The “shadow” from a velocity reversal
- 1 February 1974
- journal article
- Published by Seismological Society of America (SSA) in Bulletin of the Seismological Society of America
- Vol. 64 (1) , 25-32
- https://doi.org/10.1785/bssa0640010025
Abstract
The “shadow” from an Epstein “sech2” profile is caused by exponential decay of amplitude. The decay constant, which is independent of frequency, is identical with that obtained from the classical ray theory. The spectral amplitudes and theoretical seismograms evaluated numerically show the effect of the reversal on the acoustic wave propagation.Keywords
This publication has 10 references indexed in Scilit:
- Seismograms from Epstein Transition ZonesGeophysical Journal International, 1974
- PdP and PKiKP Waves and Diffracted PcP WavesGeophysical Journal International, 1970
- Reflection of acoustic waves from a continuously varying interfacial regionReviews of Geophysics, 1970
- The effect of a velocity gradient at the base of the mantle on diffractedPwaves in the shadowJournal of Geophysical Research, 1969
- Diffraction ofPby the core: A study of long-period amplitudes near the edge of the shadowJournal of Geophysical Research, 1969
- DiffractedP, SV, andSHwaves and their shadow boundary shiftsPublished by American Geophysical Union (AGU) ,1969
- Array measurements ofPvelocities in the upper mantleJournal of Geophysical Research, 1967
- Pwave diffraction theory and the structure of the core-mantle boundaryJournal of Geophysical Research, 1966
- EFFECTS OF A LIQUID CORE ON THE PROPAGATION OF SEISMIC WAVESCanadian Journal of Physics, 1959
- Propagation in a non‐homogeneous atmosphereCommunications on Pure and Applied Mathematics, 1951