This type of flow form of mantle convection, moves heat through Earth’s interior and reshapes how we think about the planet’s ...

ETH Zurich scientists confirmed that solid rock flows deep inside Earth, solving a decades-old mystery about seismic waves.

Deep beneath our feet, around 2,700 kilometers below Earth’s surface, lies a region that has puzzled scientists for over five ...

June 8, 2025 — Beneath Earth s surface, nearly 3,000 kilometers down, lies a mysterious layer where seismic waves speed up inexplicably. For decades, scientists puzzled over this D" layer. Now ...

Shaking from large earthquakes provides hints about something different at the center of the planet. By Kenneth Chang The inner core of the Earth appears to hold an innermost secret. Geology ...

It is hard to measure the stress in-situ, while changes in seismic wave speed can reflect changes in the zone. Hence, temporal variation monitoring of wave speeds has become an important means of ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen ...

Anisotropy is used to describe how seismic waves speed up or slow down through the material of the Earth’s inner core depending on the direction in which they travel. It could be caused by ...

the researchers looked at changes in the propagation speed of seismic waves. The data they used are the “background” seismic vibrations generated by the oceans, winds, and human activity—not ...

Kim explains how the new measurement was made, “The speed at which surface waves propagate depends on their frequency, which in turn depends on their depth.” By measuring changes in velocity in the ...