As the majority of us know, an earthquake is a violent shaking of the earth due to the release of energy stored for a long time.


Earthquakes happen every day without us noticing the majority of them.

You can observe their frequency of occurrence and the amount of historic earthquakes in these tables.



What not everyone is aware of is how the seismic waves produced by an earthquake work.

For this reason we want to share this fantastic animation showing Denali´s earthquake that took place in 2002 (USGS).


P waves are marked in red, S waves are marked in blue and surface waves are marked in yellow.

In this animation, seismic waves travel 100 times faster than in reality.

  • COLA: College, Alaska
  • PFO: Pinyon Flat Observatorio, California
  • SSPA: Standing Stone, Pennsylvania
  • CTAO: Carta Towers, Australia DBIC: Dimbokro, Costa de Marfil
  • LBTB: Lobatse, Botswana

Denali´s earthquake took place in Alaska November 3rd, 2002 reaching a 7.9 magnitude and was one of the biggest recorded in the history of the US.


Fortunately this earthquake caused little structural damage and no deaths.

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