Implications of River Discharge Angle and Basin Slope on Mouth Bar Morphology and Discharge Dynamics of Stable Jets
Bibliographic record
Abstract
River mouth bars are strategic morphological units primarily responsible for the development of entire deltaic systems and coastline configuration. Although many works during the last decades analyzed the effects of factors such as tides, wind waves, or sediment properties, the control that some aspects of the geometrical configuration of the river mouth exerts on the sedimentary processes remains unclear. This paper addresses the role of the receiving basin slope and the river discharge angle in the hydrodynamics of an exiting sediment-laden turbulent jet and in the resulting mouth bar morphodynamics using Delft3D. Keeping all other factors constant, we find that when varying the discharge angle and the receiving basin bottom slope, the turbulent jet changes its direction and spreading rate. We also establish a theoretical framework for the specific morphology of the mouth bar as a function of the river discharge angle and basin slope, highlighting their importance for properly designing managing strategies. Finally, predicted mouth bar morphologies are compared with good agreement to river mouths in real locations.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| 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".