Continuous seawater isotopic (δ18O, δD, and d-excess) observations from 2021 Arctic cruise on United States Coast Guard Cutter Healy
Bibliographic record
Abstract
The dataset presented here includes isotopic measurements (δ18O, δD, and deuterium excess) of seawater to assess contributions of freshwater and identify different ocean water masses during a 2021 Arctic cruise on board the United States Coast Guard Cutter (USCGC) Healy. The cruise (HLY21TD, HLY2101) began in Seward, Alaska, sailed north around Alaska, through the Northwest Passage and into Baffin Bay, and performed numerous transects of Baffin Bay, the Labrador Sea, and along the Greenland coast. The isotopic measurements are made continuously (29 Aug – 10 Oct) on seawater sampled through the underway along the cruise track. These measurements can be used to identify and quantify sources of freshwater and partition different ocean water masses in order to help better understand changing ocean water composition and circulation.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.004 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.011 | 0.014 |
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".