CMB/Lowermost Mantle Tomographic Model with Spherical Harmonic Coefficients

Output model from Muir, Tanaka and Tkalčić provides a joint tomographic model of the Earth's core-mantle boundary and lowermost mantle. The dataset includes summary statistics, power spectra, and spatial correlation data for seismic velocity (Vp) and radius perturbations, decomposed into spherical harmonics up to degree 8. It was authored by Jack B. Muir from the University of Oxford and shared via Papers with Code.

Use Cases

• Analyzing correlations between seismic slowness and boundary topography based on the provided correlation matrix.
• Studying the power spectrum of mantle heterogeneity based on the per-degree power files for radius and Vp perturbations.
• Mapping spatial variations in seismic velocity and core-mantle boundary topography using the latitude/longitude summary statistic files.
• Investigating the spherical harmonic structure of deep Earth features using the provided coefficient statistics.

Strengths

• Includes a correlation matrix between slowness and radius perturbation coefficients.
• Provides power per degree statistics with mean, 5th, and 95th percentile values for both radius and Vp perturbations.
• Contains spatial correlation and summary statistic files mapped by latitude and longitude.

Limitations

• Row count and total dataset size are unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred from the file descriptions.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Oxford, Papers with Code

Collection Method

Output from a joint seismic tomographic inversion model.

Geography

Global (Earth's core-mantle boundary and lowermost mantle)