ÖNCEL AKADEMİ: INTRODUCTION TO GEOPHYSICS
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This document provides an introduction to seismic waves. It discusses how seismic waves are generated by earthquakes and travel through the Earth, similar to how tossing a stone in a pond generates waves. It describes seismic waves as sound energy that is recorded by seismometers and analyzed by seismologists. The key properties of seismic waves like wavelength, period, frequency, amplitude, and speed are introduced.
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ÖNCEL AKADEMİ: INTRODUCTION TO GEOPHYSICS
- 1. Introduction to Geophysics Ali Oncel [email_address] Department of Earth Sciences KFUPM Seismic Waves
- 12. Sometimes we can use the observed frequencies to identify different sources of vibrations. Which has higher frequency content, the sonic boom or the earthquake?
- 13. Elastic Behavior
- 17. Bulk Modulus (Incompressibility) = ( P/ ) … where = dilatation = V/V and P = pressure Elastic Constants: Bulk Modules
- 18. shear stress = ( F /A) = shear stress shear strain shear modulus (rigidity) Elastic Constants: Shear Modules shear strain = ( l /L)
- 21. Particle Motions of Body Waves
- 22. 3D Components of Waves
Editor's Notes
- Elastic behavior occurs at very high strain rates, as particles are vibrated by an earthquake; the vibrations result in the passage of seismic waves Inelastic (ductile) behavior results from very slow straining of the Asthenosphere; viscous flow facilitates the movement of overlying lithospheric plates