Shallow seismic reflection mapping of the Mackenzie Trough, Beaufort Sea, offshore Yukon and Northwest Territories
Bibliographic record
Abstract
The Mackenzie Trough is a unique geological feature of the Canadian Beaufort Sea connecting the Mackenzie River Delta to the continental slope. This study utilizes geoscientific interpretation methods applied to seismic reflection data acquired on the Beaufort Shelf between 2006 and 2017 to map four seismic markers observed within the shallow subsurface of the Mackenzie Trough; i.e. the base of the Mackenzie Trough and three other seismic markers located between the latter and the seafloor. Seismic interpretation has produced four time-structure maps and five time-isopach maps that contribute to the existing geological framework in this sector of the Beaufort Sea. The results suggest that the actual morphology of the Mackenzie Trough is inherited from its base. During the Quaternary, terrigenous sediment supply related to glacier advance and retreat gradually and partially filled the trough. Thicker Quaternary deposits are found within a broad U-shaped erosional cut located in the center of the Mackenzie Trough. Time-isopach maps reveal that zones of thicker sediment accumulations have shifted during the Quaternary, moving landward between the Pliocene and the Holocene.
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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 | 0.002 |
| 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) | 0.001 | 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".