In a paper published in the journal Nature, geologists from the University of Houston demonstrate the reconstruction of the subduction of the Nazca Ocean plate, the remnants of which are currently found down to 1,500 kilometers, or about 900 miles, below the Earth's surface. Their results show that the formation of the Andean mountain range was more complicated than previous models suggested.
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.
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.
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.
A closer look at small earthquakes that took place at the Oroville Dam in California's Sierra Nevada foothills in February 2017 -- near the time when the dam's spillway failed -- suggest that the seismic activity was related to reservoir discharge that opened and closed fractures in the rock below the spillway.
Machine-learning research published in two related papers today in Nature Geosciences reports the detection of seismic signals accurately predicting the Cascadia fault's slow slippage, a type of failure observed to precede large earthquakes in other subduction zones.
Researchers argue in a new study that a paradigm shift is needed for assessing bridges' tsunami risk.
In the search for life on other planets, scientists traditionally have looked for a world with water. But an Ohio State geophysicist wonders if we should look to rocks instead.
Earthquake hazard assessment often overlooks intra-slab earthquakes. EarthScope Transportable Array data for the 2016 Iniskin and Nov. 30, 2018 Anchorage earthquakes in Alaska offer new insight into potential causes of heavy shaking from these intra-slab events.
Using data gleaned from historical reports, researchers have now identified the sources of some of the most destructive Indonesian earthquakes in Java, Bali and Nusa Tenggara, using these data to independently test how well Indonesia's 2010 and 2017 seismic hazard assessments perform in predicting damaging ground motion.