Effect of surficial geology on remotely sensed data of bedrock in Northern Canada
Bibliographic record
Abstract
The largely unvegetated northern Melville Peninsula, located north of the Arctic Circle in northeastern Canada, consists mainly of a well exposed granitoid Archean basement complex variably overlain by Pleistocene till deposits. A comparison of a map of surficial geology with an image of Landsat TM channel 7 shows that carbonate rich tills match the white (high reflectance) part of the image. These carbonate tills were carried by glaciers from lowlands to the east of the peninsula. The tills vary in thickness from less than one meter to more than 10 meters and effectively screen out radiation form the underlaying granitoid bedrock. A potassium map, derived from airborne gamma ray spectrometry, can be adequately explained only if the blanketing of the till, which overlies granitic bedrock, is taken into account. Bedrock geology, especially in glaciated regions, cannot be adequately mapped by Landsat and airborne spectrometry unless the nature of the surficial geology is well understood.>
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".