Alaska Surface Wave Dispersion Maps and Stacked Interferograms

Alaska and the Alaska-Aleutian subduction zone surface wave dispersion maps and stacked interferograms. The dataset contains composite Rayleigh wave isotropy and azimuthal anisotropy maps from 8 to 85 seconds, and onshore Love wave isotropy maps from 8 to 80 seconds on a 0.2°×0.1° grid. It was created by Chuanming Liu at the University of Colorado Boulder as supplementary material for a 2022 Journal of Geophysical Research publication.

Use Cases

• Modeling crustal and upper mantle structure based on Rayleigh wave isotropy and anisotropy maps.
• Analyzing azimuthal anisotropy patterns across Alaska and its offshore regions.
• Studying Love wave isotropy for onshore seismic properties.
• Investigating subduction zone dynamics using stacked three-station interferograms.
• Calibrating or validating regional seismic tomography models.

Strengths

• Data covers a specific geographic region (Alaska and the Alaska-Aleutian subduction zone).
• Includes both isotropic and azimuthally anisotropic dispersion measurements.
• Grid resolution is specified as 0.2°×0.1°.
• Period ranges are explicitly stated (8-85s for Rayleigh, 8-80s for Love).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

University of Colorado Boulder

Collection Method

Likely derived from seismic network data processing and inversion.

Geography

Alaska and the Alaska-Aleutian subduction zone