Earthquakes
Stick-slip mechanism
Catastrophic slip occurs at hypocenter
Body wave component I
Body wave component II
Like all waves, seismic waves reflect and refract when they travel from a medium where they have one speed to a medium where they have a different speed
Through reflection & refraction of seismic waves, we ‘see’
Taking larger view, we ‘see’ that Earth is composed of concentric shells of distinctive seismic character
Concentric shell in earth, I
Concentric shell in earth II
Concentric shell in earth III
Concentric shell in deep in earth
Center of the earth
Have two systems for characterizing Earth’s interior
Earthquake locations - where do earthquakes occur?
Compilations of earthquake locations indicate
Email: steven.wojtal@oberlin.edu
Download presentation source