Accession Number : AD0608550

Title :   PROPAGATION OF A COMPRESSIONAL PULSE IN A LAYERED SOLID.

Descriptive Note : Technical note no. 10,

Corporate Author : WEIZMANN INST OF SCIENCE REHOVOTH (ISRAEL)

Personal Author(s) : Pekeris,C. L. ; Alterman,Z. ; Abramovici,F. ; Jarosch,H.

Report Date : 10 OCT 1964

Pagination or Media Count : 41

Abstract : A solution is given for the problem of propagation of a compressional pulse in a solid half-space which is overlain by a solid layer of different properties. The point source is situated at the depth 1/2H, H denoting the thickness of the layer. Theoretical seismograms of the vertical displacement w at the surface are evaluated out to ranges r = 20H. The solution is obtained by the exact ray theory. The displacement due to the source was assumed to have a shape which at large distances reduces to a saw-tooth. The once-reflected waves from the interface, PP and PS, are strongly marked. The Rayleigh wave is already recognizable at r =5H, and is fully developed at r =20H. The method of ray theory is applied far into the region where the normal mode theory converges well. (Author)

Descriptors :   (*SEISMIC WAVES, PROPAGATION), (*MECHANICAL WAVES, PROPAGATION), SEISMOGRAPHS, SOLIDS, POWER SERIES, ISRAEL

Distribution Statement : APPROVED FOR PUBLIC RELEASE