Seismic waves at interfaces

• Mode conversion for oblique incidence

• Reflection and Transmission coefficients

• Polarity reversals

Characteristics of a seismic shot record

• Record amplitude as function of time

• Typical traveltime curves of recorded waves

• Critical refraction and headwave formation

Horizontal two layer case

• Principle of picking first arrivals

• Derivation of sub-surface mode with the intercept method

Lecture notes Lecture notes