Distributions of degraded and intact lithalsas, North Slave region, Northwest Territories
Bibliographic record
Abstract
The main objective of this report is to provide an inventory of current (intact or degrading) and old (completely degraded) lithalsas in a representative study area of the southern North Slave region between Behchoko and Yellowknife in the Northwest Territories. A lithalsa is an ice-rich mound of permafrost that causes the soil to settle downward and water to pond if the ice core thaws (thermokarst pond). Lithalsas, widespread in this region, are therefore very sensitive to thawing. This inventory should help to better understand current and future permafrost conditions, and is based directly on the GSC's Open File 7255, which provides an inventory of many lithalsas in the region, as well as on the GSC's Open File 8205, which provides an inventory of thermokarst pond development between 1945 and 2005 in the same study area. Using high-resolution satellite images, we completed the inventory of 475 intact lithalsas in the study area. Then, by combining our field observations of surface geomorphology of degrading lithalsas with recognizable geomorphic patterns in the same satellite imagery, we developed criteria to identify and map them and we developed an inventory of 556 completely degraded lithalsas. The inventories and databases are prepared for assessment of the relations between elevation, surface geology and distribution of lithalsas, and the trajectory of thermokarst development in the region. The inventories included with this report can be used directly in a Geographic Information System (GIS).
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".