This is the third paper in a four‐part sequence that examines the nature of mantle layering
using the multiple‐ScS phases and internal reflections observed within the reverberative …

A new global model of radial variations in intrinsic shear and compressional attenuation, Qμ
(r) and Qκ (r), is presented. The model, called QL6, is derived from recent observations of …

We present a global three‐dimensional model of shear attenuation in the upper mantle,
based on the measurement of amplitudes of low‐frequency (100–300s) Rayleigh waves …

Resolving anelastic attenuation, its spatial and depth variations, can provide important
constraints on the composition and dynamics of the earth. However, measuring Q is difficult …

Seismic waves have long been known to attenuate at a rate greater than that predicted by
geometric spreading of their wave fronts. Knopoff (1964) pointed out more than four decades …

A large data set of fundamental mode Rayleigh wave amplitudes is analyzed to derive a
new global three‐dimensional model of shear wave attenuation in the upper mantle. The …

Seismic velocity and attenuation anomalies in the mantle are commonly interpreted in terms
of temperature variations on the basis of laboratory studies of elastic and anelastic …

Resolving the lateral variations of attenuation in the deep mantle by tomographic methods
holds potential for constraining its thermal structure and dynamics. It is a challenging subject …

Differential waveform analysis provides an excellent tool for studying the attenuation
properties of the top of the inner core. We analyse 108 PKP (BC) versus PKP (DF) …

We analyze several thousand high‐quality, globally recorded SS–S differential waveforms to
constrain the lateral variation of shear wave attenuation (Qβ) in the upper mantle. We use a …