There are three types of seismic waves – P waves, S waves and surface waves. P waves are longitudinal waves, and their relative speed is faster than other waves.

Earthquakes generate three prominent types of seismic waves. The first two, called primary waves and secondary waves, or P and S waves, are detailed in this video segment.

Officials in the community of King Cove, which has about 870 residents and is on the south side of the Alaska Peninsula, sent ...

According to first estimates by geologists, the blast was equivalent to a magnitude 4.5 earthquake, comparable to the energy released by the detonation of 1.000 to 3.000 tons of TNT.

Each year, National Earthquake Information Center locates approximately 20,000 earthquakes around the world. That is about 55 earthquakes per day.By some estimates, there may be even more ...

MOUNT VERNON, Wash. — A 2.9 magnitude earthquake was recorded early Tuesday morning near Mount Vernon. The shakes were recorded around 1:59 a.m. Tuesday about 3 kilometers west of Mount Vernon ...

Strongest earthquake in decades damages central Italy 02:48. LOS ANGELES — A wave of earthquakes has rocked central Italy in recent months, shattering medieval towns and destroying ancient homes ...

Within just 3 minutes, the first tsunami wave would hit the greater Seattle area, according to the simulations. Waves could last more than 3 hours and the department said that they could be as ...