Big earthquakes appear to follow a brief episode of 'shallow mantle creep' and 'seismic swarms,' suggests new research that offers an explanation for the foreshocks observed prior to large temblors.
Using data from the Cassini spacecraft's final orbits, scientists report new measurements of the gravitational field around Saturn and its rings, which allowed them to constrain its internal structure, the depth of its winds, and the mass and age of its rings.
Nepal was struck by an earthquake with a magnitude of 7.8 in 2015, but the country may still face the threat of much stronger temblor. This is the conclusion reached by ETH researchers based on a new model that simulates physical processes of earthquake rupture between the Eurasian and Indian Plates.
Antarctica experienced a sixfold increase in yearly ice mass loss between 1979 and 2017, according to a study published today in Proceedings of the National Academy of Sciences. Glaciologists from the University of California, Irvine, NASA's Jet Propulsion Laboratory and the Netherlands' Utrecht University additionally found that the accelerated melting caused global sea levels to rise more than half an inch during that time.
Years before the devastating Tohoku earthquake struck the coast of Japan in 2011, the Earth's crust near the site of the quake was starting to stir. Researchers at The University of Texas at Austin are using computer models to investigate if tiny tremors detected near this site could be connected to the disaster itself.
Magma could rise from the upper mantle into the middle and upper crust beneath the Laacher See Volcano (Germany). This is the result of a study conducted by the Seismological Survey of Southwest Germany, together with GFZ German Research Centre for Geosciences, Karlsruhe Institute of Technology (KIT) and the Seismological Survey of North Rhine-Westphalia. The scientists present evidence of deep and low-frequency earthquakes caused by magma movements under the Laacher See Volcano.
Due to a scarcity of data, most global estimates of ocean warming start only in the 1950s. However, a team of scientists at the University of Oxford has now succeeded in reconstructing ocean temperature change from 1871 to 2017.
Looking deeper into the internal behavior of layered solids and formations- from graphene sheets, to wood laminates, to geological formations -- researchers at Drexel University are gaining a better understanding of a buckling phenomenon that occurs within the layers of the materials as they are put under pressure.
The world's largest deposit of iron ore is the Bakchar deposit located in Western Siberia, Russia. Its proven reserves are over 28 billion tons. Scientists search for an answer to a global question: Where from and how was there the accumulation of a huge amount of iron. Researchers propose the origin of the Bakchar ironstone deposit by upward migration of a mixture of Fe-rich brine and hydrothermal fluid through marine sediments.
Researchers used high-powered supercomputing techniques to make a critical discovery about the chemical composition of the Earth's outer core.