Volcano

Volcano under Antarctic ice may erupt, accelerate melting

Publication: NBC News   Date: November 17, 2013   View Article

A newly discovered volcano rumbling beneath nearly a mile of ice in Antarctica will almost certainly erupt at some point in the future, according to a new study. Such an event could accelerate the flow of ice into the sea and push up the already rising global sea levels.

When the volcano will blow is unknown, “but it is quite likely” to happen, Amanda Lough, a graduate student in seismology at Washington University in St. Louis, Mo., told NBC News.

Hacking the climate could lead to whiter, brighter skies

Publication: msnbc.com   Date: May 31, 2012   View Article

Pumping a steady stream of sunlight-blocking particles into the stratosphere to fight global climate change would leave us with inescapable hazy and white skies such as those found over big cities, according to new research.

“The skies would be whiter/hazier everywhere, including on weekend getaways to the mountains,” study lead author Ben Kravitz of the Carnegie Institution for Science at Stanford University told me in an email today.

How Earth’s infernos affect climate

Publication: msnbc.com   Date: June 10, 2011   View Article

At a glance, images of the forest fire raging in Arizona and the volcano erupting in Chile seem to suggest they are filling the atmosphere with gases and debris that will mess with the global climate, but experts say this week’s events, in isolation, aren’t much to worry about.

The Willow fire in Arizona has charred at least 336,000 acres so far, filling the atmosphere with smoke, soot, and the greenhouse gas carbon dioxide. It joins a string of fires that have raged elsewhere in the U.S., including Texas and Florida.

3-D model mimics volcanic blast

Publication: msnbc.com   Date: June 1, 2011   View Article

A new 3-D model that realistically mimics the 1980 eruption of Mount St. Helens is helping scientists understand the dynamics of such blasts and may help them map potential blast flows at dangerous volcanoes around the world.

The eruption of the volcano in Washington killed 57 people, leveled forests and sent a torrent of mud and debris down rivers that wiped out hundreds of homes and dozens of bridges.

The damage stems from a fast-moving current of superheated gas and hot rock and debris that was blasted out sideways from the volcano, Barry Voight, an emeritus professor of geology at Penn State, explained to me today.

Supervolcano plume sized up

Publication: msnbc.com   Date: April 11, 2011   View Article

The volcanic plume beneath Yellowstone is larger than previously thought, according to a new study that measured the electrical conductivity of the hot and partly molten rock.

The findings say nothing about the chances of another cataclysmic eruption at Yellowstone, but they give scientists another view of the vast and deep reservoir that feeds such eruptions.

Pictures: Giant Undersea Volcano Revealed

Publication: National Geographic News   Date: July 15, 2010   View Article

Captured by high-resolution cameras aboard a robotic submersible, mineral-rich water spews from hydrothermal vents in this June 30 picture of Kawio Barat, a massive undersea volcano off Indonesia.

During the past few weeks, the submerged volcano—one of the world’s largest—was mapped and explored in detail for the first time by a joint Indonesian-U.S. expedition north of the island of Sulawesi.

Mystery Volcano Solves Global Cooling Puzzle

Publication: National Geographic News   Date: December 9, 2009   View Article

A newly detected 19th-century volcanic eruption may solve the mystery of a strangely cool decade in the early 1800s, researchers say—but the location of the volcano itself remains a puzzle.

Scientists have long blamed the 1815 eruption of an Indonesian volcano, Tambora, for a worldwide cold snap the following year—the so-called year without a summer.

© 2008-2010 Collected Writings By John Roach