Abstract
The asymptotic expressions for the piezoelectric surface waves excited by the buried mechanical and electrical point sources are obtained by using the stationary-phase method developed by Lighthill. It is found that the amplitudes of the piezoelectric surface waves propagating in the directions which correspond to the points of zero curvature on the slowness surface are subject to a comparatively small decay at the rate O(r−1/3) with distance, as opposed to a decay of O(r−1/2) for the ordinary surface waves.
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