Tidal and wave driven hydrokinetic power in atolls of an amphidromic region in the Pacific Ocean
Bibliographic record
Abstract
French Polynesia is located in an amphidromic area of the Pacific Ocean, a region of low tidal ranges. Atolls, ring-shaped islands with internal lagoons that are common to this region, often show strong currents in channels that connect the lagoon to the ocean. This study shows long-term in-situ flow measurements using acoustic-doppler current profilers that were deployed in the main channels of Manihi and Takaroa, two atolls of French Polynesia, to explore their kinetic energy potential. Despite the lack of significant tidal effects on sea levels, flow measurements show strong currents with a semidiurnal behaviour dominated by the lunar constituent. An asymmetry in the ebb and flood currents is observed and correlation with wave climate indicate that the atolls operate as large wave overtopping devices, increasing the kinetic energy flux through the channel, and extending the ebb flow period. An energetic assessment shows a potential for tidal stream turbines to produce a substantial proportion of the energy demands of Manihi and Takaroa. This energy production would likely have a limited environmental and visual impact, and would allow for a reduction in carbon emissions and reliance on fossil fuels.
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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 | 0.001 | 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".