Seismic waves at interfaces
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- Mode conversion for oblique incidence
- Reflection and Transmission coefficients
- Polarity reversals

Characteristics of a seismic shot record
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- Record amplitude as function of time
- Typical traveltime curves of recorded waves
- Critical refraction and headwave formation

Horizontal two layer case
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- Principle of picking first arrivals
- Derivation of sub-surface mode with the intercept method

Lecture notes :download:`Lecture notes <../LectureScripts/Lectures_03_and_04.pdf>`