Mantle plumes and their role in Earth processes

AAP Koppers, TW Becker, MG Jackson… - Nature Reviews Earth & …, 2021 - nature.com
The existence of mantle plumes was first proposed in the 1970s to explain intra-plate,
hotspot volcanism, yet owing to difficulties in resolving mantle upwellings with geophysical …

Achievements and prospects of global broadband seismographic networks after 30 years of continuous geophysical observations

AT Ringler, RE Anthony, RC Aster… - Reviews of …, 2022 - Wiley Online Library
Global seismographic networks (GSNs) emerged during the late nineteenth and early
twentieth centuries, facilitated by seminal international developments in theory, technology …

Subducted oceanic crust as the origin of seismically slow lower-mantle structures

TD Jones, RR Maguire, PE van Keken… - Progress in Earth and …, 2020 - Springer
Mantle tomography reveals the existence of two large low-shear-velocity provinces
(LLSVPs) at the base of the mantle. We examine here the hypothesis that they are piles of …

Heterogeneity of seismic wave velocity in Earth's mantle

J Ritsema, V Lekić - Annual Review of Earth and Planetary …, 2020 - annualreviews.org
Seismology provides important constraints on the structure and dynamics of the deep
mantle. Computational and methodological advances in the past two decades improved …

Spectral-infinite-element simulations of seismic wave propagation in self-gravitating, rotating 3-D Earth models

HN Gharti, W Eaton, J Tromp - Geophysical Journal International, 2023 - academic.oup.com
Although observation of gravity perturbations induced by earthquakes is possible, simulation
of seismic wave propagation in a self-gravitating, rotating Earth model with 3-D …

Evidence for a Kilometer‐Scale Seismically Slow Layer Atop the Core‐Mantle Boundary From Normal Modes

S Russell, JCE Irving, L Jagt… - Geophysical Research …, 2023 - Wiley Online Library
Geodynamic modeling and seismic studies have highlighted the possibility that a thin layer
of low seismic velocities, potentially molten, may sit atop the core‐mantle boundary but has …

Improved resolution across the Global Seismographic Network: A new era in low‐frequency seismology

AT Ringler, RE Anthony, P Davis… - The Seismic …, 2022 - pubs.geoscienceworld.org
Abstract The Global Seismographic Network (GSN)—a global network of≈ 150 very
broadband stations—is used by researchers to study the free oscillations of the Earth (≈ 0.3 …

Toward consistent seismological models of the core–mantle boundary landscape

P Koelemeijer - Mantle convection and surface expressions, 2021 - Wiley Online Library
The dynamic topography of the core‐mantle boundary (CMB) provides important constraints
on dynamic processes in the mantle and core. However, inferences on CMB topography are …

Model order reduction for seismic waveform modelling: inspiration from normal modes

R Hawkins, MH Khalid, K Smetana… - Geophysical Journal …, 2023 - academic.oup.com
The computational cost of full waveform simulation in seismological contexts is known to be
expensive and generally requires large clusters of computers working in parallel. Although …

An analysis of core–mantle boundary Stoneley mode sensitivity and sources of uncertainty

A Robson, HCP Lau, P Koelemeijer… - Geophysical Journal …, 2022 - academic.oup.com
Stoneley modes are a special subset of normal modes whose energy is confined along the
core–mantle boundary (CMB). As such, they offer a unique glimpse into Earth structure at …