Q M1D: A 1D model of shear attenuation in the mantle from differential body waves

Clicks: 12
ID: 330178
2026
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Emerging

Ranked #299 of 338 articles by views in geophysical journal international

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 338 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Summary We introduce a new 1D model of shear attenuation in the mantle (QM1D) constructed from measurements of differential attenuation of S and ScS body waves. We build a dataset of over 90,000 measurements of $\delta t^*_{\text{ScS-S}}$ from seismograms with high-quality S and ScS waveforms from deep earthquakes between 20–75° epicentral distance from 1990–2024. To ensure that measurements are robust, we require that values of differential attenuation are similar between the instantaneous frequency matching and waveform matching methods. Using this dataset, we perform a Bayesian inversion to construct 1D profiles of mantle shear quality factor Qμ and its uncertainties. Our dataset has a high sensitivity to the mid-mantle (660–2000 km) corresponding to the turning depths of the S phases, which maps into lower uncertainty in the ensemble distribution at these depths. QM1D suggests that the mantle is more attenuating than PREM on average; but, notably, that there is a strongly attenuating layer around 750 km depth and that there are weakly attenuating layers around 900 km and 2000 km depth. Due to the source-receiver distribution for the phases, our dataset has a sampling bias in the mantle around the edge of the Pacific which may not be representative of the whole mantle. The weakly attenuating zones in the mantle may correspond to a viscosity jump around 900 km depth and a further viscosity jump in the deep mantle around 2000 km depth, whilst the thin strongly attenuating layer may correspond to regions of slab stagnation caused by a potential thin layer of low viscosity beneath the mantle transition zone in the circum-Pacific region.
Reference Key
openalex_W7214714066 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Carl Martin, Sujania Talavera-Soza, Arwen Deuss
Are you one of these authors? Claim your profile
Journal geophysical journal international
Year 2026
DOI
10.1093/gji/ggag397
URL
https://doi.org/10.1093/gji/ggag397
Keywords Keywords not found

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.