Buried more than 3,000 miles beneath our feet, Earth’s solid inner core was once thought to be unchanging—locked in place at ...

Explore how North America is changing as its deep cratonic root thins and pieces are dripping into the Earth's mantle.

It’s not much of a stretch to say that Earth’s inner structure, especially the innermost spherical core, has stupefied ...

Scientists have long known that there are LLVPs — one below the Pacific Ocean and the other below Africa. In these regions, seismic waves from earthquakes travel 1% to 3% more slowly than they ...

Seismologists study Earth's deep interior by investigating how much ... between the Earth's core and mantle. And we see that seismic waves slow down there." Earth scientists therefore call these ...

Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust ...

Full Waveform Inversion (FWI) is capable of finely characterizing the velocity structure, anisotropy, viscoelasticity, and attenuation properties of subsurface media, which provides critical ...

Large quakes produce shaking at a variety of frequencies. Some waves can travel hundreds of miles, and are amplified by local geological conditions.

understanding Mars’ formation requires studying its deep interior. The InSight lander, launched in 2018, was designed to ...

For example, S-waves ... the Martian interior. However, Katayama and Akamatsu have interpreted these cracks as potential evidence for water within the Martian subsurface. The seismic data indicate ...