A major Hayward fault quake could shake some Bay Area communities harder than expected because of the ground beneath them, ...

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) ...

On a sunny morning in September 1985, a massive earthquake killed more than 9,000 people in Mexico City, even though the epicenter of the earthquake was some 200 miles away. The worst damage happened ...

A seismic wave is an elastic disturbance that propagates through the Earth or along its surface as a result of sudden stress changes, typically from fault rupture, volcanic activity, or anthropogenic ...

Mantle plumes beneath volcanic hotspots, like Hawaii, Iceland, and the Galapagos, seem to be anchored into a large structure within the core-mantle boundary (CMB). A new study, published in Science ...