Historical coastline adjustment at MacVanes Pond Inlet, Eastern Prince Edward Island
Bibliographic record
Abstract
Sea levels are rising throughout the Atlantic Provinces at present and this is expected to continue throughout this century, forcing general coastline retreat and adjustment. In this study, a part of the coastline of eastern Prince Edward Island is examined for changes during historical time (1784–1994) using maps and aerial photography. MacVanes Pond is located between Basin Head Harbour and South Lake, all three of which were once lagoons connected to the same tidal circulation system. Sand barrier retreat has closed the connection to Basin Head Harbour and it is now a separate body of water. Meanwhile, the location of a tidal inlet at MacVanes Pond has been strongly influenced by longshore drift and the inlet has closed, re‐opened to the northeast, and subsequently shifted to the southwest. Human activities in the area have previously been, and will continue to be, affected by sea level rise and transgression. Actuellement, le niveau de la mer s'élève dans la région des provinces de l'Atlantique et l'on prévoit que cette tendance se maintiendra tout au long du présent siècle, ce qui aura pour effet général de faire reculer le littoral et de le modifier. La présente étude examine une partie du littoral est de l'Île‐du‐Prince‐Édouard pour y déceler des changements qui se sont produits dans le temps (1784–1994) à partir de cartes et de photographies aériennes. L'étang MacVanes est situé entre le bassin Head‐Harbour et le lac South, trois plans d'eau qui étaient autrefois des lagunes reliées au même système de marée. Or, une barre de sable a fermé le lion avec le bassin Head‐Harbour, qui est maintenant une masse d'eau distincte. Entre‐temps, l'emplacement d'un goulet de marée à l'étang MacVanes a été grandement influencé par la dérive littorale, au point de se fermer pour se frayer une nouvelle ouverture au nord‐est et par la suite au sud‐ouest. Les activités humaines de cette région ont été affectées, et continueront de l'être, par l'élévation du niveau de la mer et sa transgression.
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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 | 0.000 | 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".