DOI: 10.5281/zenodo.8027267
title: Self-consistent Reference Earth Models (SC-REM) Dataset

description: This dataset consists of a collection of self-consistent reference Earth models (SC-REM), which provide detailed information about the radial structure of the Earth. The models are derived by inverting a large set of normal-mode centre-frequencies, quality factors, and geodetic data, including mass, moment of inertia, and tidal response. The SC-REM dataset is accompanied by a research paper titled "Self-consistent models of Earth's mantle and core from long-period seismic and tidal constraints" (DOI: 10.1093/gji/ggad254). The paper presents the methodology and findings related to the development of the models, as well as the implications of the observed seismic and density structure of the Earth. <strong>Dataset Details</strong> The dataset files are provided in comma-separated values (CSV) format, containing the following columns: <strong>Radius (km)</strong>: Radial distance from the center of the Earth. <strong>Depths (km)</strong>: Depth from the surface of the Earth. <strong>Density (g/cm³)</strong>: Radial density structure. <strong>P-wave velocity (vp) (km/s)</strong>: Radial compressional (P) wave velocity structure <strong>S-wave velocity (vs) (km/s)</strong>: Radial shear (S) wave velocity structure. <strong>Qkappa</strong>: Radial bulk attenuation structure. <strong>Qmu</strong>: Radial shear wave attenuation structure. <strong>Bulk Modulus (K) (GPa)</strong>: Radial bulk modulus structure. <strong>Shear Modulus (Mu) (GPa)</strong>: Radial shear modulus structure. <strong>Pressure (GPa)</strong>: Radial pressure profile. <strong>Temperature (K)</strong>: Radial geothermal profile. Additionally, the dataset includes confidence intervals (CIs) for these parameters at 25%, 50%, and 75% levels that are<br> representative of the uncertainty of the sampled model parameters. For example, the files screm-25p-high.dat and screm-25p-low.dat contain the upper and lower bound of the 25% CI sampled model range. A python plotting script is available, which plots the CIs and the best-fitting models. There are two 'best-fitting' models available of which 1. screm-best-modes.dat provides the best fit to the normal-mode data 2. screm-best-tides.dat provides the best fit to the astronomic-geodetic data The individual best-fitting models also include a column for the radial variation in gravity acceleration (m/s²). More models are available upon request to the authors (johannes.kemper@erdw.ethz.ch, amir.khan@erdw.ethz.ch). <strong>Citation</strong> If you use this dataset in your research or refer to the SC-REM models, please cite the following paper: <strong>Title:</strong> Self-consistent models of Earth's mantle and core from long-period seismic and tidal constraints<br> <strong>Authors:</strong> J. Kemper, A. Khan, G. Helffrich, M. van Driel, D. Giardini<br> <strong>Journal:</strong> Geophysical Journal International<br> <strong>Year: </strong>2023<br> <strong>DOI:</strong> 10.1093/gji/ggad254 Please also acknowledge the dataset by providing a link to the Zenodo repository and its DOI. Bibtex: <pre><code>@article{Kemper_etal23, author = {Kemper, J and Khan, A and Helffrich, G and van Driel, M and Giardini, D}, title = "{Self-consistent models of Earth's mantle and core from long-period seismic and tidal constraints}", journal = {Geophysical Journal International}, pages = {ggad254}, year = {2023}, month = {06}, issn = {0956-540X}, doi = {10.1093/gji/ggad254}, url = {https://doi.org/10.1093/gji/ggad254}, } </code></pre>