Printed in Great Britain. © 1991 Pergamon Press pie Sedimentation on the Canadian Beaufort Shelf
Bibliographic record
Abstract
Abstract--Modern sediment supply to the Beaufort shelf is dominated by the Mackenzie River which annually provides of the order of 1.25 x 108 tonnes a-1 of mainly fine grained sediment. Minor contributions ofsediment are derived from other ivers, principally along the Yukon coast (1.5 × 106 tonnes a-1) and from erosion of coastal bluffs (5.62 x 106 tonnes a-l). Calculations of the sediment mass that has accumulated in the Mackenzie Delta and on the Beaufort Shelf during the Holocene suggests hat sediment supply from the Mackenzie must have been higher during the earlier Holocene than it is today. Sea-ice covers the Beaufort Shelf rom October to June each year. Ice scouring may be active during the winter, particularly below pressure ridges, but net transport by ice-keels i probably unimportant on the eastern shelf where sedimentation rates are relatively high. Ice scour transport and ice-rafting may be more important on the western shelf where sediment supply is much lower. Discharge and sediment supply from the Mackenzie River are both low during the winter months but rise rapidly in late April and May prior to break-up. A significant proportion of the sediment supply occurs before and during break-up, when open water is minimal. During the open water summer months, a surface plume of brackish water with relatively high concentrations of suspended sediment extends over much of the shelf, east of the delta. The
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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 | 0.003 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.316 | 0.054 |
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".