Similarity solutions for density currents
Bibliographic record
Abstract
In this thesis, a steady-state hydrodynamic analysis of density currents, or flows of silt-laden sea water adjacent to the bottom of the ocean, is presented. The density current is considered to be analogous to the turbulent free-convection boundary layer encountered in heat transfer. A similarity solution in which the maximum velocity, the depth of flow and the sediment content at the bottom are taken to be proportional to a power of the distance measured along the bottom, is used to solve the integrated form of the momentum equation and a sediment transport equation which is derived in the thesis. The resulting equations from the hydrodynamic analysis are applied to the density current considered to have occurred after the 1929 earthquake in the Grand Banks region off Newfoundland. Values of the sediment content, depth of flow, and predicted velocities corresponding to the observed velocities for this current are obtained. The author has concluded that since the results obtained for the Grand Banks earthquake seem reasonable, the treatment of density currents as turbulent boundary layer flows is justified.
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.006 | 0.001 |
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".