Strong scattering of short‐period seismic waves by the core‐mantle boundary and the P‐diffracted wave
- 1 September 1996
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 23 (18) , 2413-2416
- https://doi.org/10.1029/96gl02225
Abstract
We interpret the long‐tail‐in‐time (up to 3 minutes) decay of short‐period Pdiff as being due to multiple scattering within D″, which, for this purpose, is assumed to be an heterogeneous region with a low velocity zone just next to the core‐mantle boundary. A simple multiple scattering theory, generalized for a two‐dimensional spherical geometry, provides good agreement with observations for values of the scattering and attenuation coefficients (η) of about 10−3 km−1.This publication has 21 references indexed in Scilit:
- Localized boundary layer below the mid‐Pacific velocity anomaly identified from a PcP precursorJournal of Geophysical Research, 1995
- The core‐mantle boundary regionJournal of Geophysical Research, 1995
- Mapping the lowermost mantle using core‐reflected shear wavesJournal of Geophysical Research, 1994
- Multiple Isotropic Scattering Model IncludingP-SConversions For the Seismogram Envelope FormationGeophysical Journal International, 1994
- Inhomogeneities near the core-mantle boundary evidenced from scattered waves: A reviewPure and Applied Geophysics, 1990
- Deep Slabs, Geochemical Heterogeneity, and the Large-Scale Structure of Mantle Convection: Investigation of an Enduring ParadoxAnnual Review of Earth and Planetary Sciences, 1988
- Multiple scattering and energy transfer of seismic waves—Separation of scattering effect from intrinsic attenuation II. Application of the theory to Hindu Kush regionPure and Applied Geophysics, 1988
- Topography of the core–mantle boundary and lateral homogeneity of the liquid coreNature, 1987
- High‐pressure metallization of FeO and implications for the Earth's coreGeophysical Research Letters, 1986
- The Constitution of the Interior of the Earth, as Revealed by EarthquakesQuarterly Journal of the Geological Society, 1906