Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
<!--!introduction!--><b></b> Detailed knowledge about the location and properties of the structures that host the megathrust is required to predict ground motions, model tsunami hazards and better understand subduction zone processes in Cascadia. Here we present our efforts to bring forward a new, detailed slab model based on azimuthally variable receiver functions from almost 300 on-shore 3-component broadband seismic stations.<br><br>We observe a characteristic succession of a negative top-, a positive central- and the positive oceanic Moho-conversion, where either the top or central conversion may be absent. We interpret it as the subducting oceanic crust that is at places overlain by, or contained within, a low-velocity zone. Inverse modeling of synthetic receiver functions allows us to resolve the strike and dip of this structure, the interface depths and seismic velocities of the intervening material along the fore-arc.<br><br>The top conversion exhibits a progressive landward evolution displaying (i) a weak contrast with overriding crust near the coast, (ii) full expression with the development of an upper low-velocity zone downdip, and (iii) disappearance in advance into the fore-arc, where the oceanic crust is inferred to turn to eclogite.<br><br>The thickness of the entire structure frequently exceeds the thickness of the oceanic crust offshore. At depth, the location of the central converter approximately correlates with the location of low-frequency earthquakes. These observations suggest that the subduction megathrust either continues downdip, a few kilometers below the top conversion, or widens into a distributed shear zone that includes upper plate material.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.006 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.003 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.002 |
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