Δs = Δx sin θ
Δs = v ΔtΔt / Δx = sin θ / v = p
p = ray parameter
Plane wavefront and ray parameter
Δt / Δx = p
p = ray parameter
Ray parameter and travel time curve
V1 < V2
Wavefronts at evenly spaced times. Different separation due to different velocities. -> Ray angle changes.
i1
i2
Wavefronts across interface
i1
i2
Reflected and transmitted P and SV waves
Reflected and transmitted SH waves
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