Shore platform and cliff notch transitions along the La Paz Peninsula, southern Baja, Mexico
Why this work is in the frame
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Bibliographic record
Abstract
Increasing exposure to wave action produces a northerly transition from high tidal notches to shore platforms in the andesitic lahar deposits of the La Paz Peninsula, southern Baja, Mexico.Twenty-four notches were surveyed and wear pins were cemented into the apex of each notch.Thirty-six transverse micro-erosion meter (TMEM) stations were installed on three surveyed platforms.Field measurements were made over a 2.5 year period.The wear pins suggested notch backwearing (horizontal erosion) is <2mm yr -1.The shore platforms were fairly narrow (a few tens of metres) and steeper (1) than most platforms in similar microtidal environments, reflecting a weak wave environment and resistant rocks.Mean TMEM downwearing (vertical erosion) rates for each of the three platforms ranged from 0.14mm yr -1 to 0.42mm yr -1 .There was a good relationship between notch height (difference in elevation between the floor and the roof at the front of the notch) and exposure to wave action, but notch depth is time-dependent and the relationship with exposure was not statistically significant.Notch height was also related to the orientation and wave fetch of the site.Field evidence suggested that the notches were not produced by bioerosion or chemical weathering but by alternate wetting and drying or salt weathering from high tidal immersion and wave-generated splash and spray.Coastal morphology is fairly well adjusted to present sea level although notch occurrence in the upper portion of the high tidal zone suggests that there is slow tectonic uplift in this region.Notches.Shore platforms.Erosion rates.
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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 | 0.000 |
| 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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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 it