A quick animation of the instantaneous boundary between seismic waves inside the earth.

Review a video that introduces geologic evidence of unique megathrust earthquakes in the Pacific Northwest based on oral history, radiocarbon dating Tree-ring analysis as well as Samurai records dating back to the beginning of the...

Investigate what GPS can do to help study and predict future earthquakes. [4:12]

A video illustrates the concern scientists have over an inevitable megathrust earthquake due to the stress building between the Juan de Fuca and North American plates. Be sure to look at the additional resources found under the video...

Plate tectonics shift all over Earth. This video illustrates what happened in Pakistan in 2013. [1:59]

A detailed video featuring the challenges of western South America and why it is such a hot spot for earthquakes. [10:16]

Studying the travel paths of seismic waves in the interior of the Earth. Find out what the paths look like and why. [1:31]

A collection of seismic events recorded near Mount Saint Helens. The seismographs located at stations record seismograms like what are shown here. [2:10]

The ShakeAlert technology is presented because it is a system to measure when the impact of an earthquake will hit an area. It sends out a notice to the area so the residents can find protection. Find detailed facts provided by the USGS....

A resource to understand how ShakeAlert helps people know when an earthquake will begin shaking their area. The alert provides people the opportunity to find a safe place. [5:12]

Islands in the south Pacific are recognized for particular features which nurture earthquakes. A video will illustrate tectonic microplates found in the region. [4:09]

2004 and 2012 record two massive earthquakes in the same general geographic area occurred. Find out why the outcomes of both were so different. [4:38]

An introduction to understanding what USArray visualizations provide. Earthquake waves are captured and turned into a graphic video. [2:24]

Learn about the anatomy of a tsunami in this video segment from Nature. Essay, discussion questions, and links to related information included. [1:19]

Actual video footage of the Loma Prieta earthquake in California in 1989 as it was happening. Shows people running for their lives as buildings and the ground shake around them. (Length: 1 min. 2 sec.)

A quick, animated illustration showing a blind thrust fault that does not rupture all the way up to Earth's surface.

A quick animation showing directivity, the directional movement of the seismic energy between two stations.

Animated illustration shows the top and cross-section views of foreshocks that precede an earthquake, the mainshocks, and the aftershocks that follow the quake.

Brief animated illustration demonstrating the movement of a horst and graben fault during an earthquake.

Animated illustration demonstrates a normal fault, which is a dip-slip fault where the rock mass above the fault moves down.

An animation showing the area of the Earth that is not detectable by seismographs, known as the shadow zone.

An animated illustration of a strike-slip fault. It shows the vertical fracture where the blocks of Earth have moved horizontally.

Dangerous rain induced landslides are explained and presented in this weather oriented National Geographic Video. [3:46]

Scientists at Oregon State University study the behavior of tsunamis and how they are formed so they can help people to be better prepared for them. [5:59]