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Superionic iron hydride shapes ultralow-velocity zones at Earth's core–mantle boundary
Seismological studies have exposed numerous ultralow velocity zones (ULVZs) exhibiting
extraordinary physical attributes at Earth's core–mantle boundary, yet their compositions and …
extraordinary physical attributes at Earth's core–mantle boundary, yet their compositions and …
Extensive iron–water exchange at Earth's core–mantle boundary can explain seismic anomalies
Seismological observations indicate the presence of chemical heterogeneities at the
lowermost mantle, just above the core–mantle boundary (CMB), sparking debate over their …
lowermost mantle, just above the core–mantle boundary (CMB), sparking debate over their …
Subslab ultra low velocity anomaly uncovered by and facilitating the largest deep earthquake
W Chen, S Wei, W Wang - Nature Communications, 2024 - nature.com
It is enigmatic that M8+ earthquakes can take place at depth greater than 600 km inside the
slab, where the PT conditions generally do not favor seismic slip rate (~ m/s) on faults. Here …
slab, where the PT conditions generally do not favor seismic slip rate (~ m/s) on faults. Here …
[HTML][HTML] Detection of a ULVZ in the Central Pacific using high frequency Sdiff postcursors
In recent decades, ultra-low velocity zones (ULVZs)–thin patches of strongly reduced
seismic velocity atop the core-mantle boundary (CMB)–have been inferred from …
seismic velocity atop the core-mantle boundary (CMB)–have been inferred from …
[HTML][HTML] The spatio-temporal evolution of 182W and 142Nd in the Deccan-La Réunion plume
Variations of the short-lived decay products 182 W and 142 Nd that formed approximately
during the first 60 and 500 million years after solar system formation are pivotal in our …
during the first 60 and 500 million years after solar system formation are pivotal in our …
Ultra‐low velocity zones beneath the Southern Hemisphere imaged with double‐array stacking of PcP waveforms
Ultra‐low velocity zones (ULVZs) are anomalous structures, generally associated with
decreased seismic velocity and sometimes an increase in density, that have been detected …
decreased seismic velocity and sometimes an increase in density, that have been detected …
Thermoelastic Properties of Seifertite at High Pressures and Temperatures: Implications for Negative Velocity Discontinuities in the D" Layer
Negative velocity discontinuities are often observed at the base of the D''layer, yet their
formation mechanisms remain elusive. Here, we present the first investigation of …
formation mechanisms remain elusive. Here, we present the first investigation of …
Contribution of tangential CMB-mantle flow between hot mantle plumes and cold downwellings to ULVZ formation and morphology
J **n, H Zhang, Y Shi, F Orellana-Rovirosa… - Authorea …, 2024 - essopenarchive.org
Ultra-low velocity zones (ULVZs) above the core-mantle boundary (CMB) are observed
structures that may be related to the liquid outer-core. As” thin patches” of dramatically low …
structures that may be related to the liquid outer-core. As” thin patches” of dramatically low …