Richard Fortier's dataset contains XYZ coordinates of benchmarks on three degrading lithalsas named AML, BS, and BSO. The benchmarks were leveled annually from 2004 to 2025 to study thaw subsidence of ice-rich permafrost. The data is hosted on the Borealis Harvested Dataverse platform.
Use Cases
- Modeling thaw subsidence rates based on annual benchmark leveling.
- Analyzing permafrost degradation patterns based on XYZ coordinate changes over time.
- Validating remote sensing data of ground displacement based on precise ground-based measurements.
Strengths
- Data collection spans 21 years (2004 to 2025), providing a long-term record.
- Focuses on three specific lithalsa features (AML, BS, BSO) in a defined valley.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- Borealis Harvested Dataverse
- Collection Method
- Annual leveling of ground-based benchmarks.
- Time Range
- 2004 to 2025
- Freshness
- Last updated 2026-05-23 04:11:34; freshness should be verified.
- Geography
- Tasiapik Valley, Umiujaq, Nunavik, Québec, Canada