PRELIMINARY RESULTS OF FLOATECO: EXPERIMENTAL STUDY OF PHYSICAL AND BIOLOGICAL PROCESSES MAINTAINING THE FLOATING PELAGIC ECOSYSTEM
Bibliographic record
Abstract
Converging surface currents create in subtropical oceans areas of high-concentration of floating artificial debris (“garbage patches”). This debris can carry marine biota over long distances and provides a substrate for a new type of pelagic ecosystem, in which coastal species can survive and establish. To study the oceanic processes, responsible for the formation of such marine debris accumulation areas, the multi-institutional team of the interdisciplinary project FloatEco deployed in 2018 a set of Lagrangian tools, including nine drifting buoys with drogues attached between 2 and 20 meters and trackers attached to real debris objects. Preliminary analysis of the trajectories showed that after deployment drifters spread consistently with the vertical shear of Ekman currents, sampled by different drifters at different depths. However, after the initial dispersion, drifters remain in a relatively small area, filled with mesoscale and submesoscale eddies, and their highly fractal trajectories (see Figure) reflect strong horizontal eddy mixing without any significant difference between the drifters of different geometry. Two pairs of drifters were trapped for several weeks in cyclonic submesoscale eddies and converged to a distance of only 100 meters. Characteristics of the drifters suggest that the vertical scale of the submesoscale circulations was comparable to the mixed layer depth. High vertical coherence of such eddies may be homogenizing the ocean momentum, stratified by the wind stress. Remarkably, real debris tagged with satellite trackers demonstrated a similar behavior and was wandering in the same area as drifters. Type and size of debris object as well as change with time of the debris geometry, derived from their observed responses to the local wind and from interruptions in satellite transmissions, did not have strong effect on debris residence in the garbage patch. Preliminary results of FloatEco suggest that mesoscale and submesoscale turbulence reduces effects of the wind-induced vertical shear on the horizontal mixing. Physical mechanisms of this reduction is under investigation. Figure Caption. Trajectories of 9 drifters with varying drogue depths, deployed in the eastern North Pacific November 2, 2018. Streamlines in the background are real time currents diagnosed with the SCUD model. Units are cm/s.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 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) | 0.000 | 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 teacher head, 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".