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Live seismograph of Indian Ocean Earthquake

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Uploaded by on Oct 29, 2006

Live seismograph of Indian Ocean Earthquake that caused the tsunami

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Uploader Comments (jesharpe)

  • It began with a P wave and the big jump is called the S wave. P wave is primary and the S wave is secondary.

  • Hi,

    Thanks for your comment. Although normally there are P waves (Push or Primary Waves) followed by S-waves (Shear or Secondary waves) This earthquake was recorded in the UK and therefore the s-waves were not recorded. This is because they cannot travel through the liquid outer core. The seismograph commentary refers to surface waves that were recorded some 90 minutes after the original p-waves arrived. These continued for some time after the quake, which shows how powerful it is!

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  • I heard a rumor that this was caused by experimentation of some kind, is that true? Or is the only story, the official one that it was natural?

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