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https://www.theguardian.com/world/2011/mar/11/10-most-powerful-earthquakes-history
https://earthquake.usgs.gov/earthquakes/events/alaska1964/1964seismogram.php
https://pubs.usgs.gov/fs/2014/3018/
https://www2.usgs.gov/blogs/features/usgs_top_story/the-1964-great-alaska-earthquake-tsunami/
http://www.u-s-history.com/pages/h2101.html

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Triangulation to find the Alaskan earthquake was done in 2 surrounding towns but was done badly due to the poor network in the area.

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Epicenter- the point on Earth's  surface vertically above the focus of the earthquake.
Hypocenter- the underground focus point of an earthquake.

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Seismic waves are used to locate the epicenter of an earthquake by first identifying the time difference between the P and S waves, the difference is the distance between the epicenter and the seismometer. Then you can draw a circle from that distance around the town. By doing this with various town the over lapping point is the epicenter

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The 'Great Alaskan Earthquake' was a 9.2 on the Richter scale and a IX intensity on the Mercalli Scale.

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The second Surface wave is the Love wave, named for A.E.H Love who worked out the mathematical model for this wave, is the fastest surface wave and moves the ground side to side. Both waves are confined to the surface of the crust hence the name surface wave.

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There are two types of Surface waves. The Rayleigh wave named for Lord Rayleigh who proved this waves existence rolls the ground like an ocean wave. This wave causes the "shake feeling" of an earthquake.

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Destruction all along the Alaskan Coast.

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Destruction all along the Alaskan Coast.

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Last night, March 27, 1964 a 9.2 Richter scale earthquake struck the coast of Alaska. So far over 131 dead have been counted and over 23 billion dollars in destruction has been made. Scientists have theorized that the cause of this tragic disaster is the result of the Pacific plate sub ducting under the North-American plate but research is still being conducted.The earthquake lasted approximately 4.5 minutes with disasters including landslides and tsunamis. The tsunamis caused by the earthquake ripped through the coast of Alaska then a trans-oceanic tsunami hit most of the Pacific coast. Some reports say that the waves were over 100 feet tall. As new information rolls in we can confirm that the epicenter was in Prince William Sound, Alaska about 15.5 miles below surface. This earthquake was very unexpected by everyone, the cities affected had almost no safety precautions, emergency plans, or hazards. We hope that everyone stays safe.
- Islington Post

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Primary, faster, and weaker waves. Push and pull movement. In the Alaskan earthquake the P-waves bent railroad tracks, and triggered landslides

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Secondary slower but more destructive wave. One of the two main elastic body waves because it moves through the body of an object, unlike surface waves.
Moves ground up and down. In the Alaskan earthquake the S-waves triggered the following tsunami, and buildings to fall.

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These are the areas directly affected by the earthquake

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USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards