Sedimentary basins – depressions in Earth’s crust caused by tectonic activity – tend to be flat and are favoured places to ...

A representation of the underground imaging used in the study. (Edward Garnero and Mingming Li/Arizona State University) The ...

As oceans waves rise and fall, they apply forces to the sea floor below and generate seismic waves. These seismic waves are so powerful and widespread that they show up as a steady thrum on ...

Blue lines are seismic rays in the outer core, where core-penetrating seismic waves moved through that region faster in 2018 than in 1997. Credit: Ying Zhou Zhou set out to find that evidence. The ...

Scientists have known that seismic waves slow down when passing through ultra-low velocity zones, or ULVZs, but only knew they existed around hotspots that create volcanic island chains. Now, a new ...

Seismic wave dynamics in tectonic systems encompass the generation, propagation and interaction of elastic disturbances within the Earth’s lithosphere and underlying mantle. At their source, rapid ...

Over a thousand miles from the surface, in Earth’s D” layer—right on the edge of the liquid metal outer core—there is a weird acceleration of seismic waves. Experiments recreating the phenomenon in a ...

Seismic waves generated by natural or artificial sources traverse Earth’s interior, their speeds and paths controlled by variations in elastic properties, density and temperature. Compressional (P) ...

For decades, a Tibet seismic mystery pointed to missing rock beneath the plateau. A new study finds heated crust may explain ...

Earthquakes release waves of energy called seismic waves. They travel through the interior and near the surface of the Earth. P-waves, or primary waves, are the fastest moving type of wave and the ...

Understanding what’s inside of a planet is like trying to figure out what’s inside of a gift without unwrapping it. But because we can’t simply tear open a planet, instead, we must rely on secondary ...

In May 1997, a large earthquake shook the Kermadec Islands region in the South Pacific Ocean. A little over 20 years later, in September 2018, a second big earthquake hit the same location, its waves ...