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1 December 2015
Seismic risk in eastern Mediterranean higher than previously estimated
The eastern Mediterranean is more seismically active than previously assumed, a new study finds. On a geological time scale, seismic activity around the island of Crete has generated large earthquakes in bursts, potentially increasing the future risk for earthquakes and tsunamis in the region.
29 October 2015
3D images of magma below Mono Craters
A new conceptual model of the magma system below Mono Lake and Mono Craters in eastern California gives scientists a more detailed understanding of volcanic processes at depth and a better model for forecasting volcanic unrest. The accuracy and high resolution of the new three-dimensional images of the magma chambers and volcanic “plumbing” below Mono Basin give scientists a better understanding of their size, shape and where the next eruption might occur.
14 October 2015
New research shows impacts from comets or asteroids could have created Europa’s chaos terrain
What began as Williams College students requesting a new course on planets and moons nearly 12 years ago has now culminated in a new research paper showing that impactors, such as comets or asteroids, can penetrate the frozen surface of Jupiter’s moon Europa. Since 2004, undergraduate students led by Rónadh Cox, professor of geoscience, have studied the ice-covered surface of Europa, trying to understand the origins of its chaos terrain: areas that look like crustal breaches, with icebergs embedded in frozen slush.
3 September 2015
New research calls for rethinking of New Zealand’s Alpine Fault
New research could prompt a shift in thinking about New Zealand’s Alpine Fault.
7 August 2015
Natural arches hum their health and scientists are listening
Natural arches ring like guitar strings, plucked by seismic energy and the wind. New research shows how those seismic chords can be used to determine whether the arches are in danger of collapsing.
6 August 2015
16th century Italian earthquake changed river’s course
In 1570, a 5.8-magnitude earthquake struck the northern Italian city of Ferrara, causing dozens of deaths, major damage to the city and thousands to flee. At the time, Pope Pius V said God sent the earthquake to punish the city’s duke who had given hospitality to Jews and Marranos who had escaped Spain.
Now, a new study finds that the 16th century earthquake and subsequent aftershocks were the last step in a tectonic process that occurred over thousands of years and changed the course of the Po River. The final rerouting of the river left Ferrara dry by the end of the 16th century, an event depicted in a painting that now hangs in the Vatican Museum.
17 April 2015
Volcanic soundscapes reveal differences in undersea eruptions (+ video)
New research matching different types of underwater volcanic eruptions with their unique sound signatures could help scientists better detect and understand emissions occurring on the seafloor.
13 March 2015
Source to Sink (+ video)
Why are we studying the mountains by drilling into the seafloor?
25 February 2015
Drilling deep
We’re in the Indian Ocean currently drilling the deepest of a six hole transect across the middle of the Bengal submarine fan. The fan covers the bottom of the Bay of Bengal with sediments eroded from the Himalayas. We’ll be devoting almost three weeks of our eight-week International Ocean Discovery Program expedition to drilling at this site. Our target: to reach 1,500 meters (about a mile) depth. Drilling this deep is a major challenge when you are drilling into the seafloor, which just so happens to be more than 3,600 meters (about two miles) below sea level.
But why so deep? And why here?
5 February 2015
Shoving Off
This is the first in a series of dispatches from Lisa Strong, a video producer and education officer aboard the JOIDES Resolution, a scientific ocean drilling ship currently on a two-month research expedition in the Bay of Bengal.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.