Seismic wavefield imaging of Earth's interior across scales
J Tromp - Nature Reviews Earth & Environment, 2020 - nature.com
Seismic full-waveform inversion (FWI) for imaging Earth's interior was introduced in the late
1970s. Its ultimate goal is to use all of the information in a seismogram to understand the …
1970s. Its ultimate goal is to use all of the information in a seismogram to understand the …
Seismic tomography and the assessment of uncertainty
Seismic tomography is a powerful tool for illuminating Earth structure across a range of
scales, but the usefulness of any image that is generated by this method is dependent on …
scales, but the usefulness of any image that is generated by this method is dependent on …
Global mantle structure from multifrequency tomography using P, PP and P-diffracted waves
In global-scale seismic tomography, teleseismic P and PP waves mainly constrain structures
in the upper two thirds of the mantle, whereas core-diffracted waves (Pdiff) constrain the …
in the upper two thirds of the mantle, whereas core-diffracted waves (Pdiff) constrain the …
WINTERC-G: mapping the upper mantle thermochemical heterogeneity from coupled geophysical–petrological inversion of seismic waveforms, heat flow, surface …
We present a new global thermochemical model of the lithosphere and underlying upper
mantle constrained by state of the art seismic waveform inversion, satellite gravity (geoid …
mantle constrained by state of the art seismic waveform inversion, satellite gravity (geoid …
Viscosity jump in Earth's mid-mantle
The viscosity structure of Earth's deep mantle affects the thermal evolution of Earth, the
ascent of mantle plumes, settling of subducted oceanic lithosphere, and the mixing of …
ascent of mantle plumes, settling of subducted oceanic lithosphere, and the mixing of …
Persistence of strong silica-enriched domains in the Earth's lower mantle
The composition of the lower mantle—comprising 56% of Earth's volume—remains poorly
constrained. Among the major elements, Mg/Si ratios ranging from∼ 0.9–1.1, such as in …
constrained. Among the major elements, Mg/Si ratios ranging from∼ 0.9–1.1, such as in …
Multiscale full waveform inversion
We develop and apply a full waveform inversion method that incorporates seismic data on a
wide range of spatio-temporal scales, thereby constraining the details of both crustal and …
wide range of spatio-temporal scales, thereby constraining the details of both crustal and …
On the relative temperatures of Earth's volcanic hotspots and mid-ocean ridges
Volcanic hotspots are thought to be fed by hot, active upwellings from the deep mantle, with
excess temperatures (T ex)~ 100° to 300° C higher than those of mid-ocean ridges …
excess temperatures (T ex)~ 100° to 300° C higher than those of mid-ocean ridges …
Seismic structure of the European upper mantle based on adjoint tomography
We use adjoint tomography to iteratively determine seismic models of the crust and upper
mantle beneath the European continent and the North Atlantic Ocean. Three-component …
mantle beneath the European continent and the North Atlantic Ocean. Three-component …
Global dynamic topography observations reveal limited influence of large-scale mantle flow
Convective circulation of the Earth's mantle maintains some fraction of surface topography
that varies with space and time. Most predictive models show that this dynamic topography …
that varies with space and time. Most predictive models show that this dynamic topography …