Advances in mapping lowermost mantle convective flow with seismic anisotropy observations

J Wolf, M Li, MD Long, E Garnero - Reviews of Geophysics, 2024 - Wiley Online Library
Convective flow in the deep mantle controls Earth's dynamic evolution, influences plate
tectonics, and has shaped Earth's current surface features. Present and past convection …

Subducted slabs stagnant above, penetrating through, and trapped below the 660 km discontinuity

Y Fukao, M Obayashi - Journal of Geophysical Research: Solid …, 2013 - Wiley Online Library
A new P wave tomographic model of the mantle was constructed using more than 10 million
travel times. The finite‐frequency effect of seismic rays was taken into account by calculating …

Melting of iron at Earth's inner core boundary based on fast X-ray diffraction

S Anzellini, A Dewaele, M Mezouar, P Loubeyre… - Science, 2013 - science.org
Earth's core is structured in a solid inner core, mainly composed of iron, and a liquid outer
core. The temperature at the inner core boundary is expected to be close to the melting point …

Structure, materials and processes in the Earth's core and mantle

V Dehant, SA Campuzano, A De Santis… - Surveys in …, 2022 - Springer
This paper reviews current knowledge about the Earth's core and the overlying deep mantle
in terms of structure, chemical and mineralogical compositions, physical properties, and …

The chemical composition of the Earth: Enstatite chondrite models

M Javoy, E Kaminski, F Guyot, D Andrault… - Earth and Planetary …, 2010 - Elsevier
We propose a new model of Earth's bulk composition based on enstatite chondrites (E-
chondrites), the only chondrite group isotopically identical to the Earth. This model allows a …

Deep mantle structure as a reference frame for movements in and on the Earth

TH Torsvik, R van der Voo… - Proceedings of the …, 2014 - National Acad Sciences
Earth's residual geoid is dominated by a degree-2 mode, with elevated regions above large
low shear-wave velocity provinces on the core–mantle boundary beneath Africa and the …

Reconciling dynamic and seismic models of Earth's lower mantle: The dominant role of thermal heterogeneity

DR Davies, S Goes, JH Davies, BSA Schuberth… - Earth and Planetary …, 2012 - Elsevier
Two large low-shear-velocity provinces (LLSVPs) in the deep mantle beneath Africa and the
Pacific are generally interpreted as hot but chemically dense 'piles', which have remained …

Joint seismic, geodynamic and mineral physical constraints on three-dimensional mantle heterogeneity: Implications for the relative importance of thermal versus …

NA Simmons, AM Forte, SP Grand - Geophysical Journal …, 2009 - academic.oup.com
The joint interpretation of seismic and geodynamic data requires mineral physical
parameters linking seismic velocity to density perturbations in the Earth's mantle. The most …

Tomographic filtering of high‐resolution mantle circulation models: Can seismic heterogeneity be explained by temperature alone?

BSA Schuberth, HP Bunge… - Geochemistry, Geophysics …, 2009 - Wiley Online Library
High‐resolution mantle circulation models (MCMs) together with thermodynamic
mineralogical models make it possible to construct 3‐D elastic mantle heterogeneity based …

The relationships between large‐scale variations in shear velocity, density, and compressional velocity in the Earth's mantle

P Moulik, G Ekström - Journal of Geophysical Research: Solid …, 2016 - Wiley Online Library
A large data set of surface wave phase anomalies, body wave travel times, normal‐mode
splitting functions, and long‐period waveforms is used to investigate the scaling between …