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 …

Tidal tomography constrains Earth's deep-mantle buoyancy

HCP Lau, JX Mitrovica, JL Davis, J Tromp, HY Yang… - Nature, 2017 - nature.com
Earth's body tide—also known as the solid Earth tide, the displacement of the solid Earth's
surface caused by gravitational forces from the Moon and the Sun—is sensitive to the …

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 …

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 …

Exact free oscillation spectra, splitting functions and the resolvability of Earth's density structure

F Akbarashrafi, D Al-Attar, A Deuss… - Geophysical Journal …, 2018 - academic.oup.com
Seismic free oscillations, or normal modes, provide a convenient tool to calculate low-
frequency seismograms in heterogeneous Earth models. A procedure called 'full mode …

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 …

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 …

Constraints on core–mantle boundary topography from models of thermal and thermochemical convection

F Deschamps, Y Rogister… - Geophysical Journal …, 2018 - academic.oup.com
Mantle flow induces dynamic topography at the core–mantle boundary (CMB), with
distribution and amplitude that depend on details of the flow. To assess whether …

Synthetic free-oscillation spectra: an appraisal of various mode-coupling methods

HY Yang, J Tromp - Geophysical Journal International, 2015 - academic.oup.com
Normal-mode spectra may be used to investigate large-scale elastic and anelastic
heterogeneity throughout the entire Earth. The relevant theory was developed a few …