Seismic Waves An introduction

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Seismic Waves

What is an Earthquake?

  • Instrumentally recorded (or felt) ground shaking, normally a result of underground movement on a fault

Types of Seismic Wave

Body Waves

Particle motion of body waves

Surface Waves

    • Form at the free surface
    • Amplitude decays exponentially with depth.

Wave Period and Wavelength 

Other phases

Ray theory

  • Seismic waves can be represented as rays

Propagation of Seismic Waves In the Earth; M. Wysession

Amplitude and Intensity

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