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On The Theory Of Head Waves, Patrick Heelan
On The Theory Of Head Waves, Patrick Heelan
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When a combined longitudinal and transverse disturbance, diverging from a localized source, strikes a plane boundary between two solid elastic media, several systems of head waves and second order boundary waves are generated, each associated with grazing incidence of one or the other of the reflected or refracted waves. Associated with grazing incidence of P 1 P2, the refracted P-wave, is the head wave system comprising P1P2P1 (the "refracted wave" of seismic prospectors), and P1P2S1 (a transverse head wave) in the upper medium, and P1P2 …