Yukon and northern British Columbia earthquake focal mechanisms estimated from P-wave polarity data. The dataset includes probabilistic inversions for principal stress axes and shape ratio, improving spatial coverage near the Yakutat–North America collision. It was produced by the Government of Yukon and last updated in April 2026.
Use Cases
- Analyze crustal stress regimes based on probabilistic focal mechanism inversions
- Map maximum horizontal compressive stress orientations orthogonal to the Yakutat syntaxis
- Study stress regime changes across the Fairweather–Connector–Totschunda fault system
- Assess potential earthquake hazards in southwestern Yukon and surrounding regions
Strengths
- Focuses on small- and moderate-magnitude earthquakes (M > 2.0)
- Uses a novel, data-driven approach to propagate focal mechanism uncertainty
- Improves spatial coverage of existing earthquake focal mechanisms in a region with historically sparse seismic network coverage
Limitations
- Column-level documentation is absent; field semantics must be inferred after download
- Row count is unknown, which may limit suitability assessment
- Data may reflect geographic bias inherent to the specific study region
Provenance
- Source
- Government of Yukon
- Collection Method
- Estimated from P-wave first-motion polarity data using probabilistic inversion.
- Freshness
- Last updated 2026-04-17 15:45:54.228608; freshness should be verified
- Geography
- Yukon and northern British Columbia, near the Yakutat–North America collision