Propagation of Tsunami and Seismic Waves

  • Tatsuhiko Saito
Part of the Springer Geophysics book series (SPRINGERGEOPHYS)


Tsunamis and seismic waves are generated by earthquakes. We often reflexively discriminate the waves into tsunami and seismic waves. However, what is the difference between tsunami and seismic waves? What is a tsunami? This is a very simple but meaningful question. This chapter investigates the propagation process of tsunami and seismic waves. Section 3.1 introduces the general mathematics that is commonly used in wave theory. The basic theory involves continuum mechanics. Section 3.2 illustrates how we define tsunami. The fundamental nature of tsunami including the dispersion, particle motion, velocity distribution, and energy flux is theoretically investigated. Section 3.3 contains an investigation of seismic waves based on elastic dynamics. We define P, S, and Rayleigh waves. Also, ocean acoustic waves are classified as seismic wave. In Section 3.4, we summarize the similarities and differences between tsunami and seismic waves.


Tsunami Seismic wave Ocean acoustic wave Equation of motion Constitutive law 


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Copyright information

© Springer Japan KK, part of Springer Nature 2019

Authors and Affiliations

  • Tatsuhiko Saito
    • 1
  1. 1.National Research Institute for Earth Science and Disaster ResilienceTsukubaJapan

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