Chapter 3 - From Elastic Waves to Seismic Waves

Abstract

Acoustic waves and elastic waves based on continuum mechanics have been discussed in Chapters 1 and 2Chapter 1Chapter 2, and seismic waves will be discussed in this chapter. Seismic waves are waves propagating in the heterogeneous Earth, while acoustic waves and elastic waves in physics propagate in homogeneous media. Because seismic waves propagate in more complex media, such as the ocean bottom, rocks, and the outer core of the Earth, there are six theoretical problems that must be considered for the development of seismic wave theory from elastic waves.