El terremoto (Mw 6.4) superficial del 18 de enero de 2021 del Cordón de las Osamentas, Precordillera Central, San Juan, Argentina
Bibliographic record
Abstract
El 18 de enero de 2021 a las 23:46 h (hora local) se produjo un terremoto superficial destructivo en la Precordillera a unos 52 km al suroeste de la ciudad de San Juan, Argentina. Utilizando 46 estaciones sísmicas se determinan parámetros sísmicos para la fuente (hipocentro: 31.850°S, 68.936°O, profundidad 5.6 km; magnitud Mw 6.4; momento sísmico M0=6.06x1018 Nm; intensidad máxima Mercalli Modificada VII en La Rinconada y Carpintería y; mecanismo focal de rumbo con una pequeña componente inversa). Estos resultados y otros preliminares de más de 940 réplicas (420 con magnitud ML ≥ 2.5 en 30 días) acuerdan con la activación de una estructura en el basamento del terreno Cuyania bajo la Precordillera Central y sin evidencia de ruptura superficial cosísmica.
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.
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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 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) | 0.002 | 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".