese Himalayas to test the seismic activity of the Trakarding-Trambau Glacier system. In October, the research team and a group of sherpas and porters traveled to an open, debris-free glacier about five kilometers (3.1 miles) above sea level, in full view of Mount Everest.

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17 July 2018

New magnetic anomaly map helps unveil Antarctica

The most comprehensive magnetic map of Antarctica ever produced was published online this week in a new study in Geophysical Research Letters, a journal of the American Geophysical Union.

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10 July 2018

Scientists discover “ghost dunes” on Mars

Scientists have discovered hundreds of crescent-shaped pits on Mars where sand dunes stood billions of years ago. The curves of these ancient dune impressions record the direction of prevailing winds on the Red Planet, providing potential clues to Mars’s past climate, and may hold evidence of ancient life.

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26 June 2018

New study offers new evidence for how the Adirondack Mountains formed

The formation mechanism of the Adirondack Mountains in upstate New York has long posed a geologic mystery. A few mechanisms have been proposed, but until recently tools for evaluating them were not in place. Now, using an advanced seismic imaging method and data available only in the past five years, researchers have constructed a detailed model of the tectonic plate – the crust and the uppermost rigid mantle of the lithosphere under the northeast United States – down to about 62 miles (100 kilometers), in which they discovered a “pillow” of low-density, relatively light rock material. They say a column of this lighter material appears to have squeezed up under the Adirondacks, possibly expanded by heat, to form the dome-shaped mountains.

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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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