Dictionary:S-reflectivity

The reflection coefficient for S-waves at normal incidence:

$R_{S}={\frac {\rho _{2}V_{S2}-\rho _{1}V_{S1}}{\rho _{2}V_{S2}+\rho _{1}V_{S1}}}$

where $R_{S}$ is the normalized amplitude of an S-wave reflected from the interface between layers 1, 2, $\rho _{1}$, $\rho _{2}$ is the density of layers 1, 2, and V_S1, V_S2 is the S-wave velocity in layers 1, 2.

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