Scientists like me use the seismic waves created by ... we have shown in this study that the low-velocity region is only near the Equator. Earth's outer core has a radius of around 3,480 km ...

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

This state of FeH x exhibits extremely low seismic velocities—34% and ... Superionic iron hydride shapes ultralow-velocity zones at Earth's core–mantle boundary, Proceedings of the National ...

The Earth has ... radius of the core is just over half the radius of the Earth. The core itself consists of a solid inner core and a liquid outer core. There are three types of seismic waves ...

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

The diagrams show what happens when P waves and S waves pass through the Earth. S waves do not pass through the Earth's core S waves cannot ... of the three types of seismic wave.

Although this inner core is white ... the interior of the Earth cannot be studied by drilling holes to take samples. Instead, scientists map the interior by watching how seismic waves from ...