The earliest scientists first observed the waves that earthquakes produce before they could accurately describe the nature of earthquakes or their fundamental causes, as discussed in Lessons 1–5.

When seismometers around the world showed the earth was vibrating for nine days last September, experts were left puzzled. It ...

Traveling through the interior of the Earth, body waves arrive before the surface waves emitted by an earthquake. These waves are higher frequency than surface waves. P waves are also known as ...

The significant financial perils of drilling an unsuccessful well on dry land are only magnified when the unprofitable well is drilled in several thousand feet of water. Rig costs alone can top ...

To figure out just where that earthquake happened, you need recordings from seismic stations in other places. While earthquake locations are normally done with a computer that can quickly determine ...

Earth’s solid inner core appears to have changed shape in the past 20 years or so, according to seismic wave measurements – but the behaviour of these waves could also be explained by other ...

Amidst the unique landscape of geothermal development in the Tohoku region, subtle seismic activities beneath the Earth's surface present a fascinating challenge for researchers. While earthquake ...

The study of seismic waves provides evidence for the internal structure of the Earth, which cannot be observed directly. P waves are detected on the opposite side of the Earth. Refractions between ...