Articles | Volume 11, issue 1
Research article
29 Jan 2020
Research article |  | 29 Jan 2020

The relative contributions of scattering and viscoelasticity to the attenuation of S waves in Earth's mantle

Susini deSilva and Vernon F. Cormier

Data sets

SH component synthetic seismograms S. deSilva and V. F. Cormier

Short summary
Seismic waves attenuate with distance due to two effects: (1) removal of energy by internal friction and (2) redistribution of energy into different distances and time windows by scattering from heterogeneous Earth structure. The relative contribution of these two effects is estimated by synthesizing seismograms having varying amounts of internal friction and heterogeneities. The attenuation of observed S waveforms requires contributions from both internal friction and scattering.