Wave and current measurements in the St.Lawrence Estuary near Gros-Cacouna, Quebec : Implication on sediment transport
Bibliographic record
Abstract
An exhaustive current meter study was conducted last fall (2007) in the St. Lawrence Estuary in the vicinity of Gros-Cacouna, near Ile Rouge and Ile aux Lievres. Five Acoustic Doppler Current Profilers (ADCP) were deployed to monitor current speed (Cs), current direction (Cd), and wave parameters (significant wave height (Hs) and direction of propagation) over a period of twenty (20) days. Four 600 kHz Sentinel Workhorse were deployed in depths ranging from 25 to 45 m, while one 1200 kHz was deployed in the coastal area in a 15 m depth. The survey period was conducted during both neap and spring tide events. The data was analyzed for near bed, mid-depth, and surface currents at each survey sites according to direction of propagation. In general, the current direction pattern observed at all measurements sites showed that currents were mainly oriented towards North North-East and South South-West. These correspond to the tidal current directions known for this part of the estuary which are parallel to the shoreline. Important differences were observed between ebb and flood tides current speeds. The results show that currents velocity may be described using the following vertical distribution with (1) near surface currents (less than 10 m) with current speeds Cs20 m where Cs les 1.0 m/s. Significant wave heights measured during the survey period vary between 0.1 and 1.5 m. The highest waves measured (> 1 m) originate from the western direction. The comparison between current measurements and multibeam sounding surveys collected - registered in the same area earlier in fall shows that important hydraulic dunes can be generated, suggesting suspended bed load as a significant sediment transport pattern in some parts of the Estuary.
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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 | 0.001 |
| 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) | 0.002 | 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".