Investigating Ship Induced Scour in a Confined Shipping Channel
Bibliographic record
Abstract
Deep draft ships transiting through confined channels can significantly alter surrounding hydrodynamic conditions. The Burlington Shipping Channel is a confined channel on Lake Ontario which has experienced significant scour due to ship drawdown. A range of investigations including the development of an SGH model of the Burlington Channel have been undertaken to understand the processes leading to scouring near the channel walls. It is proposed the direction of ship motion is fundamental to the depth of scour observed at the entrances to the channel. The SGH model achieved a good level of hydrodynamic calibration and an assessment of modeled scour based on spatial variation in critical sediment size is consistent with observed scour patterns. The critical sediment diameter along the channel is an order of magnitude greater than the native bed material. In the mid-sections of the channel, scour potential is generally independent of direction of ship motion and consecutive ship movements in opposite directions appear to cause minimal net sediment transport. The development of design criteria curves for channel protection using the SGH model is presented.
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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 | 0.000 | 0.000 |
| 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".