Evidence for local variations in the depth to the 410 km discontinuity beneath Albuquerque, New Mexico
Bibliographic record
Abstract
We stack data from the three‐component broadband seismic stations at Piñon Flat, California (PFO); Ontario, Canada (RSON); and Albuquerque, New Mexico (ANMO) using the velocity spectrum stacking method. By doing so, we estimate the transition zone thickness (TZT) beneath southern California and Ontario to be 236 and 263 km, respectively. Beneath ANMO we‐find a bimodal distribution in our estimates of the TZT. The transition zone west of ANMO appears to be similar in thickness to that beneath PFO (232 km). The transition zone east of ANMO is 253 km, similar to that estimated for RSON. We conclude that surface tectonics across the Rio Grande Rift are closely related to the transition zone structure beneath it and that the rift, which separates the region of active tectonism from the stable High Plains of eastern New Mexico, is also associated with a boundary in transition zone structure. Most of this 20 km change in TZT appears to be due to topography on the 410 km discontinuity. This implies that beneath New Mexico, lateral variations in temperature do not cross the transition zone and that the 410 km discontinuity reflects surface tectonics more closely than does the 660 km discontinuity.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 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) | 0.001 | 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 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".