Seismic scatterers in the mid-lower mantle
S Kaneshima - Physics of the Earth and Planetary Interiors, 2016 - Elsevier
Recent seismological studies have revealed that rocks with significantly different elastic
properties are juxtaposed in the mid-lower mantle and often scatter seismic waves efficiently …
properties are juxtaposed in the mid-lower mantle and often scatter seismic waves efficiently …
Insights into the origins and compositions of mantle plumes: A comparison of Galápagos and Hawai'i
The Galápagos and Hawai'i archipelagos are formed by mantle plumes originating at the
large low shear velocity province (LLSVP) boundary. We report new high‐precision Pb, Sr …
large low shear velocity province (LLSVP) boundary. We report new high‐precision Pb, Sr …
Dynamical links between small-and large-scale mantle heterogeneity: Seismological evidence
Abstract We identify PKP• PKP scattered waves (also known as P′• P′) from earthquakes
recorded at small-aperture seismic arrays at distances less than 65°. P′• P′ energy travels …
recorded at small-aperture seismic arrays at distances less than 65°. P′• P′ energy travels …
[HTML][HTML] Most complicated lock pattern-based seismological signal framework for automated earthquake detection
Background Seismic signals record earthquakes and also noise from different sources. The
influence of noise makes it difficult to interpret seismograph signals correctly. This study …
influence of noise makes it difficult to interpret seismograph signals correctly. This study …
Small‐Scale Scattering Heterogeneities in the Lowermost Mantle From a Global Analysis of PKP Precursors
X Ma, C Thomas - Journal of Geophysical Research: Solid …, 2020 - Wiley Online Library
Small‐scale heterogeneities contain important information on the composition of the Earth's
interior and are vital in understanding the dynamics and evolution of the Earth. Here we …
interior and are vital in understanding the dynamics and evolution of the Earth. Here we …
Improved Characterization of Ultralow‐Velocity Zones Through Advances in Bayesian Inversion of ScP Waveforms
Ultralow‐velocity zones (ULVZs) have been studied using a variety of seismic phases;
however, their physical origin is still poorly understood. Short period ScP waveforms are …
however, their physical origin is still poorly understood. Short period ScP waveforms are …
Sound velocities of the hydrous iron‐rich HH1‐phase: Implications for lower mantle seismic heterogeneities
We investigated the compressional and shear velocities, VP and VS, of the HH1‐phase by
combining the inelastic x‐ray scattering and x‐ray diffraction experiments. In the pressure …
combining the inelastic x‐ray scattering and x‐ray diffraction experiments. In the pressure …
Scattering evidence for an ancient subducted slab using the unique raypath P* PKP
We observe high‐frequency scatterers consistent with the interpretation of a tabular high‐
velocity structure under the Indian Ocean as an ancient subducted slab. We use a previously …
velocity structure under the Indian Ocean as an ancient subducted slab. We use a previously …
Small-scale heterogeneities at the bottom of the lower mantle beneath the northern Bay of Bengal and the northern Gulf of Mexico by the analysis of PKP precursors
The bottom of the lower mantle is a key region for material circulation and energy exchange
within the Earth, with extremely high heterogeneity and complex dynamics processes …
within the Earth, with extremely high heterogeneity and complex dynamics processes …
On the frequency dependence and spatial coherence of PKP precursor amplitudes
N Mancinelli, P Shearer… - Journal of Geophysical …, 2016 - Wiley Online Library
Studies now agree that small‐scale (∼ 10 km) weak (∼ 0.1%) velocity perturbations
throughout the lowermost mantle generate the globally averaged amplitudes of 1 Hz …
throughout the lowermost mantle generate the globally averaged amplitudes of 1 Hz …