Geophysical Research Letters

Decompression wave caused eruption chain reaction

The 2010 eruption of Iceland's Eyjafjallajökull proceeded through fits and starts. A new analysis by Tarasewicz et al.suggests that a downward propagating decompression wave triggered a cascade of explosive eruptions from ...

Oct 29, 2012
3 / 5 (2) 0

La Nina caused global sea level drop

The 2011 La Niña was so strong that it caused global mean sea level to drop by 5 millimeters (0.2 inches), a new study shows. Since the early 1990s, sea level has been rising by about 3 millimeters (0.1 inches) per year, ...

Oct 29, 2012
4 / 5 (1) 2

Not-so-permanent permafrost

As much as 44 billion tons of nitrogen and 850 billion tons of carbon stored in arctic permafrost, or frozen ground, could be released into the environment as the region begins to thaw over the next century as a result of ...

Oct 29, 2012
4 / 5 (16) 15 | with audio podcast

Why 'singing' sand dunes hum certain notes

What does Elvis Presley have in common with a sand dune? No, it's not that people sometimes spot both in the vicinity of Las Vegas. Instead, some sand dunes, like The King, can sing. And new research looking ...

Oct 25, 2012
4.8 / 5 (5) 1 | with audio podcast

Asteroid's troughs suggest stunted planet

(Phys.org)—Enormous troughs that reach across the asteroid Vesta may actually be stretch marks that hint of a complexity beyond most asteroids. Scientists have been trying to determine the origin of these ...

Sep 26, 2012
4.4 / 5 (5) 7 | with audio podcast