The core–mantle boundary layer and deep Earth dynamics
Recent seismological work has revealed new structures in the boundary layer between the
Earth's core and mantle that are altering and expanding perspectives of the role this region …
Earth's core and mantle that are altering and expanding perspectives of the role this region …
Geomagnetic polarity transitions
RT Merrill, PL McFadden - Reviews of Geophysics, 1999 - Wiley Online Library
The top of Earth's liquid outer core is nearly 2900 km beneath Earth's surface, so we will
never be able to observe it directly. This hot, dense, molten iron‐rich body is continuously in …
never be able to observe it directly. This hot, dense, molten iron‐rich body is continuously in …
Seismic evidence for partial melt at the base of Earth's mantle
The presence of an intermittent layer at the base of Earth's mantle with a maximum thickness
near 40 kilometers and a compressional wave velocity depressed by∼ 10 percent …
near 40 kilometers and a compressional wave velocity depressed by∼ 10 percent …
Internal structure of ultralow-velocity zones consistent with origin from a basal magma ocean
Seismological observations reveal patches of low-velocity anomalies at the core–mantle
boundary known as ultralow-velocity zones. Despite recent advances, their origin and …
boundary known as ultralow-velocity zones. Despite recent advances, their origin and …
Very low sound velocities in iron‐rich (Mg, Fe) O: Implications for the core‐mantle boundary region
JK Wicks, JM Jackson… - Geophysical Research …, 2010 - Wiley Online Library
The sound velocities of (Mg. 16Fe. 84) O have been measured to 121 GPa at ambient
temperature using nuclear resonant inelastic x‐ray scattering. The effect of electronic …
temperature using nuclear resonant inelastic x‐ray scattering. The effect of electronic …
Heterogeneity of the lowermost mantle
EJ Garnero - Annual Review of Earth and Planetary Sciences, 2000 - annualreviews.org
Strong heterogeneity at a variety of scale lengths has been imaged in the lowermost mantle
using different forward and inverse methods. Coherent patterns in differential travel times of …
using different forward and inverse methods. Coherent patterns in differential travel times of …
Dynamics and evolution of the deep mantle resulting from thermal, chemical, phase and melting effects
PJ Tackley - Earth-Science Reviews, 2012 - Elsevier
The core–mantle boundary (CMB)–the interface between the silicate mantle and liquid iron
alloy outer core–is the most important boundary inside our planet, with processes occurring …
alloy outer core–is the most important boundary inside our planet, with processes occurring …
Ultra-low velocity zones near the core-mantle boundary from broadband PKP precursors
L Wen, DV Helmberger - Science, 1998 - science.org
Short-and long-period precursors of the PKP phase were used to study an ultra-low velocity
zone (ULVZ) near the core-mantle boundary beneath the Western Pacific. Synthetic …
zone (ULVZ) near the core-mantle boundary beneath the Western Pacific. Synthetic …
Detection of molecular hydrogen in the atmosphere of Mars
VA Krasnopolsky, PD Feldman - Science, 2001 - science.org
Four hydrogen (H2) lines have been detected in a spectrum of Mars observed with the Far
Ultraviolet Spectroscopic Explorer. Three of those lines are excited by the solar Lyman β …
Ultraviolet Spectroscopic Explorer. Three of those lines are excited by the solar Lyman β …
Inferences on ultralow‐velocity zone structure from a global analysis of SPdKS waves
Anomalous boundary layer structure at the core‐mantle boundary (CMB) is investigated
using a global set of broadband SKS and SPdKS waves from permanent and portable …
using a global set of broadband SKS and SPdKS waves from permanent and portable …