High-resolution sonar profiling of glacial and postglacial sediments in the Ottawa River near L'Orignal, Ontario
Bibliographic record
Abstract
In 1999, a high-resolution sub-bottom sonar survey in the Ottawa River, 5 km west of L'Orignal, Ontario, indicated faulted Champlain Sea sediments. In 2000, detailed grid surveys consisting of 42 line kilometres of single-channel sub-bottom sonar data were conducted to outline the extent of the faulted areas. A rotated block of sediment, 130 m by 200 mand up to 25 mthick, was discovered to have rotated about 15° . Smaller rotated sections, and areas of dif- ferential compaction occur along strike from the large rotated block. Small independently rotated blocks also occur nearby. Faulting and rotation of sediments is attributed to earthquake shaking. Seismic liquefaction of sediment leading to the development of excess pore pressure may have caused an initial failure along a single glide plane, which sub- sequently propagated upward in a curving path, through the overlying layers, to form a spoon-shaped slip plane.
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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 | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 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".